Semiannual Maintenance Items - Huawei NetCol8000-C User Manual

NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Maintenance
Item
Chilled water
valve

6.3 Semiannual Maintenance Items

Table 6-2 Semiannual maintenance items
Item
Monitoring
Electric heater
Wet film
humidifier
Cables
Differential
pressure
switch
Issue 06 (2020-01-13)
Operation
is not damaged or distorted.
Check that the chilled water
valve is secure and that the
actuator cable is connected
securely.
Method
Export smart cooling product
logs and alarms as well as the
operating status and time of
the fan, electric heater, and
wet film humidifier 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.
Check that the valve on the
water inlet pipe for the wet
film humidifier is open.
When the NetCol8000-C is
on, choose Maint >
Diagnostic Mode > Enter to
start the wet film humidifier.
Check that cables are not
aged.
Check that the pressure inlet
tube is not blocked or
over-bent.
Check that cables to the
differential pressure switch
are securely connected.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
Secure the chilled water valve and the
actuator cable.
Troubleshooting
Rectify the fault or contact Huawei
technical support.
Retighten the electric heater and its
switch.
Replace the electric heater.
 If no water is supplied, check the
cable connection or replace the water
inlet solenoid valve.
 If no water is supplied to the wet film
humidifier, check the cable
connection to the water pump or
replace the humidifier water pump.
Replace cables if necessary.
Reinstall the pressure inlet tube.
Reconnect the cables.
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