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SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Only qualified personnel should perform
this maintenance.
• Turn the input power OFF at the discon-
nect switch or fuse box before working
on this equipment.
• Do not touch electrically hot parts.
ROUTINE AND PERIODIC
MAINTENANCE
To avoid receiving an electric shock, keep electrode
holders and cable insulation in good condition.
1. Disconnect power supply lines to the machine before
performing periodic maintenance.
2. In extremely dusty locations, dirt may clog the air
channels, causing the welder to run hot. Periodically
blow out dust and dirt from the inside of the machine
with a low pressure air system. Be sure to clean the
following components thoroughly. See
Figure D.1
for their location.
• Main transformer
• Output studs
• Polarity switch
• Rectifier assembly
• Control box assembly
3. Dirt and dust may also accumulate on the remote
control terminal strips. Wipe or blow off the terminal
strips regularly, especially in damp locations.
4. Inspect the welder output terminals and control
cables for fraying, cuts, and bare spots.
5. The fan motor has sealed ball bearings and requires
no maintenance.
MAINTENANCE
D-2 D-2
IDEALARC CV-400
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WARNING
WARNING