Tweco 400 MST Arc Master - Manual (Page 27)

5
ROUTINE MAINTENANCE
5 – 1
ROUTINE MAINTENANCE The only routine maintenance required for the
power supply is a thorough cleaning and inspec-
tion, 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 (refer to
'Opening the Enclosure' section 9.1.1) 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 clean-
ing. Blowing air into the unit can cause metal parti-
cles to interfere with sensitive electrical
components and cause damage to the unit.