Semi-Annual Maintenance; Annual Maintenance - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual

7.4 Semi-Annual Maintenance

Table 7-2 Semi-annual maintenance checklist
Compon
ent
Conducti
vity
sensor

7.5 Annual Maintenance

Table 7-3 Annual maintenance checklist
Compon
ent
Fan
Groundi
ng
Electrical
wiring
Issue 10 (2024-01-30)
Item (on the Basis of
Quarterly Maintenance)
Clean the conductivity
sensor probe.
Use a standard calibration
liquid to calibrate the
sensor.
Item (on the Basis of
Semi-Annual
Maintenance)
Enter the diagnosis mode,
start the exhaust fan and
indoor fan respectively,
and check whether the
fans run properly without
any abnormal noise.
● Check that the ground
connectors of the unit
are intact and free
from rust.
● Check that the ground
bolts are free from rust
and securely connected
to ground electrodes.
Check that the screws of
electrical components are
not loose.
Copyright © Huawei Digital Power Technologies Co., Ltd.
7 Routine Maintenance
Troubleshooting
If the calibration fails, replace the
conductivity sensor.
Troubleshooting
Replace the fan.
If the ground connectors of the unit are
damaged, repair them in a timely
manner and take anti-corrosion
measures periodically.
Tighten screws.
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