Tweco 300 S Arcmaster - Manual (Page 37)

ARCMASTER ® 300 S
March 31, 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.