NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
and then charge new refrigerant.
NOTE
If the sight glass does not obviously turn
green, use a blow drier to blow wind to the
filter until the sight glass is green.
Wear protective gloves and touch
the compressor angle valve (as
shown in Figure 5-11), needle
valve, and soldering points in the
refrigerant pipe to check whether
there are oil stains.
If there is an oil stain, check whether the
suction and exhaust pressure of the
compressor is within the normal ranges.
(For the proper ranges of suction and
exhaust pressure of the compressor, see
4.7 Charging the Remaining Refrigerant.)
If the pressure is beyond the normal
range, contact Huawei technical support.
No water exists under the water
pipe or on the thermal insulation
foam.
If drops of water are evenly
distributed, wipe off them with a dry
cloth.
If there are large water marks, close
the water inlet sluice and process the
leak points. If the thermal insulation
foam is damaged or missing, lay out
new thermal insulation foam.
The refrigerant pipe support is
secure and intact.
Replace the refrigerant pipe support and
secure it again.
The indoor fan guard is not
deformed, and the fan blades are
not damaged.
Replace the fan. 5.4.2 Replacing the
Indoor Fan describes how to replace a fan.
The indoor fan runs smoothly.
Take out the foreign matter.
The screws on the indoor fan are
not loose or distorted.
Tighten the screws using a 10# socket
wrench.
Water pan filter
Open the water pan cover at the front door, and you can see the water pan filter. Figure 5-1
shows how to remove a water pan filter.
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