Chapter 8 Maintenance and Inspections|VFD-M-D Series
Revision Jan. 2007, MDE2, SW V1.05 8-3
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If any part is deformed or
damaged
Visual inspection
If there is any color change by
overheating
Visual inspection
If there is any dust or dirt Visual inspection
Main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there are any loose or missing
screws
Tighten or replace the screw
If machine or insulator is
deformed, cracked, damaged or
with color change due to
overheating or ageing
Visual inspection
NOTE: Please ignore the color
change of copper plate
If there is any dust or dirt Visual inspection
Terminals and wiring of main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If the wiring is color change or
deformation due to overheat
Visual inspection
If the insulator of wiring is
damaged or color change
Visual inspection
If there is any damage Visual inspection
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