Tweco 300 TS Arcmaster(Feb2006) - Manual (Page 44)

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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.
The unit should be wiped clean as necessary with solvents that are recommended for cleaning
electrical apparatus. Turn Power Switch to OFF before proceeding. Internal cleaning of the unit
should be done every 6 months by an authorized Thermal Arc Service Center to remove any
accumulated dirt and dust. This may need to be done more frequently under exceptionally
dirty conditions.
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.