Tweco 185TSW DC CC - Manual (Page 42)

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9.0 ROUTINE MAINTENANCE
The only routine maintenance required for the power supply is a thorough cleaning and inspection,
with the frequency depending on the usage and the operating environment.
WARNING 8
Disconnect primary power at the source before opening the enclosure. Wait at least two
minutes before opening the enclosure to allow the primary capacitors to discharge.
To clean the unit, open the enclosure (please refer to Section 8.01.01, Opening the Enclosure in the
185TSW Service Manual P/N 430429-512) and use a vacuum cleaner to remove any accumulated
dirt and dust. The unit should also be wiped clean, if necessary; with solvents that are
recommended for cleaning electrical apparatus.
CAUTION 5
Do not blow air into the power supply during cleaning. Blowing air into the unit can
cause metal particles to interfere with sensitive electrical components and cause
damage to the unit.