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5. Inspection and Maintenance
Inspection and Maintenance
In order to avoid the malfunction and security problems resulting from aging of the devices which is
caused by environmental factors such as temperature, oil fog, dust, vibration, humidity and etc.,
‘
daily inspection
’
and
‘
periodical inspection
’
are necessary.
Note: Only fully-qualified electrical professional personnel can carry out installation, wiring, dismounting and
maintenance.
5.1 Daily inspection
1. Check whether the surrounding conditions are normal (including temperature, humidity, dust
density and etc.) at the installment place.
2. Check whether the power supply voltage is normal (the voltages among R, S and T).
3. Check whether wiring is ok (whether the external wiring for the main-circuit board and the
control-board terminal is loose).
4. Check whether the cooling system is abnormal (Whether there
’
s any abnormal acoustic noise
when operating. whether the wiring is ok.).
5. Check the indicating lamp (Whether the control-board indicating LED lamp, the operation panel
indicating LED lamp and the operation panel screen LED are normal).
6. Check whether the expected performance is maintained.
7. Check whether there
’
s any abnormal vibration, acoustic noise or smell during running.
8. Check whether there is liquid leaking from the filter capacitors.
5.2 Periodical inspection (during stop)
1. Check the connector and wiring (whether the connector and wiring between the main-circuit
board and control board is ok).
2. Check whether components on the main-circuit board and the control board are overheated.
3. Check whether the electrolytic capacitors on the main-circuit board and control board have liquid
leaking out.
4. Check the IGBT module on the main-circuit board.
5. Clean the dust and contaminants on the circuit board.
6. Check the insulation resistor.
7. Check whether the cooling system is abnormal (Whether the wiring is firm; clean the air filter,
etc).
8. Check screws and belts.
9. Check the external wires and the terminal banks for damage.
5.3 Regular replacement of parts (components)
Items
The corresponding
period for
replacement
Description
Cooling fan
2 years
For the axle of a fan, the standard lifetime is about 10~35
thousand hours. With reference to the time of 24 hours one day,
it is sure that the fan should be replaced every 2 years .
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