Tweco 300 DC Arcmaster - Manual (Page 49)

ARCMASTER 300 ACDC
February 22, 2006 9-1
SECTION 9:
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
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 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
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.