WEG CFW-11 RB User Manual page 73

Troubleshooting and Maintenance
Electronic boards:
Cut off the converter supply and wait 10 minutes.
„
Remove the dust accumulated on the boards using an anti-static brush or ionized compressed air (E.g.: Charges
„
Burtes Ion Gun (non nuclear) reference A6030-6DESCO).
If necessary, remove the boards from the converter.
„
Use always an ESD wrist strap.
„
Inspect the heatsink fins of the power units regularly verifying if there is any dirt accumulation that could impair
the converter cooling. Therefore, remove the power unit side cover.
1
Releasing the latches of the fan cover
1
Fan grill screws removal
1
6
Fan grill screws removal
6-6 | CFW-11 RB
2
Fan removal
(a) Frame size E (only model CFW110105T4O...RB...)
2
Fan removal
(b) Frame size E (except model CFW110105T4O...RB...)
2
Fan removal
(c) Frame sizes F and G (example on size F)
Figure 6.1: (a) to (c) - Removal of the heatsink fans
3
Cable disconnection
3
Cable disconnection
3
Cable disconnection