Delta Electronics AC Motor Drive VFD-E - Manual (Page 232)

Chapter 6 Fault Code Information and Maintenance|
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 6-11
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 change of color due
to overheating
Change fan {
Ventilation channel of cooling system
Maintenance
Period
Check Items Methods and Criterion
Daily
Half
Year
One
Year
If there is any obstruction in the
heat sink, air intake or air outlet
Visual inspection {