User`s guide

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CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING
7.4.1
CleaningInstructions
When required to clean the inverter, follow the instructions
below:
a) Cooling System:
RemoveAC power from the inverter and wait 10 minutes.
Removeall dust from ventilationopenings byusing a plastic
brush or a soft cloth.
Remove dust accumulated on the heatsink fins and from
the blower blades with compressed air.
b) Electronic Boards:
RemoveAC power from the inverter and wait 10 minutes.
Disconnect the inverter cables, ensuring that they are
marked carefully to facilitate later reconnection.
Remove the keypad and the plastic cover (refer to chapter
3).
Remove all dust from the printed circuitboards by using an
anti-static soft brush and/or remove it with an ionized
compressed air gun,(for example:Charges Burtes IonGun
(non nuclear) Ref. A6030-6 DESCO).
COMPONENTS
PROBLEMS
CORRECTIVEACTIONS
Terminal blocks
Loose screws
Tighten them
Loose connectors
Blowers / Cooling
Blowers are dirty
Clean them
system
Abnormal acoustic noise
Replace the blowers
Blower is not running
Abnormal vibration
Dust in the air filters
Clean or replace them
Printed circuit boards
Dust, oil or moisture accumulation
Clean them and/or replace them
Smell
Replace them
Table 7.4
- Periodic inspection after start-up
NOTE!
Itis recommended toreplace theblowers after 40,000hours
of operation.
When the drive is stored fora long time, it is recommended
to power the drive up and keep it running for 1 hour every
year. Make sure to use a power supply with the following
characteristics for all models (200-240V or 380-480V):
220V, single-phase or three-phase, 50 Hz or 60 Hz (for
three-phase power supply),withoutconnecting the motor to
the drive output.After powering up the drive, keep it off for
24 hours before using it again.