6
6-10 | CFW-11M RB
Troubleshooting and Maintenance
6.5.1 Cleaning Instructions
When it becomes necessary to clean the converter, follow the instructions below:
Ventilation system:
;
Cut off the converter supply and wait 10 minutes.
;
Remove the dust accumulated at the ventilation inlets with a plastic brush or a flannel.
;
Remove the dust accumulated on the heatsink fins and on fan blades using compressed air.
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.
JANELAS PARA
LIMPEZA DOS
DISSIPADORES
DISSIPADORES
Heatsinks
Heatsink fin
cleaning
openings
Figure 6.3 -
Covers to get access for inspection/cleaning of the heatsink fins
