Delta VFD-E Series, Руководство пользователя

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Appendix F Suggestions and Fault Corrections for Standard AC Motor Drives 
F-3
Main circuit
Check Items Methods and Criterion
Maintenance Period
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
Check Items Methods and Criterion
Maintenance Period
Daily
Half
Year
One
Year
If the terminal or the plate 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
○
DC capacity of main circuit
Check Items Methods and Criterion
Maintenance Period
Daily
Half
Year
One
Year
If there is any leak of liquid, color
change, crack or deformation
Visual inspection
○
If the safety valve is not removed? If
valve is inflated?
Visual inspection
○
Measure static capacity when
required
○
Resistor of main circuit
Check Items Methods and Criterion
Maintenance Period
Daily
Half
Year
One
Year
If there is any peculiar smell or
insulator cracks due to overheat
Visual inspection, smell
○
If there is any disconnection Visual inspection
○
If connection is damaged?
Measure with multimeter
with standard specification
○