7. Recommended Operations for Customers and Troubleshooting
7-3
Main Circuit
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Are bolts loose or falling off? Fastening ○
Are the machine and insulators deformed,
cracked, damaged, or discolored due to
over-heating and aging?
Visual inspection
○
Does the part have any dust or stain? Visual inspection
○
Main Circuit – Terminals and Wiring
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Are the terminals and copper plates discolored or
deformed due to over heating?
Visual inspection
○
Is the shield layer of the wire damaged or
discolored?
Visual inspection
○
Main Circuit – Terminal Block
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Is it damaged? Visual inspection ○
Main Circuit - Filtering Capacitor
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Is there any leakage, discoloring, cracking, or
swollen housing?
Visual inspection ○
Does the safety valve not come out? Is the valve
body notably swollen?
Visual inspection ○
Measure the static capacitance as required. ○
Main Circuit - Resistor
Inspection Period
Inspection Item Inspection Method
Daily Half
year
One
year
Does the insulator have strange odor or crack due
to over heating?
Visual and auditory
inspection
○
Is the wire broken? Visual inspection ○
Is the connection joint damaged? Measurement by ○
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