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NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
Table 6-4 Semiannual maintenance items
Component
Monitoring
Electric heater
Components in
the electric
control box
(removing the
electrical control
box before
maintaining a
component
inside the box)
Cables
T/H sensors
Issue 03 (2020-01-10)
Item
Export smart cooling product logs,
alarms, temperatures, humidity, the
operating status of the compressor,
fan, electric heater, electrode
humidifier, and water pump, and
time from the monitoring system.
View the historical alarms
generated in this quarter and select
the most common five ones. (If no
monitoring system is available, skip
this item.)
Check that the electric heater is
fixed reliably.
Check that the electric heater
surfaces are not eroded.
Ensure that there is no reverse or
open phase for the input power
cable of the smart cooling product.
Check that all circuit breakers and
fuses are working properly.
Check and fasten all circuit
connections.
Check that various electric
components, control components,
and the surge protection and
voltage test board are free from
dust.
Check that the main control board,
LCD, T/H sensor, and surge
protection and voltage test board
are not aging on the surface.
Perform static tests to check
whether each contactor has a
flexible pickup.
Check that cables are not aged.
Check that the temperature and
humidity readings are correct as
measured.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
(On the Basis of Monthly
Maintenance)
Troubleshooting
Rectify the fault or contact
Huawei technical support.
Retighten the electric heater and
its switch.
Replace the electric heater.
Adjust the cable sequence.
Replace the abnormal circuit
breaker and fuse.
Fasten all circuit connections.
(Perform the operation with the
power off) Use a brush or
compressed dry air to clean
various electric components,
control components, and the
surge protection and voltage test
board.
Replace the abnormal board.
Replace the abnormal parts.
Replace cables if necessary.
If the temperature deviation is
greater than 1° C or humidity
deviation is greater than 5%,
calibrate or replace the humidity
and temperature sensor.
149
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