Huawei NetCol8000-E220 User Manual page 131

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Task
Y-shaped
strainer
Water
tank
Compresso
r
Pipe
Issue 06 (2020-08-19)
Baseline Requirement
The air filter is not damaged
or distorted.
The Y-shaped strainer is not
blocked.
The float has no scale.
The water tank filter is not
blocked.
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 refrigerant pipe does not
leak or corrode, and the
wrapped thermal insulation
foam is intact.
Wear protective gloves and
touch the compressor angle
valve (Only for NetCol8000-
E220DM0BA), needle valve,
and soldering points in the
refrigerant pipe to check
whether there are oil stains.
No water exists under the
water pipe or on the thermal
insulation foam.
The refrigerant pipe support
is secure and intact.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
Replace the air filter.
Remove the air filter of the Y-
shaped strainer in shutdown mode,
exhaust water from pipes and
clean the air filter.
Clean up the scale from the float.
Remove the air filter from the
water tank in the shutdown state,
clean it with water, and reinstall it.
Tighten screws if the compressor is
not secured.
Clean the oil stains.
Replace the compressor.
Repair the leakage points and
rewrap thermal insulation foam.
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, If the pressure is
beyond the normal range, contact
Huawei technical support.
● 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.
Replace the refrigerant pipe
support and secure it again.
122