Huawei NetCol8000-A Series User Manual page 153

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
No.
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a: A Water sensor monitors resistance changes at terminals to check whether the floor is
watery. The resistance at the terminals becomes small if the terminals detect water or any
other conductive liquid. Keep the sensors far away from drain traps or floor drains and 2 m
to 2.5 m away from the NetCol8000-A. Do not install the sensors directly under the
NetCol8000-A.
Issue 10 (2019-01-15)
Operations
components, the main control board, and the
surge protection and voltage test board.
Check that the main control board, display
panel, temperature and humidity sensor, surge
protection and voltage test board, and power
cables are free from aging on the surface.
Check that the transformer is intact and the
output voltage is within the normal range (24 V
AC± 10%).
Check that all circuit breakers are working
properly.
Check that the water sensor (optional
component) is securely installed.
Check that the Water sensor
securely installed and its probe is appropriately
located, Figure 6-4 shows the recommended
positions for installing Water sensors.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troublesho
oting
Replace the
components
or cables.
Check
whether the
power input
cable is
properly. If
no, reconnect
it. If yes,
replace the
transformer.
Replace the
circuit
breakers.
Secure the
water sensor.
a
(optional) is Locate it to
the
appropriate
position.
Remarks
with the
power off.
Perform the
operations
with the
power off.
Perform the
operations
with the
power on.
Perform the
operations
with the
power on.
Perform the
operations
with the
power off.
Perform the
operations
with the
power off.
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