Huawei NetCol5000-A - Page 137

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Issue 01 (2017-07-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
129
Table 5-2 Monthly maintenance checklist
Task
Baseline Requirement
Troubleshooting
Air
filter
The air filter is clean and not
blocked.
Replace the air filter. It is recommended
that an air filter should be replaced every
6 months. 5.4.1 Replacing the Air Filter
shows how to replace an air filter.
The air filter is not damaged or
distorted.
Replace the air filter. It is recommended
that an air filter should be replaced every
6 months. 5.4.1 Replacing the Air Filter
shows how to replace an air filter.
Conden
sate pan
and
liquid
level
detector
The condensate pan and liquid
level detector have no scale.
Clean up the scale from the condensate
pan and liquid level detector.
Compre
ssor
The compressor is secured.
Tighten screws if the compressor is not
secured.
The compressor service valve has
no oil stains.
Clean the oil stains.
The operating compressor
generates no metal friction noise or
collision noise from inside.
Replace the compressor.
Wet
film
humidif
ier
The humidifier float has no scale,
and humidifier float functions
properly.
Clean or replace the humidifier float.
The wet film and humidifier water
pan are clean and have no scale.
Replace the wet film humidifier. The wet
film should be replaced every 12 months.
5.4.10 Replacing the Wet Film
Humidifier shows how to replace the wet
film. Remove and clean the water pan
filter. Figure 5-1 shows how to remove a
water pan filter.
No operating overtime alarm is
generated on the wet film
humidifier.
Replace the wet film humidifier, as shown
in 5.4.10 Replacing the Wet Film
Humidifier.
The upstream water pan filter of
the humidifier pump is not dirty or
blocked.
Remove and clean the water pan filter.
Figure 5-1 shows how to remove a water
pan filter.
Pipe
The refrigerant pipe does not leak
or corrode, and the wrapped
thermal insulation foam is intact.
Repair the leakage points and rewrap
thermal insulation foam.
The liquid sight glass is almost
green, or not totally turns yellow.
If the sight glass completely turns yellow,
water is too much in the pipe. To solve
the problem, empty refrigerant out of the
pipe, vacuumize the pipe, drain out water,