Huawei NetCol8000-A Maintenance And Troubleshooting Manual

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NetCol8000-A Maintena

nce and Troubleshooti

www.huawei.com

Summary of Contents for Huawei NetCol8000-A

Page 1 NetCol8000-A Maintena nce and Troubleshooti www.huawei.com Copyr ight © 2017 H uawei Technologies Co., Ltd. All r ights r eser ved.
Page 2 Foreword This document describes system O&M, part replacement  and handling of the NetCol8000-A air cooled in-row pr ecision air conditioner (NetCol8000-A in short) to fa cilitate the use and maintenance of NetCol8000-A. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved.
Page 3 Know troubleshooting process of NetCol8000-A air cooled  in-row precision air conditioner ； Know part replacement process of NetCol8000-A air coole  d in-row precision air conditioner. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 4...
Page 5  not represent all safety instructions. They are only supplements to the safety instructions. Personnel who will install, operate, and maintain Huawei equipment must receive  thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.
Page 6  s 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 7 If the air flter contact Huawei blocking alarm is not generated, check whether the technical support to diferential replace the air flter pressure tube is correctly connected 。 clogging switch. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 8...
Page 8 Visual Check that the screws are secured and not deformed. Replace the screws if inspection necessary. Visual Check that the wiring terminals are secured. Tighten the terminals. inspection Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 9...
Page 9 Check that the oil sight glass has no many air bubbles a long time, the inspection and make sure watch the oil level. superheat degree is too low. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 10...
Page 10 Close the main humidifer water inlet. Visual Check that the water pan drains water properly. Clean the foreign inspection matters in the water pan. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 11...
Page 11 6. Clean up dirt in the water pan with a hard brush and detergent, and wash the water pan with water. 7. Install the water pan in reverse order. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 12...
Page 12 (6) Manual reset temperature humidifer lamp temperature switch switch for dry heating protection (7) High water level (8) Automatic reset (9) Self-drainpipe detection switch temperature switch for dry heating protection Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 13...
Page 13 (6) Water inlet switch for dry heating protection protection (8) Topside overheat (9) High water level (7) Infrared humidifer lamp temperature switch detection switch Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 14...
Page 14 Manually check whether the manual reset temperature Contact Huawei Operation switch for dry heating protection (as shown in Figure 6-1 technical inspection or Figure 6-2) of the electric heater are operational. support. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 15...
Page 15 Visual Connect the cables dry heating protection temperature switch of the inspection again. infrared humidifer water pan, flter clogging switch, and fan airfow loss switch. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 16...
Page 16 (24 V AC ± inspection no, reconnect it. If 10%). yes, replace the transformer. Visual Check that all circuit breakers are working Replace the circuit inspection properly. breakers. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 17...
Page 17 The resistance at the terminals becomes small if the terminals detect water or any other conductive liquid. Keep the sensors far away from drain traps or foor drains and 2 m to 2.5 m away from the NetCol8000-A. Do not install the sensors directly under the NetCol8000-A Copyright ©...
Page 18 Rear Panel of holes on the rear panel of the Visual the electric electric control box are not dirty or holes using a brush. inspection control box blocked. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 19...
Page 19 The fan runs smoothly without Operation abnormal voice or vibration, and Replace the fan. inspection the blades rotate in the direction as the symbols show. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 20...
Page 20 Check the cable connection. If the component Cables are securely connected. inspection cable is loose, secure it. Visual Verify that screws on the sunshade Sunshade Screw inspection are tightened. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 21...
Page 23 Check whether the air channels too high, and air fow decreases. are blocked. Check whether the controller The air exhaust pressure is too and driver of the outdoor fan low. work properly. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 24...
Page 24 If the voltage is in the range of main An indoor fan is damaged. input voltage with the 10% deviation, the fan is damaged. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 25 Replace the faulty indoor fan.
Page 25 Check whether the water injection pipe is blocked. Check whether the water inlet pipe valve is opened. There is no humidifcation Check for any requirement on requirement. the LCD. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 26...
Page 26 Disconnect the power supply and check whether the electric An electric heater is burnt out. heater is damaged by checking the electric heater resistance properties with an ohmmeter. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 27...
Page 28 Step 3 Move f lter 2 leftwards and pull it out; Step 4 Install new f lters in an inverse order; Step 5 Tap Maint > Performance Maint to clear the f lters total runtime. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 29...
Page 30 Step 9 Lift the indoor fan and remove the fan tooling beam; Step 10 Drag the indoor fan out of the unit, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 31...
Page 31 Step 12 Remove the four screws on the motor control box at the bottom of th e fan using a 5x200 mm flat-head screwdriver, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 32...
Page 32 Step 14 Remove the eight screws securing the fan to the bottom plate using an adjustable wrench, pull up the fan cover, and take out the fan, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 33...
Page 35 Step 6 Blow away dirt with nitrogen, check the dry filter, and replace it i f necessary to protect pipes from foreign matter; Taking out a dry Removing a dry filter pipe with a welding filter Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 36...
Page 36 Step 8 Connect cables to the new compressor, start it, and continue to char ge in the refrigerant based on the system parameters to the optimal level; Step 9 Tap Maint > Performance Maint to clear the compressor total runtime. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 37...
Page 37 Step 2 Pull out the self-overflow vent to drain water out of the water pan, and remove the drainpipe; Step 3 Remove the four screws that secure the beam above the water pan, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 38...
Page 38 Step 5 Remove the four wiring terminals connecting the manual and automatic reset switches at the bottom of the water pan using combination pliers, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 39...
Page 39 Enter, open the solenoid valve and the humidif er. Make sure they work properly. Exit the Diagnostic Mode. Step 10 Tap Maint > Performance Maint to clear the humidif er total runtime. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 40...
Page 40 After the water is drained, remove the drainpipe, remove the two screws on the right of the infrared humidifier, as shown by 1 and 2 in right Figur Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 41...
Page 42 Make sure they work properly. Exit the D iagnostic Mode. Step 10 Tap Maint > Performance Maint to clear the humidifier total runtime Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 43...
Page 43 Step 2 Pull out the wiring terminals on the solenoid valve control cable us ing combination pliers, and remove the screws that secure the water injecti on solenoid valve to the baffle plate, as shown in Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 44...
Page 44 （ 3 ） Water supply humidif er, and check that the humidif er valve works properly. Then exit from the diagnostic mode. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 45...
Page 45 Exit the Diagnostic Mode. （ 1 ） Temperature （ 2 ） Electrical Step 6 Tap Maint > Performance switch heater Maint to clear the electric heater total runtime. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 46...
Page 46 Step 4 Install the new fan in the inverted sequence of Step 3–Step 1. During the installation, tighten M4 and M6 screws to torques of 1.2 N.m and 3 N.m respectively using a socket wrench. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 47...
Page 47 Step 1 Open the front panel of the electric control box; Step 2 Loosen the PG waterproof terminals of the electric control box count erclockwise using an adjustable wrench, as shown in left Figure; Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 48...
Page 48 (2) Three-phase output port (3) Outdoor fan over temperature protection port (4) N wire terminal bar (5) Main circuit breaker (6) Port 1A/2A and Port 1B/2B (7) Grounding cooper bar Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 49...
Page 49 Figure. Remove the fan driver; Step 6 Install the new fan driver in the sequence of Step 5 to Step 1; Step 7 Set the fan type. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 50...
Page 50 B. There is no humidification requirement. C. The high water level detection switch is being prot ected. D. The water pan in the infrared humidifier is not fil led with water. Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 51...
Page 52 Recommendations Huawei E-Learning website:  http://support.huawei.com/learning/en/newindex.html  Huawei support case library:  http://support.huawei.com/enterprise/servicecenter?lang  Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved. Page 53...
Page 53 Thank You www.huawei.com...

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