Maintenance And Inspectations - Delta Electronics VFD-DD Series User Manual

6.2 Maintenance and Inspections
Before the check-up, always turn off the AC input power and remove the cover. Wait at least 10 minutes
after all display lamps have gone out, and then confirm that the capacitors have fully discharged by
measuring the voltage between DC+ and DC-. The voltage between DC+ and DC-should be less than
25VDC.
Ambient environment
Check Items
Check the ambient temperature,
humidity, vibration and see if there
are any dust, gas, oil or water drops
If there are any dangerous objects
Voltage
Check Items
Check if the voltage of main circuit
and control circuit is correct
Keypad
Check Items
Is the display clear for reading
Any missing characters
Mechanical parts
Check Items
If there is any abnormal sound or
vibration
Chapter 6 Fault Codes and Descriptions |DD Series
Methods and Criterion
Visual inspection and measurement with
equipment with standard specification
Visual inspection
Methods and Criterion
Measure with multimeter with standard
specification
Methods and Criterion
Visual inspection
Visual inspection
Methods and Criterion
Visual and aural inspection
6-7
Maintenance
Period
Half One
Daily
Year Year
Maintenance
Period
Half One
Daily
Year Year
Maintenance
Period
Half One
Daily
Year Year
Maintenance
Period
Half One
Daily
Year Year