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Control
loop
Whether the
control
components are in
poor contact;
whether the
terminal screw is
loose; whether the
control cable is
insulated and
cracked.
⚫
Clean the foreign matters on the
surface of control circuit and
connecting terminal;
⚫
Replace the damaged and corroded
control cable.
6.3
Replacement of wearing parts of power controller
6.3.1
Life of wearing part
The main vulnerable parts of power controller are cooling fan and electrolytic
capacitor for filter. The service life is closely related to the service environment and
maintenance. The general life time is as follows:
Device
Life time
【
note
】
Fan
≥5 years
Electrolytic capacitor
≥5 years
【
Note
】
:
The service life is the service time under the following conditions, and the
user can determine the replacement life according to the operation time.
1)
Ambient temperature: 40 ℃
2)
Load rate: 100%
3)
Operation rate: 24 hours / day
6.3.2
Cooling fan replacement
1)
Possible damage causes: bearing wear, blade aging.
2)
Criteria: whether there are cracks in the fan blade, whether there is
abnormal vibration sound when starting up, whether the fan blade operates
F
TM 1 TYPE SCR power controller
