Delta VFD-ED Series User Manual

Chapter 15 Maintenance and TroubleshootingVFD-ED
15-4
Main circuit
Items to Check Methods and Criterion
Maintenance Period
Daily Half Year One Year
Check for any loose or missing bolts Securely tighten

Check for machine or insulator deformation,
crack, damage or color change due to
overheating or ageing
Visual inspection

Check for any dust or dirt Visual inspection

Main circuit terminals and wiring
Items to Check Methods and Criterion
Maintenance Period
Daily Half Year One Year
Check the terminal and copper plate for
color change or deformation due to
overheating
Visual inspection

Check for damage to the wiring insulation
or color change
Visual inspection

Main circuit terminal block
Items to Check Methods and Criterion
Maintenance Period
Daily Half Year One Year
Check for any damage Visual inspection

Main circuit filter capacitor
Items to Check Methods and Criterion
Maintenance Period
Daily Half Year One Year
Check for any liquid leaks, color change,
crack or buckling of the exterior cover
Visual inspection

Check if the safety valve is not removed or
if the valve is obviously expanded
Visual inspection

Measure static capacity when required -

Main circuit resistor
Items to Check Methods and Criterion
Maintenance Period
Daily Half Year One Year
Check for any odors or insulation cracks
due to overheating
Visual and audible inspection

Check for any disconnections Visual inspection

Check for damaged connections
Measure with multimeter with
standard specifications


Delta VFD-ED Series Specifications

General

Brand	Delta
Model	VFD-ED Series
Category	DC Drives
Language	English