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FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
3 Maintenance
Issue 04 (2018-01-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
23
Maintenance Item Operation
Check Standard
Troubleshooting
Humidifier water
refill of the 20 kW
air-cooled precision
air conditioner
Flip the manual
drainage button of
the humidifier to O:
normal
humidification.
If water can be
normally refilled
into the humidifier,
the water refill pipe
is unobstructed.
If the water refill is
abnormal:
If the water inlet
solenoid valve
cannot be
opened, perform
replacement by
following
instructions in
documents
delivered with
the air
conditioner.
If the water refill
pipe is blocked,
clean the pipe.
If the humidifier
cylinder is dirty
and the water
level inside the
cylinder is above
4/5, replace the
humidifier
cylinder by
following
instructions in
NetCol5000-A 20
kW Air-Cooled
In-Row Precision
Air Conditioner
User Manual
.
Thermal insulation
foam of the water
refill pipe,
drainpipe, and vapor
hose of the
humidifier
Check the thermal
insulation foam of
the water refill pipe,
drainpipe, and vapor
hose.
The thermal
insulation foam is
intact.
Replace the thermal
insulation foam if
the thermal
insulation foam is
damaged.
Interior of the
humidifier cylinder
Check the interior of
the humidifier
cylinder.
The interior is free
from scale.
If there is scale
on the interior of
the humidifier
cylinder, remove
the humidifier
cylinder and
clean it with 20%
acetic acid
Phase currents when
the humidifier is
working
Measure the phase
currents when the
humidifier is
working.
Each phase current
is no less than 1.2 A
(1/3 of the rated
current).