Huawei NetCol5000-A User Manual page 163

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Compon
ent
Pipe
Indoor fan
Electric
heater
Humidity
and
temperatu
re sensor
Water
sensor
Issue 13 (2019-01-15)
Item
The color of the sight glass (as
shown in Figure 6-1) is near
green, or not completely turns
yellow.
Touch the compressor angle
valves (as shown in Figure
needle valves, and welding spots
of the refrigerant pipe with your
hands protected by a pair of
protective gloves to check for oil
stains.
No water exists under the water
pipe or on the thermal insulation
foam.
The thermal insulation foam is
properly laid out along the pipe.
The indoor fan guard is not
deformed, and the fan blades are
not damaged.
The indoor fan runs smoothly.
The screws on the indoor fan are
not loose or distorted.
The electric heater surface is not
eroded, dirtied, or blocked.
Humidity and temperature sensors
in smart cooling products and
aisles are securely installed.
The water sensor is secure, and
the two downward metal
conductive plates do not interfere
with each other or corrode.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
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, 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.
If there is an oil stain, check whether the
6-1), 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
5.5 Commissioning
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 thermal insulation form if it
is damaged or missing.
Replace the fan by referring to
Replacing a Indoor
Take out the foreign matter.
Tighten the screws using a 10# socket
wrench.
Replace the electric heater by referring
to 6.5.7 Replacing Electric
Secure the sensors again by referring to
3.11.6 Installing a Humidity and
Temperature Sensor Outside the
Replace the water sensor by referring to
3.11.4 Connecting the Signal
Procedure.) If the
6.5.2
Fan.
Heater.
Cabinet.
Cables.
154