Huawei NetCol8000-A Maintenance And Troubleshooting Manual page 10

Indoor Unit - Infrared Humidifier
Maintenance (1)
Inspection
No.
Method
On the main screen, choose Maint > Diagnostic Mode
> Enter. Start the humidifer. Check the three phase
currents of the humidifer contact (QC3 for a 50 kW unit
Operation
and QC9 for a 100 kW unit) in turn using a clamp meter.
1
inspection
Verify that the phase currents exist and difer by less
than 20%. The normal current range for a 50 kW
infrared humidifer is 7.5–9 A, and that for a 100 kW
infrared dehumidifer is 12–13.5 A.
Operation
2 Check that water can be smoothly injected.
inspection
Visual
3 Check that the water pan drains water properly.
inspection
Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved.
Operations Troubleshooting
Replace the
humidifer
If water can only be
injected to less than
1/3 of the humidifer,
remove the
water inlet valve to
check whether there
are blockages.
Close the main
humidifer water inlet.
Clean the foreign
matters in the water
pan.
Page 11