Yearly Maintenance - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Compo
nent
Water
tank

6.2.3 Yearly Maintenance

Table 6-4 Yearly maintenance checklist
Compone
nt
Sensor
Heat
exchange
r
Welding
spot and
needle
valve
Exhaust
fan and
air supply
fan
Pump
Issue 06 (2020-08-19)
Item (Monthly Maintenance)
There is no foreign matter or dirt in the
water tank.
Item (Quarterly Maintenance)
Use a high-precision humidity
and temperature sensor to
calibrate the humidity and
temperature sensors inside and
outside the cabinet.
The heat exchanger fins are not
pushed down.
Check that the welding spots and
needle valves do not leak using
soapy water, or check that they
are free from oil stains.
Enter the diagnosis mode, start
the exhaust fan and air supply
fan, and check whether the fan
runs properly without any
abnormal noise.
Enter the diagnostic mode, start
the water pump and check
whether the water pump is
leaking.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
After the equipment is shut
down, slowly mix the dirt
and water using a tool
such as a broom. Enter the
diagnostic mode and open
the drainage valve to drain
water. If there is too much
dirt, you can open the
water inlet valve in
diagnostic mode to inject
water or inject water from
the outside to the water
pan for cleaning several
times.
Troubleshooting
If the temperature deviation is
greater than 1°C or humidity
deviation is greater than 5%,
the T/H sensor must be
calibrated or replaced.
Use a fin brush to organize the
fins that are pushed down.
If leaking points are found,
retrieve the refrigerant and
weld the leaking points again.
For details, contact Huawei
technical support.
Replace the fan.
Seal the pipes again.
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