Delta 1.07 VFD-D D User Manual download pdf (Page 128)

Chapter 6 Fault Codes and Descriptions |DD Series

6-7

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

Maintenance

Period

Check Items Methods and Criterion

Daily

Half

Year

One

Year

Check the ambient temperature,

humidity, vibration and see if there

are any dust, gas, oil or water drops

Visual inspection and measurement with

equipment with standard specification

{

If there are any dangerous objects Visual inspection

{

 Voltage

Maintenance

Period

Check Items Methods and Criterion

Daily

Half

Year

One

Year

Check if the voltage of main circuit

and control circuit is correct

Measure with multimeter with standard

specification

{

 Keypad

Maintenance

Period

Check Items Methods and Criterion

Daily

Half

Year

One

Year

Is the display clear for reading Visual inspection

{

Any missing characters Visual inspection

{

 Mechanical parts

Maintenance

Period

Check Items Methods and Criterion

Daily

Half

Year

One

Year

If there is any abnormal sound or

vibration

Visual and aural inspection

{

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Delta 1.07 VFD-D D User Manual Page 128

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