Delta VFD-L-I Series, User Manual

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Chapter 7 Maintenance and Inspections
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VFD-L-I Series
Revision July 2009, SW V1.1 7-3
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
Check parts for deformity or
damaged
Visual inspection
{
If there is any color change
caused by overheating
Visual inspection
{
Check for dust and 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 changed color change due
to overheating or ageing
Visual inspection
NOTE: Please ignore the color
change of copper plate
{
Check for dust and dirt Visual inspection
{
„
Terminals and wiring of main circuit
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If the wiring shows change of
color change or deformation due
to overheat
Visual inspection
{
If the insulation of wiring is
damaged or the color has
changed
Visual inspection
{
If there is any damage Visual inspection
{