Delta Electronics VFD-M Series User Manual page 141

Chapter 6 Fault Code Information and Maintenance|
Cooling fan of cooling system
Check Items
If there is any abnormal sound or
vibration
If there is any loose screw
If there is any change of color due
to overheating
Ventilation channel of cooling system
Check Items
If there is any obstruction in the
heat sink, air intake or air outlet
6-10
Methods and Criterion
Visual, aural inspection and turn the
fan with hand (turn off the power
before operation) to see if it rotates
smoothly
Tighten the screw
Change fan
Methods and Criterion
Visual inspection
Maintenance
Period
Daily
Maintenance
Period
Daily
Revision May 2008, ME14, SW V3.04
Half One
Year Year
Half One
Year Year