Appendix D Suggestions and Error Corrections for Standard AC motor Drive|VFD-VL
D-4
DC capacity of main circuit
Maintenance
Period
Check Items Methods and Criterion
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
Maintenance
Period
Check Items Methods and Criterion
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
{
Transformer and reactor of main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there is any abnormal vibration
or peculiar smell
Visual, aural inspection and smell
{
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Call 1(800)985-6929 for Sales
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