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F-12

 

 

 

 

 

 

F-12

TROUBLESHOOTING & REPAIR

 

 

 

Observe Safety Guidelines

 

 

 

 

TROUBLESHOOTING GUIDE

detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

 

RECOMMENDED

 

 

(SYMPTOMS)

MISADJUSTMENT(S)

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

WELDING PROBLEMS

 

 

 

 

The arc starting is not satisfactory.

1. The Hot Start Control may not

1. Check the Hot Start Control

 

be set correctly for the process

(R2) and associated leads and

 

being used.

 

 

connections.

Note: The

Arc

 

2. Make sure the Output Control is

Force Control

and Hot

Start

 

Control are interchangeable and

 

adjusted

correctly

for

the

 

may be switched to aid in trou-

 

process being used.

 

 

 

 

 

bleshooting.

See the Wiring

 

 

 

 

 

 

 

 

 

 

Diagram.

 

 

 

 

 

 

 

 

2. The Weld Control Board may be

 

 

 

 

 

faulty.

 

 

 

 

 

 

 

When stick welding the electrode

1. The Arc Force Control may not

1. Check the Arc Force Control

“stubs”.

be set correctly for the process

(R3) and associated leads and

 

being used. Increase the Arc

connections.

Note: The

Arc

 

Force.

 

 

 

Force Control and Hot Start

 

2. Make sure the Output Control is

Control are interchangeable and

 

may be switched to aid in trou-

 

adjusted

correctly

for

the

 

bleshooting.

See the Wiring

 

process being used.

 

 

 

 

 

Diagram.

 

 

 

 

 

 

 

 

 

 

 

 

3. Check the

welding

cables

for

2. The Weld Control Board may be

 

loose or faulty connections.

 

 

 

faulty.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-800-833-9353.

MULTI-WELD 350

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Lincoln Electric SVM151-A service manual Troubleshooting & Repair