Semi-Annual Maintenance Items - Huawei NetCol8000-C070 User Manual

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual

6.1.2 Semi-annual Maintenance Items

Table 6-2 Semi-annual Maintenance Items
Item
Monitoring
Electric
heater
Wet film
humidifier
Cables
Differential
pressure
switch
Water
leakage
sensor
Issue 07 (2021-12-30)
Method (Monthly
Maintenance)
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.
Check that the water
leakage sensor is securely
installed.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting
Locate the cause or contact 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.
Replace cables if necessary.
Reinstall the pressure inlet tube.
Reconnect the cables.
Retighten the cables.
6 Maintenance
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