Huawei FusionCol8000-E240 User Manual page 150

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
Fault
Type
The
airflow
volume is
insufficien
t.
Vibration
Abnormal
noise
Electric Hazards
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Issue 02 (2021-04-15)
Possible Cause
(when the motor or
electronic system is
overheated).
The fan rotates
slowly.
The air channel is
blocked.
The pressure loss is
different from the
designed value.
Imbalance
Bearing damage or
wear
Fan blade friction/
collision
The fan is operating
in the stall zone
(applicable to an
axial fan).
The concentricity of
the air intake ring is
incorrect (applicable
to a centrifugal fan).
Electrical components can only be operated by professional electricians or
persons familiar with electricity, or under the supervision of an electrician.
Comply with five electrical safety regulations.
Do not operate when the device is powered on. Even after the device is
powered off, the intermediate circuit is still energized. Wait at least 3 minutes.
To disconnect electrical connections safely, take other measures if necessary.
For all operations on energized parts or circuits, there must always be two
persons present, so that one person can cut off the power supply in the case
of emergency.
The ventilation device can only be connected to a circuit with an omnipolar
isolation switch.
Copyright © Huawei Technologies Co., Ltd.
Solution
Check the ambient temperature of the fan.
Check the installation space (air speed
above the heat source).
Check whether the fan rotates slowly.
Check whether the airflow is smooth
(intake/exhaust air damper and air filter).
The fan blade is blocked or polluted.
Check whether the resistance of the air
supply duct is too large.
Check whether the fan blades are
damaged, polluted, or frozen.
Replace the bearing.
Clear foreign matters or dirt in the fan if
necessary.
Check whether the airflow is smooth
(intake/exhaust air damper and air filter).
Observe the installation precautions.
8 System Maintenance
141