Hobart Welding Products OM-949 manual Routine Maintenance, Months

SECTION 5 − MAINTENANCE & TROUBLESHOOTING

5-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace

Unreadable

Labels

Repair Or

Replace

Cracked

Cables

6 Months

12 Months

Blow Out Or Vacuum

Inside,

ORDuring Heavy Service,

Clean Monthly

Lubricate Shunt Block

(See Section 5-2)

5-2. Lubricating Shunt Block And Anti-Noise Adjustment

1

2

Tools Needed:

1/2 in

5/16, 3/8 in

YTurn Off welding power source and disconnect input power.

1Wrapper Remove wrapper.

2Shunt 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

2becomes 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.

Y Install wrapper before

3turning On power.

803 564-B

OM-949 Page 15