Appendix D Suggestions and Error Corrections for Standard AC motor Drive|VFD-VL
D-5
Magnetic contactor and relay of main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there are any loose screws Visual and aural inspection
{
If the contact works correctly Visual inspection
{
Printed circuit board and connector of main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there are any loose screws and
connectors
Tighten the screws and press the
connectors firmly in place.
{
If there is any peculiar smell and
color change
Visual and smell inspection
{
If there is any crack, damage,
deformation or corrosion
Visual inspection
{
If there is any liquid is leaked or
deformation in capacity
Visual inspection
{
Cooling fan of cooling system
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there is any abnormal sound or
vibration
Visual, aural inspection and turn the
fan with hand (turn off the power
before operation) to see if it rotates
smoothly
{
If there is any loose screw Tighten the screw
{
If there is any color change due to
overheat
Change fan
{
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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