Electrical Heaters; Other Cooling System Components - Huawei NetCol8000-A Series User Manual

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual

6.1.6 Electrical Heaters

To ensure the reliability of the NetCol8000-A, maintain electrical heaters once a month.
Table 6-5 Electric heater monthly maintenance items
No.
1
2
3
4

6.1.7 Other Cooling System Components

To ensure that the cooling system works properly, inspect it at least once a year.
Discharge Pressure
Discharge pressure depends on load conditions and condenser efficiency. When discharge
pressure reaches the high pressure switch threshold, the switch reacts to stop the compressor.
The following table lists the reasonable discharge pressure ranges.
Table 6-6 Reasonable discharge pressure ranges
Ambient Temperature
Issue 10 (2019-01-15)
Operations
On the main screen, choose
Maint > Diagnostic Mode >
Enter. Start the electric
heater. Measure the three
phases of the electric heater
circuit breaker by using a
clamp meter. Confirm that
three-phase currents are
present, and current deviation
does not exceed 20%.
Check that no foreign matter
exists on the electric heater
surface.
Check for corrosion on the
heater surface. You can
remove the rust using a metal
brush.
Manually check whether the
manual reset temperature
switch for dry heating
protection (as shown in
Figure 6-1 or Figure
the electric heater are
operational.
It is recommended that you inspect the cooling system at shorter intervals in adverse working
environments.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting
Replace the electric heater by
referring to
Electrical Heaters.
Clean the foreign matters.
Replace the heater by referring
to 6.4.5 Replacing Electrical
Heaters.
Contact Huawei technical
support.
6-2) of
Discharge Pressure Range
6 System Operation and Maintenance
6.4.5 Replacing
Remarks
Perform the
operations
with the
power on.
Perform the
operations
with the
power off.
Perform the
operations
with the
power off.
Perform the
operations
with the
power off.
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