Chapter 8 Maintenance and Inspections|VFD-B Series

„ Printed circuit board and connector of main circuit

Check Items

Methods and Criterion

Maintenance

Period

Daily

Half

Year

One

Year

If there are any loose screws and Tighten the screws and press the

connectors

connectors firmly in place.

{

If there is any peculiar smell and

color change

Visual 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

Check Items

If there is any abnormal sound or

vibration

If there is any loose screw

Methods and Criterion

Maintenance

Period

Daily

Half

Year

One

Year

Visual, aural inspection and turn the

fan with hand (turn off the power

before operation) to see if it rotates

{

smoothly

Tighten the screw

{

If there is any color change due to

overheat

Change fan

{

„ Ventilation channel of cooling system

Check Items

Methods and Criterion

If there is any obstruction in the

heat sink, air intake or air outlet

Visual inspection

Maintenance

Period

Daily

Half

Year

One

Year

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Revision July 2008, BE16, SW V4.08 & V5.00

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