Huawei NetCol5000-C User Manual page 60

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
4.
5.
6.
7.
8.
9.
If the NetCol5000-C drains water from the top and the ambient dew-point temperature
exceeds the upper threshold, the following symptoms occur:
1. When the NetCol5000-C is running, a large amount of condensate water is generated and
the float floats, then condensate pump works.
2. The speed of generating condensate water is faster than the drainage speed of the water
pump. The high float floats, the full water alarm is generated, and the drain abnormal alarm
may be generated. In this case, the NetCol5000-C shuts down the fan and chilled water valve
to enter standby mode.
3. The water pump drain condensate water until the high float drops. The NetCol5000-C
restarts.
4. If the equipment room is overhumidity, steps 1 to 3 are repeatedly performed until the
humidity in the equipment room within the acceptable range, as shown in
Issue 02 (2013-12-10)
Check whether alarms are generated after the NetCol5000-C is running for about 3
minutes.
− If alarms are generated, identify the causes and clear the alarms by following the
instructions provided in
− If no alarm is generated, choose Running > Device Details > T/H Sensor referring
to 5.9.3 Device Details
inlet temperature is 4° C higher than the water outlet temperature, check whether the
water inlet and outlet pipes are correctly connected. If yes, check whether the water
inlet and outlet temperature sensors are correctly connected. If not, connect the water
inlet and outlet temperature sensors correctly.
Choose Maint > Diagnostic Mode referring to
fan to maximum, which is 30% by default. Check whether any alarm is generated. If
alarms are generated, identify the causes and clear the alarms by following the
instructions provided in
Rotate the chilled water valve handle to the maximum openness. If the handle cannot be
rotated to the maximum openness, see chilled water valve-related contents in
Troubleshooting.
Enter Running > Device Details > Drain Device referring to
raise the low float for 5s to start water pump 1 or 2. If no water pump is started, rectify
the fault by following the instructions provided
float and raise the high float for 5s to start both water pumps 1 and 2, the abnormal
drainage alarm appeared, rectify the fault by following the instructions provided in
Alarm Reference.If no water pump is started or only one water pump is started, rectify
the fault by following the instructions provided
Exit diagnostic mode.
Make sure that equipment running trouble-free for more than 30 min after
commissioning.
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6.3 Alarm Reference.
to query the water inlet and outlet temperature. If the water
6.3 Alarm Reference.
in6.4
4 Power-On Commissioning
5.13.1 Diagnostic Mode, and set Indoor
5.9.3 Device Details
in6.4 Troubleshooting. Drop the low
Troubleshooting.
Figure
6.4
and
6.3
4-2.
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