Page 1 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual Issue Date 2019-10-10 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
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual About This Document About This Document Purpose This document describes the NetCol8000-E modular indirect evaporation cooling system in terms of its product overview, installation, power-on commissioning, operation and maintenance (O&M). It helps readers understand how to use and maintain the NetCol8000-E.
Page 4 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual About This Document Symbol Description Supplements the important information in the main text. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration. Change History Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues.
Page 5: Table Of Contents
NetCol8000-E220 Modular Indirect Evaporative Cooling System 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 ................................4 1.5 Others....................................
Page 6 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual Contents 3.8 Installing a Return Air Duct ............................40 3.9 Connecting Water Pipes .............................. 40 3.10 Vacuumizing ................................45 3.11 Precharging Refrigerant ............................47 3.12 Connecting Cables ..............................48 3.12.1 Precautions ................................48 3.12.2 Connecting the Power Cable ..........................
Page 7 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual Contents 6.3 Troubleshooting ................................ 110 6.4 Alarm Reference ............................... 116 6.5 Parts Replacement ..............................157 6.5.1 Replacing the Air Filter............................157 6.5.2 Replacing the Fan ..............................158 6.5.3 Replacing the Differential Pressure Switch ......................161 6.5.4 Replacing the Compressor .............................
Page 8 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual Contents 7.2.3 How Can I View Active Alarms and Historical Alarms ..................192 7.2.4 How Can I Export or Import a Configuration File ....................193 7.2.5 How Can I Export Fault Information ........................193 7.2.6 How Can I Change the Smart Cooling Product IP Address on the WebUI ............
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 NetCol8000-E220 Modular Indirect Evaporative Cooling System 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: Others
The retailer can recycle this product in a safe and environmentally friendly way. 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 02 (2019-10-10)
Page 14: Product Description
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Product Description 2.1 Model Number Description Figure 2-1 NetCol8000-E model number description Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 15: Product Composition
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description 2.2 Product Composition 2.2.1 Dimensions Figure 2-2 Appearance Figure 2-3 Component description (external) (1) Outdoor air (2) Electric control (3) Display (4) No. 1st outlet port maintenance door (5) Condensate (6) No.
Page 16: Physical Ports
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description (9) Spray water (10) Side air return (11) No. 3rd refill pipe port maintenance door Figure 2-4 Component description (internal) (1) Outdoor air outlet (2) Electric (3) Indoor air...
Page 17: Controller
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Type Name Dimensions Quantity Outdoor fresh air inlet port (on the 500 mm x 1200 mm side) Outdoor air outlet port 2130 mm x 1310 mm Indoor air return port...
Page 18 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description (3) I2C/I2V (reserved) (4) DP (display port) (5) SW (reserved) a: USB has the following functions:  After installing the WiFi module, connect the WiFi module to the smart cooling product using the app on the mobile phone to obtain the initial startup password.
Page 19 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description − Cascade: The number of operating devices varies depending on the thermal load in equipment room to meet requirements promptly, eliminate hot spots, and save energy. − Anti-competitive operation: A mechanism is adopted to prevent devices in the same equipment room operating in opposite status, in order to save energy.
Page 20: Optional) Air Channel
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description 2.2.4 (Optional) Air Channel Figure 2-6 Appearance Table 2-3 Technical Specifications Name Parameter Dimensions (H x W x D) 5647 mm x 2020 mm x 840 mm 2.3 Working Modes...
Page 21 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Figure 2-7 Dry mode Figure 2-8 Wet mode Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 22: Operating Environment Specifications
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Figure 2-9 Dry mode+Auxiliary cooling mode Figure 2-10 Wet mode+Auxiliary cooling mode 2.4 Operating Environment Specifications Operating Environment Table 2-5 Operating environment Item Parameter –40º C to 45º C...
Page 23 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Item Parameter Storage humidity 5%–95% RH Protection level IPX5 (indoor) Installation mode The concrete foundation or steel base is required. Altitude Not derated below 1000 m; derated when the altitude is between 1000 m and 4000 m.
Page 24: Technical Specifications
(RCCB) that is insensitive to single-phase DC pulsation and transient impulse current. Note: If the requirements are not met, contact Huawei technical support for an optimized solution. 2.5 Technical Specifications...
Page 25 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 2 Product Description Item Parameter Running weight NetCol8000-E220DM0AA: 5750 kg NetCol8000-E220DM0BA: 6300 kg 1: Tested under rated working conditions (return air: 38º C/25%RH, indoor static pressure: 150 Pa, outdoor static pressure: 50 Pa, outdoor temperature: 15° C)
Page 26: Installation Guide
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Installation Guide 3.1 Installation Precautions Storage Before installing the NetCol8000, place it in dry, rainproof, fireproof, and anticorrosive environments.  Place the NetCol8000 outdoors, and ensure that the NetCol8000 is protected from dirt, rain, snow, other substances, or animals, and that the protective film on the surface of the NetCol8000 is intact.
Page 27 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-1 Installation clearances (unit: mm) (1) Electric control box Check the auxiliary facilities before installing the NetCol8000 is in position.  The concrete foundation provided are sufficiently strong and rigid to bear all weight and vibration during the operation of the NetCol8000.
Page 28: Material Preparations
Engineering purchase: This material will not be delivered by Huawei, and customers need to purchase it. 3.2.1 (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: Contact the refrigerant producer to confirm the refrigerant authenticity.
Page 29: Water Refill Pipe And Drainpipe
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Table 3-1 Mapping between temperatures and R410A saturation pressure Tempe Saturation Tempe Saturation Temper Saturation rature Pressure-Surf rature Pressure-Surfac ature Pressure-Surfac (° C) ace Pressure (° C) e Pressure (°...
Page 30: Pipe Support
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Pipe Name Connector Material Quantity Length Dimensions engineerin Spray G 1-1/2 inch DN40 Rigid pipe: g survey. drainpipe port with inner made of PP-R, screw threads C-PVC, or other...
Page 31 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Table 3-3 Recommended Cables Item NetCol8000-E2 Remarks Indoor unit The compressor Maximum current 141 A main power cooling system cable obtains power from the mains (factory default). Recommended 4 x 70 mm...
Page 32: Optional) Concrete Platform Scenario
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  The cables are routed over a ladder or bracket in a single layer (E or F in IEC60364-5-523). The distance between the cable and the cable is twice the diameter of the cable.
Page 33 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Stage Precautions During hoisting Do not allow any unauthorized people to enter the hazardous areas and never stand under the crane arm during hoisting. Ensure that the crane is properly located and avoid long-distance hoisting.
Page 34 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-4 Concrete platform (unit: mm) (1) NetCol8000-E (2) Concrete foundation Step 2 Determine the reference points for installing NetCol8000-Es on the concrete platforms. Mark the reference points using a marker.
Page 35 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-5 Hoisting a NetCol8000-E Step 5 Secure the equipment to the concrete platform using four right angle brackets. Figure 3-6 Securing the equipment to the concrete platform ----End Issue 02 (2019-10-10) Copyright ©...
Page 36: Optional) Steel Base Scenario
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Follow-up Procedure After the equipment is hoisted and installed, verify the installation to ensure normal use and smooth subsequent installation. Table 3-7 Installation checklist Check Item Check Method Criteria Contact between Observe.
Page 37 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Table 3-9 Parameters for hoisting NetCol8000-Es Weight Steel Rope Steel Rope Dimensions (H x W x D) Length Quantity Net weight: 5700 > 6.5 m 4 PCS 6058 mm x 2438 mm x 3600 mm...
Page 38 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-8 Steel base (unit: mm) (1) NetCol8000-E (2) Steel base Step 2 Adjust the equipment in the installation direction, connect the steel hoisting ropes, and hoist the equipment onto the base.
Page 39 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Step 3 Turn the four M20 twistlocks in the base by 90 degrees to lock the equipment, and tighten the twistlocks using a torque wrench. Figure 3-10 Tightening twistlocks...
Page 40: Unpacking
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide 3.5 Unpacking 3.5.1 Remove the Packaging Procedure Step 1 Inspect the outer packaging for signs of damage. If any damage is found, contact the shipping company immediately. Step 2 Remove the packaging.
Page 41: Checking The Nitrogen Pressure
Figure 3-12 is missing by turns. If they do not exist, contact Huawei technical support. If they exist, remove each valve bonnet and use it to press the valve plugs in turn. If nitrogen is exhausted, the system is working properly. If no nitrogen is exhausted, contact Huawei technical support.
Page 42 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  Ground cable: Use 95 mm ground cables and route them through a plastic-coated metal hose. Figure 3-13 Grounding lug Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 43: Installing A Supply Air Duct
Figure 3-14 Grounding cable 3.7 Installing a Supply Air Duct Context The supply air duct is optional. Customers can purchase it from Huawei or prepare it by themselves. The following describes how to install a Huawei supply air duct. Procedure Step 1 Remove the pedal.
Page 44 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-15 Removing the pedal Step 2 Remove the eight screws that fasten the air vent baffle, and remove the air vent baffle. Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 45 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-16 Removing the air vent baffle Step 3 Push the stitched air channel into the bottom of the device. Step 4 Remove the canvas sheet metal from the end of the air duct using diagonal pliers.
Page 46 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-18 Connecting the equipment to the air duct (1) Connection between the air duct and canvas (A) Canvas sheet metal (B) Canvas (C) Thermal insulation foam (D) Equipment Step 6 Wrap the rubber plastic thermal insulation foam (at least 3 cm thick, covering the aluminum foil) for the canvas.
Page 47 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-20 Securing an air duct (indoor installation scene) Figure 3-21 Securing an air duct (outdoor installation scene) Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 48: Installing A Return Air Duct
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  When the equipment is installed indoors, it is recommended that shock pads be installed between the air duct and the floor.  When the equipment is installed outdoors, it is recommended that the air duct be secured on the concrete platform to prevent rain from soaking the air duct.
Page 49 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-23 Drainage layout diagram The unit of pressure (P) is Pa. When the NetCol8000 is in negative pressure state, H1 = H2 ≥ P/10 + 20 Drainage Dimensions Figure 3-24 DN20 condensate drainpipe dimensions (unit: mm) (3) PPR pipe (Φ25...
Page 50 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-25 DN40 spray drainpipe dimensions (unit: mm) (3) PPR pipe (Φ50 (1) PPR external thread connector G (2) PPR equal-diameter (1–1/2 inch) elbow Installing Water Pipes  Clean the external water pipes before connecting them to the water inlet and outlet pipes of the coil pipes of the NetCol8000.
Page 51 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-26 Water inlet and outlet pipes (1) Condensate (2) Condensate (3) Spray (4) Spray water drainpipe 1 (DN20) drainpipe 2 (DN20) drainpipe (DN40) refill pipe (DN20)  Connect the water pipes using thread connectors. Connect external water inlet and outlet pipes using connectors with inner screw threads.
Page 52 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Pipe Anti-freezing Condensate drainpipes and water refill pipes may freeze and thereby be blocked or crack in low-temperature areas. Anti-freezing measures must be taken for the pipes. Wrap the pipes with an electric trace heater, starting from the water refill and drain ports to the frozen soil layer.
Page 53: Vacuumizing
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  The electric heating belt needs to be wrapped around the drainpipe and water refill pipe evenly during onsite installation.  Wrap the electric heating belt before wrapping the thermal insulation foam. Ensure that the thermal insulation foam covers the electric heating belt.
Page 54 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-30 Vacuumizing (1) Vacuum pump (2) Pressure gauge (3) Liquid pipe needle valve (4) Low-pressure needle valve Step 2 In the beginning, the vacuum pump makes loud noise and exhausts white smoke from the exhaust vent.
Page 55: Precharging Refrigerant
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide 3.11 Precharging Refrigerant Prerequisites Before charging refrigerant, ensure that air is exhausted from the gas pipe connecting to the refrigerant cylinder. Context  The NetCol8000 is a dual system, and charging refrigerant should be carried out one by one or simultaneously.
Page 56: Connecting Cables
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 57 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  The power supply of the NetCol8000 is consistent with the voltage, phase quantity, and frequency on the NetCol8000 nameplate. The NetCol8000 operating voltage cannot exceed the rated value ± 10%, and the inter-phase imbalance voltage cannot exceed 2%.
Page 58: Connecting The Power Cable
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide valve relay K6 (4) Spray pump (5) Fan power cable terminals (6) Exhaust fan switch QF8, Indoor contactor fan switch QF9, LED switch QF12, KM4/KM5, Electric heater switch QF13,...
Page 59 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-33 Connecting the power cable ----End Exception Handling  Generally, only the active and standby power supplies are required. The following figures show the power supply systems. Figure 3-34 Power supply scenario 1 Issue 02 (2019-10-10) Copyright ©...
Page 60 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide  If you need to connect the compressor cooling system to the standby power supply, connect the other end of the jumper from the active power supply terminal to the standby power supply terminal.
Page 61: Optional) Connecting The Signal Cables
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-37 Removing a jumper Figure 3-38 Power supply scenario 3 3.12.3 (Optional) Connecting the Signal Cables Prerequisites Smoke sensor, remote startup and shutdown signal, and common alarm signal, water sensor micro differential pressure sensor can be connected to the NetCol8000-E.
Page 62 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Context Figure 3-39 Signal terminals Table 3-11 Signal table X501 X502 X503 Smoke sensor power supply Water leakage detection RS485+ (water leakage in the floor) (Differential pressure sensor) Smoke sensor feedback - Water leakage detection RS485–...
Page 63: Teamwork Networking And Monitoring
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Step 2 Route the water sensor cable through the signal cable hole at the bottom of the electric control box. Step 3 Connect the other end of the water sensor cable to 1 and 2 on signal terminal X502.
Page 64: Connecting The Teamwork Network Cable
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Name Color Status Description generated. No alarm, warning alarm, or minor alarm is generated. 3.12.4.2 Connecting the Teamwork Network Cable Smart cooling products in a teamwork group must be of the same model.
Page 65: Connecting The Monitoring Network Cable
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Step 3 Fixed cables. ----End 3.12.4.3 Connecting the Monitoring Network Cable Connecting the RS485 Monitoring Network Cable (Modbus-RTU Protocol) When monitoring smart cooling products over northbound RS485, the EMS needs 3 seconds to collect data from one smart cooling product.
Page 66 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-44 CAN networking and no grouping  In CAN networking and grouping, connect the COM/FE port on the last smart cooling product in each monitoring group to the monitoring device, as shown in Figure 3-45.
Page 67: Optional) Connecting The T/H Sensor Outside The Cabinet
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-46 Connecting the FE monitoring network cable This wiring method applies to the smart module scenarios or other scenarios with LAN switches regardless of teamwork networking. ----End 3.12.5 (Optional) Connecting the T/H Sensor Outside the Cabinet...
Page 68 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-47 Cabling inside the device  Secure the T/H sensors inside the cabinet at the NetCol8000 return air side and connect their IN ports to the main control board. When connecting the T/H sensors outside the cabinet, connect the OUT port of one T/H sensor inside the cabinet to the IN port of the next T/H sensor outside the cabinet.
Page 69: Removing The Transport Fasteners And Protective Covers
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 70 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-48 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 71 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Step 7 Remove the elastic cord from the two floats. Figure 3-50 Removing the elastic cord Step 8 Remove the protective covers from the four air filters on the fresh air side.
Page 72 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-51 Removing the protective covers from the air filter on the fresh air side (1) Side fresh air filter G2 (2) End fresh air filter G2  The two side air filters need to be removed from outside.
Page 73: Verifying Installation
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Figure 3-52 Removing the air filters Step 10 Remove the air filter cover and secure the air filter. Step 11 Close all the maintenance doors and install the air filter on the fresh air vent on the outdoor side.
Page 74 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Check Item Expected Result Actual Result □ Passed □ Failed The fan has no foreign matter inside. □ Passed □ Failed The fan blades rotate properly. □ Passed □ Failed Water system The water pump is secured reliably and steadily.
Page 75 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 3 Installation Guide Table 3-16 Pipeline checklist Expected Result Actual Result □ Passed □ Failed All pipes are secured reliably and steadily. □ Passed □ Failed All pipes are wrapped with thermal insulation foam, and the insulation foam is intact.
Page 76: Power-On And Commissioning
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Power-on and Commissioning 4.1 Preparing for Power-On Procedure Step 1 Check that all switches except QF1/QF2 are closed in the NetCol8000. Step 2 Verify that the input voltage meets the requirement.
Page 77 To prevent the effect of misoperation on the system during the O&M, 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 78 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-2 Quick Settings Table 4-2 Quick settings parameters Menu Parameter Setting Guide Default Value Settings > Quick Language Specifies the interface Consistent with Settings > Select language to Chinese or...
Page 79 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Menu Parameter Setting Guide Default Value Teamwork for non-teamwork CAN resistor scenarios.  For teamwork scenarios, set this parameter to Yes for the first and last smart cooling products in...
Page 80 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Menu Parameter Setting Guide Default Value are the same, and device heat loads are distributed evenly. Cascade If the heat load to the device Disable function increases, the cascade function is recommended.
Page 81 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Menu Parameter Setting Guide Default Value generated, port 1 for reporting common alarms generates a dry contact close alarm; if a major alarm is generated, port 2 for reporting...
Page 82: Home Screen
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Menu Parameter Setting Guide Default Value this type are set, the device runs based on the settings. Humidity After the Temperature and 50% RH setpoint humidity control type and...
Page 83 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-3 Home screen Table 4-3 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 84: Initial Configuration
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Items Note The current minor alarm refers to the current major alarm and their and their quantity quantity. The current warning alarm refers to the current warning alarm and their and their quantity quantity.
Page 85 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning  This section describes how to enable Cold aisle sensor 1. Procedure Step 1 On the home screen, choose Settings > System Settings > T/H sensor. Figure 4-4 displayed.
Page 86: Setting Communications Parameters
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Parameter Description Configuration Principle the temperature is to be controlled based on the maximum data value collected by the collector.  Min value: Select Min value if the temperature is to be...
Page 87: Setting Communications Parameters (Modbus Tcp Protocol)
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Step 2 Set baud rate and communication address by following instructions in Table 4-5. Table 4-5 Baud rate and communication address settings Parameter Setting Setting Method Set the baud rate as required. The value should be...
Page 88 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning If the DHCP server is configured on the NMS, select DHCP auto. If no, set this parameter to Manual. Step 2 On the home screen, choose Settings > Comm Settings > Modbus Settings. Set Link mode to Server and client or Client, and set Client encryption to Enable.
Page 89: Setting Communications Parameters (Snmp Protocol)
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Parameter Setting Setting Method NMS port It is recommended that you retain the default value. If you number need to change the value, enter a value as required. This parameter is configurable when Link mode is set to Client.
Page 90 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-9 Setting read community Tap the text box after Write Community, as shown in Figure 4-10. Set Write Community as planned, tap and then tap Submit. Figure 4-10 Setting write community Step 4 Add an SNMPv3 user.
Page 91 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Passwords of an authentication protocol and proprietary protocol must comply with the following policies:  The password must consist of 8–15 characters and contain at least two types of characters among uppercase letters (A–Z), lowercase letters (a–z), and digits (0–9).
Page 92 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-14 Setting SNMP port SNMP Port is set to 161 by default. Step 6 Tap Next Page. Step 7 Set SNMP trap parameters. Tap Add under SNMP Trap.
Page 93: Optional) Setting Wifi Parameters
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Before using a USB flash drive, ensure that its data has been scanned by antivirus software and is secure. Figure 4-16 Exporting the MIB file successfully 4.4.3 (Optional) Setting WIFI Parameters...
Page 94: Setting Teamwork Control Parameters
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning 4.4.4 Setting Teamwork Control Parameters Prerequisites Assign teamwork group number and teamwork unit address for the teamwork controlled smart cooling products as follows:  Teamwork group no.: Group the smart cooling products in adjacent areas as one, that is, assign one teamwork group number for them.
Page 95 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Configuration Parameter Description Default Value Principle which is the same for all the devices in the group. Smart Smart cooling product Set the assigned unit cooling addresses should be address.
Page 96 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Configuration Parameter Description Default Value Principle cooling cooling products in this ascending order, which is products in group. from 1 to 32. The rest will this group become the standby ones.
Page 97 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Configuration Parameter Description Default Value Principle device.  When the requirement control is Indoor fan unified control or Central load distribution, all smart cooling product fans in the group rotate at the same speed.
Page 98 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Step 3 Complete the teamwork settings for all the smart cooling products by performing Step 1 Step Step 4 On the home screen of any teamwork controlled smart cooling product, tap .
Page 99 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Parameters Note as shown in Ground Red indicates that a critical alarm is generated, color: red, bright gray as shown in Bright gray indicates that the device is operating without any...
Page 100: Startup
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. Apply for permission after downloading the app. Step 1 Tap Start on the home screen of the ACC.
Page 101 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-20 Password screen  If the screen shown in Figure 4-21 is displayed, indicating not initial startup, tap Yes to start the smart cooling product. Figure 4-21 Startup Step 2 Open the Service Expert app.
Page 102 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Figure 4-22 Offline activation Step 4 Tap Offline Activation and the screen shown in Figure 4-23 is displayed. Figure 4-23 Generating a startup password Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 103: Charging The Remaining Refrigerant
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Step 5 On the Offline Activation screen, enter Bar code and Verification code, which are available on the home screen of the ACC shown in Figure 4-19. Tap Generate PWD to generate a startup password.
Page 104: Wizard Startup
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Ambient Proper Discharge Proper Suction Proper Temperat Pressure Range Pressure Range Overheating Degree 15–35° C 1.5–3.1 MPa 35–45° C 2.5–3.8 MPa > 45° C 3.1–4.15 MPa If the suction pressure, discharge pressure, and suction overheating degree is without normal ranges, check and make sure that: 1.
Page 105 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning Procedure Step 1 On the home screen, choose Maint > Wizard Startup, as shown in Figure 4-24. Figure 4-24 Startup wizard  For the initial startup wizard, Last record is in gray, indicating that the operation is not allowed.
Page 106: Optional) Power-Off
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 4 Power-on and Commissioning ----End 4.8 (Optional) Power-off Context In shutdown mode, the Shutdown button is green (unavailable) and the Start button is gray (available). Procedure Step 1 Tap Shutdown on the home screen. A warning is displayed, indicating whether to shut down the smart cooling product.
Page 107: Webui
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 5 WebUI WebUI 5.1 Preparations and WebUI Login Prerequisites  Operating system: Windows 7 and later versions  Browser: IE9 and later versions, Firefox and later versions, Chrome and later versions. IE browser is used as an example.
Page 108 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 5 WebUI Figure 5-1 Setting internet options (Optional) Click the Connections tab and select LAN settings. (Optional) Under Proxy server, clear Use a proxy server for your LAN. Figure 5-2 Setting proxy server Issue 02 (2019-10-10) Copyright ©...
Page 109 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 5 WebUI Click OK. Step 5 Log in to the WebUI of the smart cooling product. Enter https://IP address (such as IP address https://192.168.0.10) in the address box of the browser, and then press Enter to enter the WebUI login page.
Page 110: Webui Introduction
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 5 WebUI ----End 5.2 WebUI Introduction For data transmission security, the smart cooling product supports WebUI access through SSL. Figure 5-5 Home page Figure 5-6 WebUI menu hierarchy Issue 02 (2019-10-10) Copyright © Huawei Technologies Co., Ltd.
Page 111 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 5 WebUI The actual menu hierarchy prevails. WebUI Common Functions Table 5-1 WebUI common functions Menu Functions Monitoring Monitor the device running information in real time, set device running parameters, and control the device running. For example, set temperature and humidity parameters, enable temperature and humidity sensor, and set fan control type.
Page 112: System Operation And Maintenance
Pay attention to the safety symbols on the equipment and all safety instructions in this document. The safety precautions given in this document do not cover all safety precautions. Huawei will not be liable for any consequence caused by violation of the safety operation regulations and design, production, and usage standards.
Page 113: Routine Maintenance
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance 6.2 Routine Maintenance Smart Cooling Product Running  Softened water is used for circulation in the water tank in summer. The water quality meets the requirements. ...
Page 114: Monthly Maintenance
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance the resistance reaches the specified value. The following table lists the recommended final resistance values. Table 6-1 Final resistance value Filter Efficiency Recommended Final Resistance (Pa) G2 (initial efficiency) 50–100...
Page 115 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Task Baseline Requirement Troubleshooting generates no metal friction noise or collision noise from inside. Pipe The refrigerant pipe does not leak Repair the leakage points and rewrap or corrode, and the wrapped thermal insulation foam.
Page 116: Quarterly Maintenance
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance 6.2.2 Quarterly Maintenance Table 6-3 Quarterly maintenance checklist Compo Item (Monthly Maintenance) Troubleshooting nent Monitori Export smart cooling product logs, Rectify the fault or contact alarms, temperature, and humidity, as Huawei technical support.
Page 117 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Compone Item (Quarterly Maintenance) Troubleshooting without any abnormal noise. Pump Enter the diagnostic mode, start the Seal the pipes again. water pump and check whether the water pump is leaking.
Page 118: Troubleshooting
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-2 Opening the exhaust plug of the water pump 6.3 Troubleshooting If any of the following exceptions occurs during the operation of the fan, shut down the fan: ...
Page 119 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Fault Possible Cause Solution Type Open phase The voltage is less than the lower threshold or greater than the upper threshold. A short circuit exists Check the power cable and voltage of the between the fan and the motor.
Page 120 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Fault Possible Cause Solution Type heat sink). Excessively The fan is rotating slowly. Check the fan speed. small The air channel is Check whether the airflow is smooth (air airflow blocked.
Page 121 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance  Exercise caution when removing a dusty air filter from a metal frame to avoid polluting the smart cooling product and damaging the filtering materials.  Replace the air filter.
Page 122 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Symptom Possible Cause Solution properly running. The fan fan blade is interfered Adjust the fan blade. with the shell. The return air damper is shaking. Adjust the return air damper.
Page 123 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Symptom Possible Cause Solution Refrigerant leaks. Check the pipeline for leakage. The compressor Refrigerant is insufficient. Charge more refrigerant. suction pressure is The indoor temperature is set to a...
Page 124: Alarm Reference
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance 6.4 Alarm Reference Table 6-7 Alarm list Alarm Alarm Alarm Probable Cause Solution Severity Name A001- MAJOR Return air 1 1. The cables to the temperature 1. Check the cables to the temperature sensor are loose or damaged.
Page 125 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 6. The chilled water flow is temperature and humidity insufficient, or the supply water sensor. temperature is high. 6. Check the pressure and 7.
Page 126 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name sensor is faulty. sensor. 4. The communications port of the 4. Maintain or replace the main main control board is faulty.
Page 127 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name main control board is faulty. 4. Maintain or replace the main control board. A007- MAJOR Hot aisle 1 1. The cables to the temperature 1.
Page 128 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name control board. A007- MAJOR Hot aisle 4 1. The cables to the temperature 1. Check the cables to the...
Page 129 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name exceed exceeds the alarm threshold. and clear the accumulated runtime alarm runtime. A018- WARNIN Indoor fan 3 The accumulated runtime of the fan 1.
Page 130 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name differential pressure switch is 4. Dredge or replace the blocked or disconnected. pressure tube. 5. The cables to the differential 5.
Page 131 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 4. The expansion valve is blocked 3. Maintain or replace the filter or stuck, or the expansion valve coil dryer.
Page 132 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A049- WARNIN Supply air 1. The temperature sensors or 1. Adjust the positions of the temperature and humidity sensors...
Page 133 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name positions. sensors. 2. The thermal load power is high 2. Add air conditioners or or the cooling capacity is contact Huawei technical insufficient.
Page 134 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name pressure sensor. A063- CRITICA Compressor 1 1. The cables to the compressor 1. Check the cables to the drive drive are loose or damaged.
Page 135 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A077- MAJOR Exhaust fan 5 The fan is faulty. 1. Maintain or replace the fan. fault A077- MAJOR Exhaust fan 6 The fan is faulty.
Page 136 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A077- MAJOR Indoor fan 6 The fan is faulty. 1. Maintain or replace the fan. fault A077- MAJOR Exhaust fan 1 The fan is faulty.
Page 137 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A077- MAJOR Indoor fan 1 1. The ground cable to the fan is not 1. Check the ground cable fault connected properly.
Page 138 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name limit alarm point, and refill refrigerant after maintenance. A091- WARNIN Cold aisle 1. The temperature sensors or 1. Adjust the positions of the...
Page 139 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name alarm the upper threshold. 2. Measure the ambient humidity. 3. The temperature and humidity sensor is not installed in a proper 3.
Page 140 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name n failed 2. The fan is faulty. 2. Maintain or replace the fan. A120- MAJOR Indoor fan 2 1. The communications cable to the 1.
Page 141 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A134- MAJOR Compressor 2 1. The cables to the suction 1. Check cables to the suction suction temperature sensor are loose or temperature sensor.
Page 142 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name alarm 3. The displayed values of the 2. Add refrigerant as required in liquid pipe temperature sensor or the user manual.
Page 143 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name startup is in complete or clear the Wizard progress startup in progress alarm manually to exit wizard startup. A222-...
Page 144 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name abnormal 2. The fan is faulty. 2. Maintain or replace the fan. A26B- MAJOR Exhaust fan 2 1. The cable to the fan is not 1.
Page 145 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A26B- MAJOR Exhaust fan 3 The fan is faulty. 1. Maintain or replace the fan. power supply abnormal A26B-...
Page 146 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A26B- MAJOR Exhaust fan 4 1. The cable to the fan is not 1. Check the cable connection to power supply connected properly.
Page 147 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name damper fault damper. A279- CRITICA Motorized 1. The feedback cable to the air 1. Check the feedback cable damper damper is loose or damaged.
Page 148 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A27C- MAJOR Cold aisle 5 1. The cables to the temperature 1. Check the cables to the temp/humid and humidity sensor are loose or...
Page 149 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name sensor fault damaged. sensor. 2. The temperature and humidity 2. Maintain or replace the sensor is faulty. temperature and humidity sensor.
Page 150 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name sensor is faulty. temperature and humidity sensor. A27C- MAJOR Hot aisle 3 1. The cables to the temperature 1. Check the cables to the...
Page 151 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A280- MAJOR Power 1. The power supply frequency 1. Check the power supply frequency exceeds the upper threshold. frequency, and ensure that it is abnormal within the working range.
Page 152 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name abnormal 2. The cables to the SPD and range. voltage detection board are loose or 2. Check the cable connection to damaged.
Page 153 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name detection board. A282- CRITICA Power phase 1. The phase sequence of the power 1. Rectify the phase sequence of sequence supply is incorrect.
Page 154 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name unit has an open phase, incorrect 7. Check the cables to the indoor phase sequence, or is unavailable. and outdoor fans.
Page 155 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 9. The exhaust fan is faulty. A28B- CRITICA Comp 2 high 1. The refrigerant leaks. 1. Identify and repair the leaking...
Page 156 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 6. The refrigerant is overfilled. refrigerant. 7. The exhaust fan is faulty. 7. Maintain or replace the exhaust fan.
Page 157 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 8. The exhaust fan is faulty. exhaust fan. A28C- CRITICA Comp 2 high 1. The input power of the outdoor 1.
Page 158 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name faulty. refrigerant. 7. The refrigerant is overfilled. 8. Maintain or replace the exhaust fan. 8. The exhaust fan is faulty.
Page 159 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name temperature. A28D- CRITICA Comp 2 low 1. The refrigerant leaks. 1. Identify and repair the leaking suction point, and refill refrigerant after 2.
Page 160 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name poor. power-off. 4. The electric control box cavity is 5. Replace the drive module. dirty or blocked, and the module heat exchange effect is poor.
Page 161 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name A28F- MAJOR Compressor 2 1. The cables to phase U of the 1. Check the cables to the drive power compressor drive are loose or compressor drive.
Page 162 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name 5. The compressor is faulty. refrigerant. 5. Maintain or replace the compressor. A291- MAJOR Compressor 2 1. The compressor lacks oil.
Page 163 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name the spray high float is faulty. A304- MAJOR Spray drain 1. The spray drainpipe is dirty or 1. Clear the spray drainpipe.
Page 164 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name the spray low float is faulty. switch. 7. Maintain the spray low float. A307- WARNIN Spray water The accumulated runtime the spray 1.
Page 165: Parts Replacement
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Alarm Alarm Alarm Probable Cause Solution Severity Name differential cable is loose or damaged. differential pressure sensor. pressure 2. The DIP switch of the 2. Set the DIP switch of the...
Page 166: Replacing The Fan
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-3 Removing the air filter Step 4 Install new air filters and secure the air filter. Step 5 Close and lock the maintenance door. Step 6 On the LCD home screen, choose Maint > Performance Maint, and clear the air filter runtime.
Page 167 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Procedure Step 1 On the controller home screen, tap Shutdown to turn off the fan switch. Step 2 Open maintenance door 1, enter the equipment, push the maintenance door leading to the upper layer upward, and enter the upper layer.
Page 168 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-5 Removing the fan support Step 6 Install a new fan, connect the wiring terminals, and bind the cables using cable ties. Step 7 Close maintenance door 1.
Page 169: Replacing The Differential Pressure Switch
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance 6.5.3 Replacing the Differential Pressure Switch Prerequisites  The differential pressure switch needs to be replaced.  A spare differential pressure switch of the same model is available and functional.
Page 170: Replacing The Compressor
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Step 5 Remove the screws on the top cover of the differential pressure switch and cable screws using a Phillips screwdriver, and remove the cables, as shown by (2) in Figure 6-6.
Page 171 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Context Components and working principle: The scroll compressor is composed of the air intake and exhaust angle valves, oil pump, motor, and electric heating belt. Air is sucked from the outside and exhausted from the position in the center.
Page 172 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance After removing the valve, seal the suction vent immediately to ensure that the system is clean and moisture does not enter the pipe. Heat the air intake angle valve joints using a heat gun for 10 minutes. Secure the angle nut and pipe nut on the air intake side, using two 30# adjustable wrenches respectively.
Page 173: Replacing The Driver
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Step 11 Check that the phase sequences are correct before starting the system. Then choose Maint > Diagnostic Mode > Enter to check the system pressure and temperature and ensure the refrigerant is charged with an optimal system status.
Page 174: Replacing The Float
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-9 Removing a driver Step 6 Install the new driver. Step 7 Connect the new driver cables. Step 8 Close the no.2nd maintenance door. Step 9 Power on the device, choose Maint > Diagnostic Mode > Enter on the home page, start the compressor, and check that the compressor works properly and the device generates no alarms.
Page 175 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-10 Float position Procedure Step 1 On the controller home screen, tap Shutdown, and turn off the device switch in the PDC. Exercise caution because the device is still energized after it is shut down on the controller home screen.
Page 176: Replacing The Pump
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Step 4 Loosen the screws that secure the liquid level switch using a solid wrench and remove the float. Step 5 Install the new float and properly connect its terminals.
Page 177: Replacing The Switch
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Figure 6-11 Removing the flange assembly Remove the fastener from the water pump using a socket wrench, and pull out the spray pump. Step 4 Install a new spray pump on the device, install the flange assembly at the inlet and outlet of the water pump, and close the maintenance door.
Page 178: Replacing The Contactor
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System 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 door of the electric control box.
Page 179: Replacing The Spd
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance ----End 6.5.10 Replacing the SPD Prerequisites  The SPD (Figure 3-32 shows the position of SPD) needs to be replaced.  A spare SPD of the same model is available and functional.
Page 180: Replacing The Fuse
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Step 2 Open the door of the electric control box. Step 3 Remove the cables from the faulty relay, unclamp the buckle at the relay installation box, and remove the faulty relay.
Page 181: Replacing The T/H Sensor
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Procedure Step 1 On the controller home screen, tap Shutdown, and turn off the device switch in the PDC. Exercise caution because the device is still energized after it is shut down on the controller home screen.
Page 182 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 6 System Operation and Maintenance Step 6 Power on the device and tap Startup on the home screen. Ensure that the device is running normally without any alarms. ----End Issue 02 (2019-10-10)
Page 183: Faq
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ 7.1 Operations on the LCD 7.1.1 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 184: Querying Logs
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ You can view the temperatures from (temp set point – 3° C) to (temp set point + 3° C) at least and  from (temp set point – 30° C) to (temp set point + 30° C) at most.
Page 185: Querying Version Details
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ 7.1.5 Querying Version Details Procedure Step 1 On the home screen, select About. Step 2 On the About screen, tap Version Info or E-label.  The Version Info screen displays version details of the control board, compressor, SPD and volt detect board, and exhaust fan.
Page 186: How Can I Handle Active Alarms
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ 7.1.8 How Can I Handle Active Alarms? Procedure Step 1 Tap (or choose Alarms > Query Act Alarms) on the home screen to enter the active alarms screen. Figure 7-2 Active alarms ...
Page 187: Deleting Historical Alarms
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Step 3 Tap Fault Diagnosis to view the diagnosis report. Rectify the faults following instructions in the diagnosis report. Figure 7-4 Diagnosis report ----End Follow-up Procedure To query historical alarms, choose Common Function > Query Hist Alarms or Alarms >...
Page 188: Deleting Logs
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ 7.1.10 Deleting Logs Context  Logs can be deleted in a one-click manner.  To delete logs, log in as the admin user. If you perform this operation, all logs will be deleted, and device maintenance will be affected.
Page 189: How To Modify A Password
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Procedure Step 1 On the home screen, choose Maint > Sensor Calibration. Step 2 Fill the calibration value based on the measured error. ----End 7.1.13 How to Modify a Password Prerequisites ...
Page 190: How To Set Alarm Parameters
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Figure 7-6 Modifying the password ----End 7.1.14 How to Set Alarm Parameters Prerequisites Before setting the alarm parameters, get familiar with the relationship among each parameter. Configurations of temperature and humidity alarms and main board alarms for the air cooled devices comply with the following relationships: ...
Page 191 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Cold aisle high temperature alarm threshold + 5°C ≤ Return air high temperature alarm  threshold Supply air low temperature alarm threshold + 5°C ≤ Return air low temperature alarm ...
Page 192: How To Commission Single Component
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Figure 7-8 Setting alarm parameter 2 ----End 7.1.15 How to Commission Single Component Context  On the diagnostic mode screen, you can turn on or off components, and control their output ratio.
Page 193: Which Parameters Are Restored To Default Values After Default Settings Are Operated
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Step 4 Choose Maint > Diagnostic Mode > Exit or tap to exit the diagnostic mode. ----End 7.1.16 Which Parameters Are Restored to Default Values After Default Settings Are Operated After choosing Settings >...
Page 194: How To Export And Import A Configuration File
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ  If the USB flash drive is not properly connected, the system will display No USB device found. during operations about the USB flash drive. Procedure Step 1 Tap Maint > USB Operations > Export to enter the Select Path screen, as shown in Figure 7-9.
Page 195 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ You can export parameter configurations for smart cooling product 1 to a USB flash drive. If smart cooling product 2 needs the same parameter configurations, import the configuration file to smart cooling product 2.
Page 196 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Figure 7-13 Select file Step 6 Select the file that needs to be imported and tap Next, as shown in Figure 7-14. Figure 7-14 Confirming the file Step 7 After you tap Confirm and Next,...
Page 197: How To Import A Certificate And A Key
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Figure 7-16 Data process 2 Step 8 After the file is imported successfully, Figure 7-17 is displayed. Then tap Finish. Figure 7-17 Importing the file successfully If the file fails to be imported, a failure message will be displayed.
Page 198: Webui Operations
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ  Ensure that the key file has been encrypted using AES128.  Before using a USB flash drive, ensure that its data has been scanned by antivirus software and is secure.
Page 199 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ  Administrator: The user name is admin and password is Changeme by default. The administrator has all rights, including the rights for user management, browsing and modifying parameters, software upgrade, and data import and export.
Page 200: How To Install A Network Security Certificate
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Specify User Name, Password, Confirm Password, Password Validity Period, Advance Warning Before Password Expires (days), and Timeout Interval, select appropriate values from the Authority and Login Source drop-down list boxes, and click Confirm.
Page 201: How Can I Export Or Import A Configuration File
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Step 2 Choose Home > Active Alarm to view the active alarms of the smart cooling product. Click Details in the Alarm Description area to view alarm details of devices.
Page 202: How Can I Change The Smart Cooling Product Ip Address On The Webui
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual 7 FAQ Step 3 (Optional) Select Encryption Password for Export and enter an encryption password. If Encryption Password for Export is selected, the exported data package will be encrypted, and you need to enter the encryption password to decompress the data package. To ensure data security, you are advised to select Encryption Password for Export.
Page 203: A Cleaning The Netcol8000-E
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual A Cleaning the NetCol8000-E Cleaning the NetCol8000-E Prerequisites Tools: long-handled soft brush, barrel, vacuum cleaner, cotton cloth Materials: detergent and clean water Documents: none Skill requirement: common technician Procedure Step 1 Clean the interior of a NetCol8000-E.
Page 204: B Maximum Water Consumption
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual B Maximum Water Consumption Maximum Water Consumption Table B-1 Maximum water consumption City Maximum Water Consumption Per Equipment (L/h) Beijing Harbin Changchun Shijiazhuang Xining Urumqi 1180 Lanzhou Xi'an Zhengzhou Jinan Nanjing Shanghai...
Page 205 NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual B Maximum Water Consumption Maximum Water Consumption Per City Equipment (L/h) Changsha  Water consumed by upstream water processing equipment has been considered when the maximum water consumption is determined.  The preceding table is for reference only. You need to check the local weather parameters when designing specific solution.
Page 206: C Cooling Component Layout
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual C Cooling Component Layout Cooling Component Layout Figure C-1 Cooling component layout (1) Compressor (2) Damper (3) High pressure sensor (4) High pressure switch (5) Discharge temperature (6) Check valve sensor (7) Exhaust pipe needle...
Page 214: E Acronyms And Abbreviations
NetCol8000-E220 Modular Indirect Evaporative Cooling System User Manual E Acronyms and Abbreviations Acronyms and Abbreviations controller area network controller area network fast Ethernet fast Ethernet negative temperature coefficient negative temperature coefficient power supply unit power supply unit positive temperature coefficient...

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