Page 1 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual Issue Date 2017-07-27 HUAWEI TECHNOLOGIES CO., LTD.
Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
Page 3: About This Document
About This Document Purpose This document describes the NetCol5000-A air cooled in-row precision air conditioner in terms of its product overview, installation, power-on commissioning, operation and maintenance (O&M), and FAQ. It helps readers understand how to use and maintain the NetCol5000-A.
Page 4 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual About This Document Symbol Description Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury.
Page 5: Table Of Contents
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual Contents Contents About This Document ........................ii 1 Safety Precautions ......................... 1 1.1 General Safety ................................1 1.2 Electrical Safety ................................2 1.3 Mechanical Safety ................................ 4 1.4 Operating Safety ................................5 1.5 Others....................................
Page 6 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual Contents 3.6 Install Process ................................40 3.7 Installing Indoor Units ..............................41 3.7.1 Installing the Air Conditioner Cabinet (with Base) ....................41 3.7.2 Installing the Air Conditioner Cabinet (Without Base) .................... 46 3.7.3 (Optional) Installing the Enclosure Frame .......................
Page 7 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual Contents 4.7 Charging the Remaining Refrigerant ........................118 4.8 Startup wizard ................................118 4.9 (Optional) Power-off ..............................126 4.10 Checking After Commissioning ..........................127 5 Operation and Maintenance ....................128 5.1 Routine Maintenance ..............................
Page 8 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual Contents 6.8 Deleting Historical Alarms ............................226 6.9 Deleting Logs................................226 6.10 Exporting Data ................................ 227 6.11 Clearing the Runtime .............................. 228 6.12 Calibrating a Sensor ..............................229 6.13 Calibrating the Screen ............................. 230 6.14 How to Perform Quick Settings ..........................
Page 9: Safety Precautions
1 Safety Precautions Safety Precautions 1.1 General Safety Declaration Huawei shall not take responsibility for any damage caused by any of the following:  Operation under severe environments which are not specified in this document.  Usage under installation and operating environments which are not specified in related international specifications.
Page 10: Electrical Safety
Only trained and qualified personnel are allowed to install, operate, and maintain the equipment.  Only personnel certified or authorized by Huawei are allowed to replace or modify the equipment or components (including software).  Any fault or error that might cause safety problems must be reported immediately to a supervisor.
Page 11 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 1 Safety Precautions  The device is powered by a high-voltage power supply. Direct or indirect contact (through damp or conductive objects) with high-voltage power sources will result in serious injury or death.
Page 12: Mechanical Safety
Metal shavings from drilling may block pipes and cause short circuits in circuit boards if they enter the cabinet.  Only drill with the approval of the customer, contractor, and Huawei.  Remove interior cables before drilling holes into a cabinet.
Page 13: Operating Safety
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 1 Safety Precautions  Move the equipment close to the installation site before unpacking. Unpack the equipment with caution to avoid scratching or bumping it. Unload the equipment from the pallet immediately before installation.
Page 14: Others
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 1 Safety Precautions  Low-temperature component: evaporator. High Rotational Speed High-speed rotating component: fan. 1.5 Others Binding Signal Cables Signal cables must be bound separately from power cables with a spacing of at least 50 mm.
Page 15 Conditioner User Manual 1 Safety Precautions Manual Loss If you lose this manual, contact Huawei technical support to obtain the electronic document or download it from http://www.huawei.com. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 16: Product Description
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description Product Description 2.1 Model Description Figure 2-1 NetCol5000-A model description Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 17: Product Overview
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description 2.2 Product Overview 2.2.1 Appearance Figure 2-2 Dimensions (unit: mm) (1) Cabinet connecting kit (2) Controller panel (3) Door lock (4) Front door (5) Mounting hole...
Page 18: Cooling Components
(7) Signal cable hole (Φ28 mm) on the skylight 2.2.2 Cooling Components The NetCol5000-A mainly consists of a DC variable-frequency compressor, EC fan, evaporator, electronic expansion valve (EEV), oil separator, sight glass, filter dryer, air filter, electric heater (optional), wet film humidifier (optional), condensate pump, check valve, differential pressure switch, and temperature and humidity sensor (T/H sensor).
Page 19 (20) Filter dryer  Compressor − The NetCol5000-A uses a DC variable-frequency compressor that features compact size, light weight, long service life, low noise, easy installation as well as high reliability, stability, and energy efficiency. − The high-precision drive automatically adapts to the system pressure fluctuations.
Page 20 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description − There are ten EC fans in total. The air conditioner will not shut down when a single fan fails. − Fans can be maintained with power-on. You can replace one faulty fan without shutting down the air conditioner.
Page 21: Controller
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description − The wet film humidifier consumes less power, saving more than 95% of energy compared with a traditional electrode humidifier. − Compared with a traditional electrode humidifier, the wet film humidifier has a longer service life and maintenance interval.
Page 22 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description Table 2-2 Indicator and buzzer status description Alarm Status Indicators Buzzer The device is operating properly, or a warning Green Silent alarm occurs. The buzzer keeps buzzing if a major alarm is...
Page 23 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description  The 7-inch display panel with the true-color touchscreen allows you to set parameters for the air conditioner and query its status.  The air conditioner has the following three remote functions.
Page 24: Physical Ports
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description  Password verification is required upon the first startup to ensure the system security. No password verification is required for subsequent startup if the first verification succeeds.
Page 25: Product Specifications
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description Item Specifications Outdoor unit Refrigerant liquid pipe Outer diameter of 5/8 inch (15.88 mm), welding Refrigerant gas pipe Outer diameter of 7/8 inch (22.22 mm), welding...
Page 26 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description Table 2-6 Optional specifications Item NetCol5000-A0 NetCol5000-A0 NetCol5000-A0 NetCol5000-A0 42H413D20020 42H413D20020 42H413D2W12 42H413D2W12 Power 380–415 V AC, 50 Hz or 60 Hz 3Ph+N+PE system Tolerance: –10% to +10% of rated voltage, rated frequency± 3 Hz...
Page 27 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 2 Product Description Operating Specifications temperature Protection level IP20 Installation Floor or ESD floor-mounted mode Pipe and cable Pipes and cables routed from the top or bottom routing 0–4000 m. When the altitude exceeds 1000 m, the power should be Altitude derated.
Page 28: Installation Guide
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Installation Guide 3.1 Installation Precautions Installation Requirements If the actual server total load for each air conditioner is less than 10% of rated cooling capacity or the equipment room is not properly sealed, the humidity in the equipment room may be too high, which is not a product quality issue and should be dealt with by adding a dehumidifier.
Page 29 (RCCB) that is not sensitive to the single-phase DC pulses and transient current pulses. Note: If the requirements are not met, contact Huawei technical support for an optimized solution. Space Requirements ...
Page 30: Installation Preparation
To ensure the optimal operating condition and longest service life, install the NetCol5000-A in strict accordance with requirements. 3.2.1 Tools The following tables list the tools for installing the NetCol5000-A. Add or delete tools as required. Issue 01 (2017-07-27) Huawei Proprietary and Confidential...
Page 31 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Table 3-2 General tools Appearance, specifications, and name Phillips screwdriver Flat-head Socket wrench (18 Adjustable wrench (M4, M6, and M8) screwdriver (M3 and Torque wrench (28...
Page 32 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Table 3-3 Transporting tools Appearance, specifications, and name Electrical pallet Lifting rope (bearing Lever (bearing at Manual pallet truck truck at least 400 kg) least 400 kg)
Page 33 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Table 3-5 Connecting cable tools Appearance, specifications, and name Polyvinyl chloride ESD gloves Insulation gloves Wire stripper (PVC) insulation tape Heat gun Crimping plier Table 3-6 Commissioning tools...
Page 34: Material Preparations
Engineering purchase: This material will not be delivered by Huawei, and customers need to purchase it. 3.2.2.1 (Optional) Refrigerant R410A Do not use low-quality refrigerant. Huawei is not responsible for any damage caused by low-quality refrigerant. Follow these suggestions to choose high-quality refrigerant: Use high-quality brands such as DuPont, Daikin, or Honeywell.
Page 35: Optional) Pipe Assembly
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Temperature Saturation Temperature Saturation Temperat Saturation (° C) Pressure-S (° C) Pressure-S ure (° C) Pressure-S urface urface urface Pressure Pressure Pressure (MPa) (MPa) (MPa) 1.31 2.21...
Page 36 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  Oil trap and inverted trap: Install an oil trap every five to six meters in the vertical direction along the gas pipe and an inverted trap for the inlet and outlet of the outdoor unit to ensure system reliability.
Page 37: Optional) Humidifier Water Inlet Pipe
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.2.2.3 (Optional) Humidifier Water Inlet Pipe Humidifier water inlet pipes are not required by the models without heating or humidification functions. The humidifier water inlet pipe can be connected using a hose or a rigid pipe.
Page 38 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-5 Connecting a drainpipe (1) Connector with inner screw threads: (2) Conversion adapter: BSPT 1/2 inch; BSPP 1/2 inch; delivered with air connected to a rigid pipe with external...
Page 39: Pipe Support
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.2.2.5 Pipe Support Figure 3-7 shows supports for refrigerant pipes and water pipes. The actual appearance of the supports will be different based on onsite situations.
Page 40 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Installati Item Specifications Remarks Scenario supply: 1 PCS Naked crimping terminal, OT, 10 Delivered with the terminal , M6, 60 A, tin plating, naked fittings ring terminal...
Page 41: Installation Layout Principles
22UL1007, black), (2 x T0.5 orange) 3.2.3 Installation Layout Principles Layout principles for installing the NetCol5000-A are as follows:  If the outdoor unit is placed higher than the indoor unit, the vertical distance between them should be less than or equal to 30 m. An oil trap should be installed every 5 m to 6 m in the vertical direction along the gas pipe to ensure system reliability.
Page 42 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  When calculating the height difference, the compressor base is regarded as the baseline for the indoor unit, and the condenser top is regarded as the baseline for the outdoor unit.
Page 43: Unpacking
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-9 Top pipe routing scenario (1) Inverted trap (2) Oil trap (3) Tilted gas pipe (4) Tilted liquid pipe 3.3 Unpacking Procedure Step 1 Inspect the outer packing for signs of damage. If any damage is found, contact the shipping company immediately.
Page 44: Checking The Nitrogen Pressure
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-10 Unpacking Inspect the cabinet exterior for signs of collision or scratches. If any damage is found, contact the shipping company immediately. Step 3 Check the type and quantity of fittings against the packing list. If fittings are missing or inconsistent with those in the packing list, record the information and contact your local Huawei office immediately.
Page 45 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-11 Removing an air filter If the baffle plates cannot be rotated manually, loosen the screws that secure the baffle plates using a Phillips screwdriver until they can be rotated open manually.
Page 46: Removing The Transport Fixing Sheet Metals
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-12 Positions of the needle valves (1) Low-pressure needle (2) Discharge pipe needle (3) Liquid pipe needle valve valve valve ----End 3.5 Removing the Transport Fixing Sheet Metals 3.5.1 Removing the Pallet...
Page 47: Removing The Transport Fasteners From The Compressor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-13 Removing the screws Step 2 Remove the cabinet from the pallet. ----End 3.5.2 Removing the Transport Fasteners from the Compressor Procedure Step 1 Loosen the three bolts on the compressor transport fasteners using a 13# solid wrench.
Page 48: Install Process
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-14 Removing the transport fasteners from the compressor  Do not remove the bolts directly.  Put away the removed transport fasteners so that you can reinstall them if the indoor unit is to be transported again in the container scenario.
Page 49: Installing Indoor Units
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-15 Process for installing an indoor unit 3.7 Installing Indoor Units 3.7.1 Installing the Air Conditioner Cabinet (with Base) Procedure Step 1 (Optional) Make the base.
Page 50 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-16 Base (Unit: mm)  Shock absorption bars (EPDM rubber, 5 mm thick) are need to install between the ground and the base.  1100 mm depth: D1 = 1100 mm, D2 = 980 mm. 1200 mm depth: D1 = 1200 mm, D2 = 1080 mm.
Page 51 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  Making cable holes on the floor is required only when the cables or pipes are routed from the bottom and there is an ESD floor under the air conditioner.
Page 52 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  Do not remove the anchor bolts. Otherwise, rework is required if the cabinet height does not meet requirements.  Anchor bolt adjustment method: Rotate anchor bolts clockwise to raise the cabinet and rotate them counterclockwise to lower the cabinet.
Page 53 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-19 Combining cabinets Step 6 Secure the cabinets using the M12 bolts in the fittings bag. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 54: Installing The Air Conditioner Cabinet (Without Base)
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-20 Securing a cabinet ----End 3.7.2 Installing the Air Conditioner Cabinet (Without Base) Procedure Step 1 Determine the position for installing the cabinet. Mark mounting holes based on the drawings,...
Page 55 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-21 Distances between mounting holes (unit: mm) Step 2 Drill a hole in each mounting hole position using a hammer drill. Step 3 Move the cabinet over its castors to the installation position.
Page 56: Optional) Installing The Enclosure Frame
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-22 Securing a cabinet ----End 3.7.3 (Optional) Installing the Enclosure Frame Procedure Step 1 Open the front door. Remove the power cable of the display screen, FE cable, and the ground cable for the front door.
Page 57 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-23 Installing an enclosure frame The positions of the bolt fixing plate, hinges, and connecting plates vary depending on the cabinet model. Step 5 Secure one top sealing plate to the enclosure frame using four M5 tapping screws.
Page 58: Exhausting Nitrogen
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-24 Installing a top sealing plate Step 6 Install the hinges and connecting plates removed in Step 2 on the corresponding positions on the enclosure frame.
Page 59: Connecting Pipelines
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Procedure Step 1 Remove the bonnet of the low-pressure needle valve shown in Figure 3-25 and connect the pressure gauge leather hose to the needle valve.
Page 60: Connecting The Refrigerant Pipe
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  The thickness of heat insulation cottons should not be less than 9.2 mm.  When purchasing water pipes, ensure that the water pipe with thermal insulation foam warped can go through the ports on the bottom and top boards.
Page 61 7/8 inch (22.22 mm) 3/4 inch (19.05 mm) If the one-way pipe length is longer than 100 m, contact Huawei technical support. To dampen noises generated by the equipment due to vibration, refrigerant pipe supports should be installed as required by Figure 3-26.
Page 62 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-26 Routing the refrigerant pipe Onsite personnel are responsible for preparing the required materials and installing the supports. Bottom Pipe Routing Step 1 Remove the plugs from the bottom refrigerant pipe using a welding torque, as shown in Figure 3-27.
Page 63 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide  Be careful during welding to avoid burning components, such as rubber rings, inside the cabinet.  Use a rubber hose to connect the nitrogen cylinder which connecting the reducing valve and the end of the copper pipe, then fill nitrogen at 0.03–0.05 MPa into the copper pipe to...
Page 64: Connecting The Humidifier Water Inlet Pipe
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-29 Top pipe routing (1) Gas pipe (2) Liquid pipe Step 2 Connect the gas and liquid pipes to the gas and liquid pipes of the outdoor unit respectively.
Page 65 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide threads: G 1/2 inch, delivered with adapter: G 1/2 inch; connected made of PP-R or the water inlet pipe for the air to a rigid pipe with outer screw...
Page 66 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Top Pipe Routing When routing pipes from the top, do not route the pipes over servers. If unavoidable, take measures to protect the servers from being affected by pipe leaks.
Page 67: Connecting The Drainpipe
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.9.3 Connecting the Drainpipe Context The drainpipe can be connected using a hose or a rigid pipe. Figure 3-5 shows how to connect the pipe.The following uses rigid drainpipe routing as an example to describe how to connect drainpipes.
Page 68 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-34 Bottom pipe routing Step 2 Install the water pipe conversion adapter and seal it with sealant, as shown by (2) in Figure 3-34. Step 3 Cut a cross in the rubber ring using a utility knife and route the pipe wrapped with the thermal insulation tube through the hole.
Page 69: Leak Checking
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-35 Top pipe routing Step 2 Route the drainpipe from the top by referring to Step 2–Step 5 of the bottom pipe routing. ----End 3.10 Leak Checking Prerequisites ...
Page 70 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-36 Charging nitrogen to pipes without configuring low-temperature component (1) Nitrogen cylinder (2) Reducing valve (3) Low pressure gauge (4) High pressure gauge (5) Low-pressure needle valve (6) Exhaust pipe needle valve ...
Page 71 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-37 Charging nitrogen to pipes with installing low-temperature component (1) Nitrogen cylinder (2) Reducing valve (3) Pressure gauge 1 (4) Pressure gauge 2 (5) Connection nut...
Page 72: Connecting Cables
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.11 Connecting Cables 3.11.1 Connecting the Power Cable Before connecting cables, remove the top cover of the indoor unit power terminals.  Power cables can be routed from the top or bottom.
Page 73 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-38 Routing cables for the single power supply Step 2 Connect the PE cable to the cabinet ground bar, as shown in Figure 3-38. ----End...
Page 74 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-39 Routing cables for the dual power supplies Step 2 Connect the PE cable to the cabinet ground bar, as shown in Figure 3-39. ----End...
Page 75: Connecting Signal Cables
Figure 3-40. ----End 3.11.2 Connecting Signal Cables Customers can purchase the signal cables from Huawei or prepare their own cables. Before connecting signal cables, take effective ESD measures. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 76: Connecting The Outdoor Unit On/Off Signal Cable
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.11.2.1 Connecting the Outdoor Unit On/Off Signal Cable Context The outdoor unit signal cable can connect to a dry contact or an RS485 port (by default).
Page 77 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-41 Connecting the outdoor unit on/off signal cable (RS485 connection)  (Dry contact connection) Connect one end of the cable to points 1 and 2 on the external signal port X301 and the other end to ports 1 and 2 on the outdoor unit.
Page 78: Connecting The Water Sensor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-42 Connecting the outdoor unit on/off signal cable (dry contact connection) Step 3 Secure the cable to the right post of the cabinet using cable ties.
Page 79: Optional) Installing The Differential Pressure Sensor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Place the sheet metal of the water sensor upwards and its detection board downwards on the ground. Figure 3-43 Connecting a cable to the water sensor ----End 3.11.2.3 (Optional) Installing the Differential Pressure Sensor...
Page 80 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-44 Securing a differential pressure sensor Step 2 Connect a pressure inlet tube to the + mark on the micro differential pressure sensor and route it to the cold aisle through the hole on the top of the cabinet.
Page 81: Teamwork Networking And Monitoring
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide ----End 3.11.3 Teamwork Networking and Monitoring 3.11.3.1 Main Control Module Ports for the teamwork and monitoring network cables are on the main control module at the rear of the air conditioner.
Page 82 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-47 Pin sequence of network cable Step 2 Connect one end of the FE network cable to an FE_2 port in Figure 3-46, and connect the...
Page 83: Connecting The Monitoring Network Cable
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-49 Connecting the CAN teamwork cable ----End 3.11.3.3 Connecting the Monitoring Network Cable Connecting the FE Monitoring Network Cable (SNMP/Modbus-TCP) When the FE teamwork networking is used inside the air conditioners, connect the external monitoring network cable to the FE port on the air conditioner.
Page 84 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Connecting the RS485 Monitoring Network Cable (Modbus-RTU) When the CAN teamwork networking is used inside the air conditioners, connect the external monitoring network cable to the RS485 port on the air conditioner. To use the northbound RS485 monitoring, the communications protocol should be Modbus-TCP.
Page 85: Connecting The T/H Sensor Outside The Cabinet
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-51 Connecting the RS485 monitoring ----End 3.11.4 Connecting the T/H Sensor Outside the Cabinet Context T/H sensors outside the cabinet are configured to detect the temperatures of cold/hot aisles.
Page 86 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Figure 3-52 Cables routed outside the cabinet  The T/H sensors inside the cabinet are secured at the return air side and their IN ports are connected to the main control board.
Page 87 Hot-aisle 5 temp/humid  The default addresses of T/H sensors purchased from Huawei are 1.  Keep the last RS485_R toggle switch at OFF.  After the addresses are set, power on the device. On the display's home screen, choose Settings >...
Page 88: Connections Verification
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide 3.12 Connections Verification After the installation, check the items listed in Table 3-14, Table 3-15, and Table 3-16, and record the check results. Table 3-14 Check items on the indoor unit...
Page 89 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 3 Installation Guide Check Item Expected Result Actual Result □ Passed □ Failed Differential The cable ties on the differential pressure tubes pressure switch are secured. □ Passed □ Failed There is no foreign matter in the differential pressure tubes.
Page 90: Commissioning
Commissioning 4.1 Vacuumizing and Precharging Refrigerant Ensure that no combustion-supporting materials (air or additives) enter the air conditioning system during commissioning. Huawei shall not be liable for any risks and losses thus incurred. 4.1.1 Refrigerant Charge Amount Refrigerant R410A from name brands such as DuPont, Daikin, and Honeywell is recommended.
Page 91: Vacuumizing
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning 4.1.2 Vacuumizing Prerequisites  Before vacuumizing the cooling system, ensure that the refrigerant pipes have passed the air tightness test and do not leak.  Before vacuumizing the cooling system, ensure that all connectors are secured.
Page 92 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning  If a low-temperature component is installed on the outdoor side, connect the pressure gauge and vacuum pump at the low-pressure, discharge pipe, and liquid pipe needle...
Page 93: Precharging Refrigerant
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning If the precision of the pressure gauge is too low to display 60 Pa (absolute pressure), ensure that the pressure gauge pointer stays at the minimum scale while vacuumizing the cooling system. Preserve the pressure for 1 hour, and make sure the displayed pressure does not increase obviously.
Page 94 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-3 Precharging refrigerant into the system without a low-temperature component (1) Refrigerant cylinder (2) Electronic scale (3) Pressure gauge (4) Connection nut (5) Low-pressure needle valve...
Page 95 If the R410A refrigerant is provided by Huawei, put the refrigerant steel vessel upside down when charging in the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant provider whether the steel vessel has a siphon. If the vessel has a siphon, do not put it upside down when charging refrigerant.
Page 96: Preparing For Power-On
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning  Do not move the pipe or steel vessel when charging refrigerant. Otherwise, the value on the electronic scale is influenced.  When charging refrigerant for a cooling system without a low-temperature component, open only the low-pressure gauge valve.
Page 97: Power-On
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Step 6 If teamwork networking is required, verify that the teamwork cable is correctly connected. Step 7 Verify that the cable connections and DIP switch settings of the T/H sensors are correct.
Page 98 To prevent the effect of misoperation on the system, log in as the operator user first before modifying parameters. Confirm with Huawei before modifying parameters that cannot be modified by operator users; otherwise, Huawei will not be liable for any consequences of the unauthorized modification.
Page 99: Home Screen
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-7 Compressor preheating warning If you need to query the remaining preheating time, choose Running > Device Details > Compressor on the home screen. Figure 4-8 Remaining compressor preheating time 4.4 Home Screen...
Page 100 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-9 Home screen Table 4-2 Note for the page Items Note Permission status indicates that you have not logged in to the system. indicates that you have logged in to the system as an operator user.
Page 101: Initial Configuration
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Items Note an alarm is generated. The current critical alarm refers to the current critical alarm and their and their quantity quantity. The current major alarm refers to the current major alarm and their and their quantity quantity.
Page 102 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-10 Common settings Step 2 Set the parameters by referring to Table 4-3. You are not recommended to modify the parameters not listed in Table 4-3.
Page 103 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Parameter Description Configuration Principle recommended Ctrl humid After the T/H control type and Set this parameter as required.40%–60% setpoint at the humidity value under this RH recommended...
Page 104 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Parameter Description Configuration Principle set point. Dehumid The dehumidification can be Enable indicates that the set to Enable, Disable, or dehumidification function will be Enabled when active pwr...
Page 105: Temperature And Humidity Values
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning 4.5.2 Temperature and Humidity Values Procedure Step 1 On the home screen, choose Settings > System Settings > T/H Sensor. Figure 4-11 displayed. Figure 4-11 Setting temperature and humidity values...
Page 106: Optional) Setting The Pressure Difference Control
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Parameter Description Configuration Principle mode temperature inside the room or temperature is to be controlled based aisles based on the Average, on the averaged data value collected Maximum, or Minimum of by the collector.
Page 107: Setting Communications Parameters (Ip Settings)
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Step 2 Set Indoor fan ctrl type to Pressure diff control. Step 3 Change the other parameters based on the following instructions. Table 4-5 Parameter description Parameter...
Page 108: Setting Communications Parameters (Wifi Settings)
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-12 Setting the IP address, subnet mask, and gateway address Step 2 Set the parameters by referring to Table 4-6. Table 4-6 IP address settings Parameter...
Page 109: Setting Communications Parameters (Modbus Settings)
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-13 Setting WiFi parameters Step 2 Set the parameters by referring to Table 4-7. Table 4-7 WiFi settings Parameter Setting Method WiFi SSID Set WiFi SSID based on the actual configuration; WiFi SSID is the name used for the WiFi hotspot over which a mobile phone can connect to the air conditioner.
Page 110 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-14 Setting Modbus Setting Parameters for Modbus RTU Step 1 On the home screen, choose Settings > Comm Settings > Modbus Settings. Figure 4-14 displayed. Step 2 Set parameters for Modbus RTU by following instructions in Table 4-8.
Page 111: Setting Communications Parameters (Snmp Parameters)
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Parameter Setting Setting Method a client, can connect to a remote server and establish communication.  If you set Link mode to Server and client, the air conditioner, as a server, supports two client connection and establishes communication.
Page 112 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-15 Setting SNMP communications parameters Step 2 Set SNMP Version based on site requirements, and then tap Submit.  If you set SNMP Version to ALL or SNMPv1&v2c, you can set Read Community and...
Page 113 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-17 Setting write community Step 4 Add an SNMPv3 user. Tap Add under SNMP V3. Enter a planned value for User Name, select values for Auth. Protocol and Prop.
Page 114 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-19 Setting an SHA password Set AES Password and Confirm Password as planned, and tap , as shown in Figure 4-20. Figure 4-20 Setting an AES password Tap Submit.
Page 115 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning SNMP Port is set to 161 by default. Step 6 Tap Next Page. Step 7 Set SNMP trap parameters. Tap Add under SNMP Trap. Set Trap Address as planned and Trap Port to the actual port number.
Page 116: Setting Teamwork Control Parameters
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-23 Exporting the MIB file successfully 4.5.8 Setting Teamwork Control Parameters Prerequisites Assign teamwork group number and teamwork unit address for the teamwork controlled precision air conditioners as follows: ...
Page 117 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-24 Teamwork settings Step 2 Set teamwork control parameters. All teamwork control parameters can be set on the master air conditioner. Only Teamwork group no., Teamwork unit address, Teamwork CAN resistor enable, Teamwork function and Network can be set on slave air conditioners.
Page 118 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Default Parameter Description Configuration Principle Value function is enabled, this device works in harmony with others that in the same group. Teamwork Set the teamwork mode. The...
Page 119 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Default Parameter Description Configuration Principle Value recalculated. Requiremen Enable or disable the Avoid competit run is Disable t control requirement control for the recommended for the master device.
Page 120 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Step 4 On the home screen of any teamwork controlled air conditioner, tap . If the teamwork control succeeds, the teamwork topology of the air conditioner in the group is displayed, as...
Page 121: Startup
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Parameters Note color: red, bright gray as shown in Bright gray indicates that the device is operating without any critical alarms, as shown in If teamwork succeeds, the teamwork icon is green. If teamwork fails, the teamwork icon is red. If teamwork mode is disabled, the teamwork icon is gray.
Page 122 (EMS) is effective only when the remote dry contact or On/Off status on remote is on the status of on. Prerequisites Download the Service Expert app from Huawei app store and runs on Android. Step 1 Tap Start on the home screen of the ACC. ...
Page 123 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-28 Startup Step 2 Open the Service Expert app. User interfaces displayed in this document correspond to the APP software version V100R001C00B043T007 and are for reference only.
Page 124 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-29 Offline activation Step 5 Tap Offline Activation and the screen shown in Figure 4-30 is displayed. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 125 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-30 Generating a startup password Step 6 On the Offline Activation screen, enter Bar code and Verification code, which are available on the home screen of the ACC shown in Figure 4-26.
Page 126: Charging The Remaining Refrigerant
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning 4.7 Charging the Remaining Refrigerant Prerequisites  Check that the outdoor unit switch is turned on before you start the compressor.  Remove the refrigerant steel vessel after checking that no more refrigerant is required.
Page 127 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Context The startup wizard allows for commissioning of components such as the indoor fan, electric heater, humidifier, condensate pump, and cooling system. It also supports component automatic operation and automatic device checking, and can output commissioning report.
Page 128 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-32 Checking before startup Step 3 Tap Yes for check items one by one according to the prompt messages on the screen. Step 4 Tap Yes and enter the screen where you select commissioning items, as shown in Figure 4-33.
Page 129 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-34 Fan commissioning The fan commissioning item is mandatory. After commissioning a component succeeds, the system automatically performs commissioning for the next component you selected. If commissioning fails, startup wizard ends.
Page 130 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-35 L1/L2/L3 current detection Figure 4-36 Electric heater commissioning Step 7 After the electric heater commissioning, the humidifier commissioning screen is displayed. Verify that the main water inlet valve is open. Check whether the humidifier pipes and the solenoid valve leak.
Page 131 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-37 Humidifier commissioning Step 8 After the humidifier commissioning, the condensate pump commissioning screen is displayed. Check whether the condensate pump vibrates and generates operating sound.
Page 132 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-39 Cooling system commissioning Step 10 View the commissioning result.  Figure 4-40 is displayed if component commissioning succeeds. Figure 4-40 Commissioning successfully  Figure 4-41 is displayed if component commissioning fails, which ends startup wizard commissioning.
Page 133 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning  If commissioning fails, tap Commissioning failed. in Figure 4-41 to view the details, as shown in Figure 4-42.  After the fault is cleared, choose Maint > Wizard Startup to enter the wizard startup screen for new commissioning.
Page 134: Optional) Power-Off
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-43 Adjusting the air deflecting assembly Put down the button. 4.9 (Optional) Power-off Context In shutdown mode, the Shutdown button is green (unavailable) and the Start button is gray (available).
Page 135: Checking After Commissioning
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 4 Commissioning Figure 4-44 Shutdown Step 2 Tap Yes. If the device is successfully shut, the system displays a message, indicating that the command is successfully triggered. Step 3 Turn off the switch QF3 that controls the outdoor unit and compressor and switch QF4 that controls the electric heater.
Page 136: Operation And Maintenance
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Operation and Maintenance 5.1 Routine Maintenance 5.1.1 Data Record Before performing monthly maintenance, record data in Table 5-1. Table 5-1 Recording table Menu Item Parameter Record Choose Settings >...
Page 137 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Table 5-2 Monthly maintenance checklist Task Baseline Requirement Troubleshooting The air filter is clean and not Replace the air filter. It is recommended filter blocked.
Page 138 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Task Baseline Requirement Troubleshooting and then charge new refrigerant. NOTE If the sight glass does not obviously turn green, use a blow drier to blow wind to the filter until the sight glass is green.
Page 139: Quarterly Maintenance
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-1 Removing a water pan filter 5.1.3 Quarterly Maintenance Table 5-3 lists quarterly maintenance items for the indoor unit. Table 5-3 Quarterly maintenance checklist...
Page 140: Yearly Maintenance
Calculate the total cooling capacity and total server load of running indoor units. If the total load exceeds 80% of the total cooling capacity of the air conditioner, Huawei recommends increasing the number of air conditioners.
Page 141: Alarm Reference
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance 5.2 Alarm Reference Table 5-5 describes the alarm reference of the NetCol5000-A. If the Clear icon is displayed on the Details screen, the alarm can be manually cleared by tapping the Clear button after the fault is rectified.
Page 142 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 2 T/H brd sensor are loose or T/H sensor. comm generated. damaged. 2. Set the DIP switch of the failed 2.
Page 143 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity or is unavailable. outdoor unit. 7. Cables to the outdoor unit 8. Maintain or replace the are not properly outdoor unit or unit connected.
Page 144 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity switch is blocked or 5. Check the cables to the disconnected. differential press switch. 5. The cables to the differential press switch are loose or damaged.
Page 145 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 1. The power supply voltage 1. Check the power supply a033 Power Major The alarm is too low.
Page 146 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity overflow and the connected. connection to the system overflow sensor. 3. The water sensor is shuts faulty.
Page 147 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 1. The load is low. 1. Please consult Huawei a049 Supply-air Warning The alarm technical support. 2. The ambient temp is low.
Page 148 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity PSU 2 generated. fault 1. The communication 1. Check the a054 PSU 1 Major The alarm cables of the PSU are...
Page 149 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 1. The refrigerant leaks. 1. Identify and repair the a060 Comp Major The alarm leaking point, and refill suction LP 2.
Page 150 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity overvolt generated. 2. The comp driver is faulty. comp driver. 3. The comp is faulty. 3. Maintain or replace the comp.
Page 151 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity dirty/blocked & heat ex module. effect poor. 5. The drive module is faulty. 1. The cables to phase U of 1.
Page 152 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity abnormal float are loose or high float. generated. damaged. 2. Maintain or replace the 2. The high float is faulty or high float or clear the stuck.
Page 153 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 1. The cables to the indoor 1. Check the cables to the a102 Indoor fan Major The alarm fan are loose or damaged.
Page 154 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity ation fault generated. 2. The ETH converter is works properly. faulty. 2. Maintain or replace the 3. The smart socket is ETH converter.
Page 155 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity abnormal incorrect for slave units. fan. L1/L2 generated. 2. Teamwork settings are 2. Modify teamwork disconnect incorrect for the master settings for slave units to unit.
Page 156 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity and the sensor is faulty. 2. Verify that the suction compresso temperature sensor works r shuts properly.
Page 157 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity open generated. the lower threshold. voltage meets specifications. 1. A cable of the fan is loose 1. Secure the cables...
Page 158 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 3. The fan is faulty. a145 handling methods. 2. Cut off the three-phase power supply and check whether the driver output cable is faulty.
Page 159 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity a167 Auxiliary Major The alarm The auxiliary power supply Replace the auxiliary power power is faulty. supply module.
Page 160 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity 3. The aisle T/H sensor of unit, and monitoring host an air conditioner is (ECC). faulty. 3. Maintain or replace the 4.
Page 161 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity experiences overvoltage. humidifier pump voltage. 5. The water pump races 5. Rectify the liquid level due to a liquid level detection fault.
Page 162: Troubleshooting
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Alarm Alarm Alarm Impact Possible Cause Solution Severity down. board. 1. The PSU is faulty. 1. Replace the PSU. a222 Main ctrl Critical The alarm module 2.
Page 163 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Symptom Possible Cause Solution start. the display. The compressor does not work. Check whether the drive is faulty. Replace it if it is faulty. The refrigerant loop or a...
Page 164 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Symptom Possible Cause Solution generates normal range. excessive Refrigerant oil is insufficient. Add refrigerant oil. noises. The transport sheet metal is not Remove the sheet metal.
Page 165 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Symptom Possible Cause Solution The liquid level detector is faulty. Check the alarm. Check cable connections for high and low liquid level detectors. Check whether the liquid level detectors are damaged.
Page 166: Parts Replacement
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Symptom Possible Cause Solution heater does heater are short-circuited. not stop heating. If the fault persists, contact Huawei technical support. 5.4 Parts Replacement After replacing any part, verify that the new part works properly.
Page 167: Replacing The Indoor Fan
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-2 Removing an air filter Step 2 Draw out the air filter. Step 3 Remove the lower air filter in the same way. Step 4 Install new air filters in an inverse order.
Page 168 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance  A spare indoor fan of the same model is available and functional.  Tools: protective gloves, Phillips screwdriver, diagonal pliers, cable tie Context The indoor fan can be maintained only from the front door. Replacing fan 9 is used as an example.
Page 169 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-5 Installing a new fan Step 4 Switch on the circuit breaker for the faulty fan 9, and close the front door. Figure 5-6 Switching on the circuit breaker for the faulty fan 9 Step 5 Power on the device.
Page 170: Replacing The Differential Pressure Switch
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-7 Performance maintenance Step 6 Tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms. ----End 5.4.3 Replacing the Differential Pressure Switch Prerequisites ...
Page 171 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-8 Removing a differential pressure switch Step 4 Use a Phillips screwdriver to remove the screws on the top cover of the differential pressure...
Page 172 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-9 Setting values for a differential pressure switch Step 7 Install the new differential pressure switch and the pressure tube, and connect the cables.
Page 173: Replacing The Compressor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 9 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms. ----End 5.4.4 Replacing the Compressor...
Page 174 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-11 Angle valve (1) Angle valve nut (2) Adjustable nut (3) Pipe nut Procedure Step 1 On the controller home screen, tap Shutdown, and turn off the air conditioner switch in the PDC.
Page 175 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-12 Removing the electric heating belt and compressor power cables Step 6 Remove the compressor. Heat the air intake angle valve joints using a heat gun for 10 minutes. Secure the angle...
Page 176 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-13 Removing a compressor angle valve After removing the valve, seal the suction vent immediately to ensure that the system is clean and moisture does not enter the pipe.
Page 177 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-14 Removing a compressor bracket Step 7 Secure the new compressor to the bracket again using a solid wrench. Figure 5-15 Installing a compressor bracket...
Page 178 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance  Seal the screw thread joints in the pipe using sealant.  After the installation, check that the input power cables of the compressor are in the same phase sequence as the wiring terminals.
Page 179 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-17 Connecting cables to the electric heating belt and the compressor Step 11 Vacuumize the system and precharge refrigerant, as shown in 4.1 Vacuumizing and Precharging Refrigerant.
Page 180: Replacing The Filter Dryer
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance ----End 5.4.5 Replacing the Filter Dryer Prerequisites  The filter dryer needs to be replaced.  A spare filter dryer of the same model is available and functional.
Page 181 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Exercise caution because the device is still energized after it is shut down on the controller home screen. Step 2 Open the rear door and remove the air filter.
Page 182 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 5 Remove the plastic plug from the port of the new filter dryer. Step 6 Install the new filter dryer, as shown in Figure 5-21.
Page 183: Replacing The Driver
 Tools: Phillips screwdriver, diagonal pliers, cable tie. Before checking and maintaining the NetCol5000-A, ensure that the primary power supply to the NetCol5000-A is disconnected and the drive has been placed without primary power supply for 10 minutes. Otherwise, electric shocks may occur.
Page 184 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-22 Removing cables Step 4 Remove the four screws on the driver using a Phillips screwdriver and pull out the driver, as shown in Figure 5-23.
Page 185 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 5 Install the new driver. Figure 5-24 Installing a driver Step 6 Connect the new driver cables. Issue 01 (2017-07-27) Huawei Proprietary and Confidential...
Page 186: Replacing The Liquid Level Detector
Step 7 Install the air filter and close the rear door. Step 8 Power on the NetCol5000-A, choose Maint > Diagnostic Mode > Enter on the home page, start the compressor, and check that the compressor works properly and the NetCol5000-A generates no alarms.
Page 187 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-26 Liquid level detector (1) High liquid level detector (2) Low liquid level detector Procedure Step 1 On the controller home screen, tap Shutdown, and turn off the air conditioner switch in the PDC.
Page 188 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-27 Removing a water pan cover Step 3 Cut the cable tie securing the liquid level detector and remove the terminal. Step 4 Remove the two butterfly nuts on the liquid level detector fastener, remove cables from the...
Page 189 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 5 Remove the liquid level detector, as shown in Figure 5-29.  Remove screws from the high liquid level detector using a Phillips screwdriver, and remove the high liquid level detector.
Page 190: Replacing The Condensate Pump
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-30 Installing a liquid level detector Step 7 Install the water pan cover, and close the front door. Step 8 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms.
Page 191 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Procedure Step 1 On the controller home screen, tap Shutdown, and turn off the air conditioner switch in the PDC. Exercise caution because the device is still energized after it is shut down on the controller home screen.
Page 192 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-32 Removing a condensate pump assembly Remove the hose clamp at the water pan drain outlet, and remove the hose, as shown by (1) and (2) in Figure 5-32.
Page 193 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 5 Install the new condensate pump and reinstall the condensate pump assembly in the cabinet. Connect the water pipe and secure it using hose clamps. Connect the condensate pump power cable.
Page 194: Replacing The Humidifier Pump
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance 5.4.9 Replacing the Humidifier Pump Prerequisites  The humidifier pump needs to be replaced.  A spare humidifier pump of the same model is available and functional.
Page 195 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-36 Removing a humidifier pump Step 6 Install the new humidifier pump by performing the preceding steps in reverse order, connect the hoses and cables, and secure them using hose clamps.
Page 196 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-37 Installing a humidifier pump Step 7 Install the air filter and close the rear door. Step 8 Power on the device. On the LCD home screen, choose Maint > Performance Maint, and clear the humidifier pump runtime.
Page 197: Replacing The Wet Film Humidifier
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance 5.4.10 Replacing the Wet Film Humidifier Prerequisites  The wet film humidifier needs to be replaced.  A spare wet film humidifier of the same model is available and functional.
Page 198 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-39 Removing a wet film humidifier Hold the blue release sleeve and remove the water inlet pipe. Loosen the two captive nuts on one side of the wet film humidifier and remove the humidifier.
Page 199 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-40 Install a wet film humidifier Put the bottom of wet film humidifier into the installation position, and then put the top into the installation position.
Page 200: Replacing The Electric Heater
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance 5.4.11 Replacing the Electric Heater Prerequisites  The electric heater needs to be replaced.  A spare electric heater of the same model is available and functional.
Page 201 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-43 Removing an electric heater Step 5 Install the new electric heater in the reverse order of the removal. Issue 01 (2017-07-27) Huawei Proprietary and Confidential...
Page 202 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-44 Installing a new electric heater Step 6 Install the fan support and connect the terminals. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 203 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-45 Installing a fan support Install the fan support by following the consequence on the label of fan support, to avoid reverse installation. Step 7 Power on the system. On the main screen, choose Maint > Diagnostic Mode > Enter.
Page 204: Replacing A Strong-Current Box
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance ----End 5.4.12 Replacing a Strong-current Box Prerequisites  A component inside the electric control box, such as the main control board, circuit breaker, AC contactor, fuse, or fuse base, needs to be replaced.
Page 205 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-47 Removing cables Step 4 Remove the four screws in front of the strong-current box using a Phillips screwdriver, as shown in Figure 5-48.
Page 206 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-48 Removing a strong-current box Step 5 Replace the electric control box. Ensure that the four screws are tightened when installing the strong-current box.
Page 207: Replacing Main Control Module, Auxiliary Power Supply Module, Or Psu
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-49 Installing a strong-current box Step 7 Reconnect the cables and terminals shown in Figure 5-47. Step 8 Install the air filter and close the rear door.
Page 208 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance  The new module must be installed in the same slot as the faulty module. Otherwise, the air conditioner may fail to work properly. ...
Page 209 When installing a new module, ensure that the handle is in the upper part of the module, and the HUAWEI logo is in the lower left corner of the module. Step 5 Insert the spare module into the corresponding slot, and flip the clip upwards to lock the module.
Page 210: Replacing The T/H Sensor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-52 Locking a module Step 6 Install the network cable and air filter, and close the rear door. Step 7 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms.
Page 211 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 3 Disconnect cables from the RS485_IN and RS485_OUT ports on the T/H sensor, as shown by (1) in Figure 5-53. Step 4 Pull out the T/H sensor in the direction shown by (2) in Figure 5-53.
Page 212: Replacing The Lcd
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-54 Installing a T/H sensor Step 6 Install the air filter and close the rear door. Step 7 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms.
Page 213 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Exercise caution because the NetCol5000-A is still energized when it is being shut down on the LCD. Step 2 Open the front door and disconnect cables. Figure 5-55 Disconnecting cables...
Page 214 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-56 Removing an LCD Step 4 Secure the spare LCD screen to the original position on the front door using a Phillips screwdriver. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright ©...
Page 215 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-57 Installing an LCD Step 5 Connect the cables to the LCD and close the front door. Figure 5-58 Connecting cables Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright ©...
Page 216: Replacing The Switch
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 6 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms. ----End 5.4.16 Replacing the Switch...
Page 217 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-59 Removing a faulty switch Step 4 Remove all cables from the faulty switch QF3 or QF4, as shown by (2) in Figure 5-59.
Page 218: Replacing The Contactor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-60 Installing a switch Step 7 Reconnect the cables to the switch and reinstall the cover, as shown by (2) and (3) in Figure 5-60.
Page 219 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Exercise caution because the device is still energized after it is shut down on the controller home screen. Step 2 Open the rear door and remove the air filter.
Page 220: Replacing The Spd
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-62 Installing a new contactor Step 7 Install the air filter and close the rear door. Step 8 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is running normally without any alarms.
Page 221 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Exercise caution because the device is still energized after it is shut down on the controller home screen. Step 2 Open the rear door and remove the air filter.
Page 222: Replacing The Relay
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-64 Installing an SPD Step 7 Reinstall the strong-current box, as shown by Step 6 Step 7 5.4.12 Replacing a Strong-current Box. Step 8 Power on the device, and ensure that the air conditioner works properly without alarms.
Page 223 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-65 Removing a relay Step 4 Insert the spare relay to the mounting base, properly fasten the buckle, and connect the cables. Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright ©...
Page 224: Replacing The Fuse
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-66 Installing a relay Step 5 Power on the device, and ensure that the air conditioner works properly without alarms. Step 6 Install the air filter and close the rear door.
Page 225 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Step 2 Open the rear door and remove the air filter. Step 3 Find the fuse to be replaced and open the knife-shaped fuse holder. Take the fuse out of the fuse holder by using a flat-head screwdriver.
Page 226 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 5 Operation and Maintenance Figure 5-68 Replacing the fuse Step 5 Power on the device, and ensure that the air conditioner works properly without alarms. Step 6 Install the air filter and close the rear door.
Page 227: Faq
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.1 Querying Temperature and Humidity Curves Context The T/H Curve screen displays temperature and humidity curves showing the recent temperature and humidity changes. You can choose to display the curves showing data changes of recent one hour, one day, seven days, or 30 days.
Page 228: How Can I Handle Active Alarms
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  You can view the humidity from (humidity set point - 5%) to (humidity set point + 5%) at least, and from (humidity set point - 50%) to (humidity set point + 50%) at most. Specific humidity fluctuation range displayed varies according to different models of precision air conditioners.
Page 229: Querying Logs
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  If the icon is not displayed on the Details screen, the alarm can be automatically cleared after the fault is rectified.  If the icon is displayed on the Details screen, it indicates that the alarm can be cleared manually.
Page 230: Querying Device Runtime
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-5 Query logs screen ----End 6.4 Querying Device Runtime Procedure Step 1 On the home screen, choose Maint > Performance Maint. Figure 6-6 is displayed. Figure 6-6 Performance Maint screen ----End 6.5 Querying Component Status...
Page 231: Querying System Parameters
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  Enter the Device Details screen and then enter the menu of a specific component. All parameters for the component are displayed. Procedure  When viewing the component status through Status, choose Common Functions >...
Page 232 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  Enter the Operating Info screen that displays the major system parameters such as the current detected temperature, humidity, dew point temp, and auxiliary power voltage. ...
Page 233: Querying Version Details
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.7 Querying Version Details Procedure Step 1 On the home screen, select About. Step 2 On the About screen, tap Version Info or E-label. Figure 6-11 Figure 6-12 are displayed.
Page 234: Deleting Historical Alarms
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.8 Deleting Historical Alarms Context To delete historical alarms, log in as the admin user. Exercise caution when deleting all historical alarms. Because this operation may cause clearance of all historical alarms and affects device maintenance.
Page 235: Exporting Data
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ If you perform this operation, all logs will be deleted, and device maintenance will be affected. Exercise caution when doing this operation. Procedure Step 1 On the home screen, choose Maint > Log Maint > Delete Logs > Yes to delete all the logs.
Page 236: Clearing The Runtime
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-14 Select path Step 2 Tap the file where the user saves current data in the Select Path dialog box and tap Next. Then tap Yes in the displayed dialog box.
Page 237: Calibrating A Sensor
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Procedure Step 1 On the home screen, choose Maint > Performance Maint. Figure 6-16 is displayed. Figure 6-16 Performance Maint screen Step 2 Tap Clear of a specific performance parameter to clear its runtime.
Page 238: Calibrating The Screen
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ ----End 6.13 Calibrating the Screen Context  You can calibrate for touching point deviation on the touchscreen.  You can calibrate the screen by tapping the screen on the Screen Calib page or by DIP switch.
Page 239 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-19 Screen displayed when the calibration is complete  Calibrating the screen by DIP switch. Flip toggle switch 1 for the display to ON, and others to the opposite position, and wait for 3 seconds before calibrating.
Page 240: How To Perform Quick Settings
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.14 How to Perform Quick Settings Context On the quick settings screen, you can set the language, time, date, and system. Procedure Step 1 Choose Settings > Quick Settings on the home screen. The quick settings screen is displayed,...
Page 241: How To Modify A Password
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.16 How to Modify a Password Prerequisites  To modify a password, log in as the admin user or operator user.  You can only modify the password of the current user.
Page 242: Restoring Factory Settings
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-23 Modifying the password If you forget the password, restore the initial password by referring to 6.17 Restoring Factory Settings. ----End 6.17 Restoring Factory Settings Context If you have forgotten the password or need to delete system information, you can restore factory settings using DIP switch on the main control module.
Page 243 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  If you restore factory settings, all system data will be restored to the state before delivery, including login passwords, operation logs, parameter configurations, alarms, and performance statistics. Perform this operation with caution as it may affect other users.
Page 244: How To Silence The Buzzer
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ After the system is restored to factory settings, the user password is also reset to the preset password, and must be promptly modified to ensure information security and normal system running.
Page 245: How To View Teamwork Control Information
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ ----End 6.20 How to View Teamwork Control Information Procedure Step 1 On the home screen, choose > . The teamwork control information is displayed, as shown in Figure 6-26.
Page 246: How To Change The Ssh Access Password
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ  All parameters displayed on Settings > Comm Settings.  Date format and time zone settings displayed on Settings > User Settings.  All parameters displayed on Maint > Sensor Adjust.
Page 247 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-27 Entering the user name and password The new password should meet the following requirements:  Contains at least eight characters.  Contains at least two types of characters: lowercase letter, uppercase letter, digit, space, and special character (`~!@#$%^&*()-_=+\|[{}];:'",<.>/?).
Page 248 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-28 Switching to the root user Step 4 Enter passwd (the password change command) to change the password. In the displayed window, enter a new password and confirm it, as shown in Figure 6-29.
Page 249: How To Import A Certificate And A Key
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.23 How to Import a Certificate and a Key Prerequisites You have obtained CA certificate file, local certificate file, and key file into a USB disk that...
Page 250: How To Import A Configuration File
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ 6.24 How to Import a Configuration file Context You are advised to use the FAT32 USB flash drive with a capacity no greater than 64 GB. Procedure Step 1 Tap Maint >...
Page 251 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual 6 FAQ Figure 6-33 Data process 1 Figure 6-34 Data process 2 Step 4 After the file is imported successfully, Figure 6-35 is displayed. Then tap Finish. Figure 6-35 Importing the file successfully If the file fails to be imported, a failure message will be displayed.
Page 252: A Electric Control Box Layout
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual A Electric Control Box Layout Electric Control Box Layout Figure A-1 Electric control box layout Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
Page 253 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual A Electric Control Box Layout Table A-1 Electric control box layout description Name and Function Side (1) Dual (2) Dual (3) Crankcase (4) Electric heater contactor view power power...
Page 254 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual A Electric Control Box Layout Name and Function DPT 5 V DC (Reserved) Reserved Fan circuit breakers Fan1–Fan10 (between the two groups of fans on the front door) Front...
Page 255: B Cooling Component Layout
(20) Low pressure sensor (21) Suction temperature sensor The pipes shown in real lines in Figure B-1 are installed by Huawei before delivery and the pipes shown in dotted lines in Figure B-1 are installed onsite (by technical personnel). Issue 01 (2017-07-27) Huawei Proprietary and Confidential Copyright ©...
Page 256: C Parameter Description
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Parameter Description  Parameters and preset values are from ACC V200R001C30B078.  Parameters are those that can be queried by the admin user.  Table C-1, only the component names are used. For example, Indoor fan 1 and Indoor fan 2 are indicated by Indoor fan.
Page 257 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value Settings > IP assigning mode Specifies the way of allocating IP addresses Manual for precision air conditioners. Comm Settings > IP...
Page 258 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value set to Client. Network port It is recommended that you retain the default 16100 value 16100. If you need to change the value, enter a value as required.
Page 259 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value power is active and the ambient temperature is lower than the certain temperature range of the temperature set point. Heat mode...
Page 260 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value ports 1 and 2 for reporting common alarms are open and generate no alarms. Outdoor fan Select the control mode for the outdoor fan...
Page 261 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value main power is active and the ambient humidity is lower than the certain humidity range of the humidity set point. Humid mode Specifies the starting mode of the humidifier.
Page 262 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value at ctrl point device conducts cooling or heating based on the settings. Ctrl humid After the T/H control type and the humidity 25.0% RH...
Page 263 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual C Parameter Description Menu Parameter Description Default Value Time zone Specifies the time zone displayed on the Consistent with the ACC. current interface time zone Maint > Compressor total Total runtime for each component.
Page 268: E Acronyms And Abbreviations
NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual E Acronyms and Abbreviations Acronyms and Abbreviations alternating current Computational Fluid Dynamics Controller Area Network direct current dual in-line package electronic commutation electronic expansion valve Element Management System liquid crystal display...
Page 269 NetCol5000-A 42 kW Air Cooled In-row Precision Air Conditioner User Manual E Acronyms and Abbreviations negative temperature coefficient power distribution cabinet positive temperature coefficient Power Usage Effectiveness RCCB Residual Current Circuit Breaker surge protective device thin film transistor Universal Series Bus...

Huawei NetCol5000-A User Manual

About this Document

1 Safety Precautions

2 Product Description

3 Installation Guide

4 Commissioning

5 Operation and Maintenance

6 Faq

A Electric Control Box Layout

B Cooling Component Layout

C Parameter Description

D Electrical Conceptual Diagram

E Acronyms and Abbreviations

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Summary of Contents for Huawei NetCol5000-A

Table of Contents