7-4
multi-meter
Main Circuit – Transformer and Reactor
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Is there any abnormal vibration or strange odor? Visual and auditory
inspection
○
Main Circuit – Electromagnetic Contactor and Relay
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Is there any vibration sound during operation? Auditory inspection ○
Does the contactor have good contact property? Visual inspection ○
Control Circuit – Control PCB and Connectors
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Are the screws and connectors loose? Fastening
○
Is the part with a strange odor or discolored? By smelling, visual
inspection
○
Is there any cracked damaged, deformed, or
corroded part?
Visual inspection
○
Does the capacitor have any trace of leakage or
deformation?
Visual inspection
○
Cooling System – Cooling Fan
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Is there any abnormal sound or vibration?
Auditory and visual
inspection by manual
rotating the fan. (It is
necessary to disconnect
the power)
○
Are the bolts loose? Fastening
○
Id the part discolored due to over heating? Visual inspection
○
Cooling System – Ventilation Tunnel
Inspection Item Inspection Method Inspection Period
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