OM-950 Page 19
SECTION 6 − MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

YDisconnect power before maintaining.

3 Months

Replace
Unreadable
Labels
Repair Or
Replace
Cracked
Cables

6 Months 12 Months

Blow Out Or Vacuum
Inside,
During Heavy Service,
Clean Monthly
OR Lubricate Shunt Block
(See Section 6-2)

6-2. Lubricating Shunt Block And Anti-Noise Adjustment

802 248-D
YTurn Off welding power
source and disconnect input
power.
1 Wrapper
Remove wrapper.
2 Shunt Block
.Do not grease screw threads
on shunt block.
Apply light coating of high-tempera-
ture grease to shaded areas of both
shunt blocks. Turn amperage con-
trol handle to spread grease evenly.
3 Noise Adjustment Screws
If shunt block vibrates and
becomes noisy, tighten adjustment
screws 1/4 turn. Install wrapper,
turn On unit, and check for shunt
noise. Repeat procedure until noise
stops. Do not overtighten. Call your
nearest Factory Authorized Ser-
vice Agent if noise continues.
YInstall wrapper before
turning On power.
5/16, 3/8 in
2
3
2
Tools Needed:
1/2 in
1