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F-12

F-12

 

TROUBLESHOOTING & REPAIR

 

 

TROUBLESHOOTING GUIDE

Observe Safety Guidelines

 

 

detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

WELDING PROBLEMS

 

 

Poor arc striking when using semi-

1. Make sure the correct weld pro-

1.

Check reed switch CR3 for

automatic or automatic wire

cedures are being used.

 

proper operation. Switch

feeders.

(Electrode, Gas, Etc.)

 

should be normally open until

 

2. Check the welding cables for

 

weld current is established.

 

 

 

 

loose or faulty connections.

2.

The start board may be faulty.

 

 

 

Replace.

 

 

3.

The control board may be

 

 

 

faulty. Replace.

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.

IDEALARC DC-400

LINCOLN ®

ELECTRIC

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Lincoln Electric SVM 122-A service manual Welding Problems