Huawei NetCol5000-A User Manual page 137

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