Cleaning Instructions - WEG CFW-09 User Manual

CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING

7.4.1 Cleaning Instructions

236
Notes:
(1) It is recommended to replace the blowers after each 40.000 hours of
operation.
(2) Check the capacitors every six months. It is recommended to replace
them after five years of operation.
(3) If the inverter is stored for long periods, we recommend to power it up once
a year during 1 hour. For 220-230 V and 380-480 V models apply supply
voltage of approximately 220 Vac, three-phase or single-phase input, 50 or
60 Hz, without connecting motor at output. After this energization, wait 24
hours before installing it. For 500-600 V, 500-690 V and 660-690 V models
use the same procedure applying a voltage between 300 V and 330 Vac to
the inverter input.
When necessary clean the CFW-09 following the instructions below:
Cooling system:
Remove AC power from the inverter and wait 10 minutes;
Remove all dust from the ventilation openings by using a plastic
bush or a soft cloth;
Remove dust accumulated on the heat sink fins and from the blower
blades with compressed air.
Electronic Boards:
Remove AC power form the inverter and wait 10 minutes;
Remove all dust from the printed circuit boards by using an anti-static
soft brush or remove it with an ionized compressed air gun;
If necessary, remove the PCBs from the inverter;
Always use a ground strap.