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F-13

TROUBLESHOOTING AND REPAIR

F-13

Observe all Safety Guidelines detailed throughout this manual.

PROBLEMS

 

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

 

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

FUNCTION PROBLEMS (Continued)

 

 

 

 

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When the gun trigger is activated

1. Make sure the gas supply is

the wire feeds and arc voltage is

adequate and connected cor-

present but gas does not flow.

rectly to the LN-10.

The preset arc voltage does not

1.

Make sure the power source is

match the actual voltage.

 

set for remote voltage control.

 

2.

Make sure the DIP switches on

 

 

the LN-10 control board are set

 

 

correctly for the power source

 

 

being used.

The preset WFS does not match

1.

Check the wiring and connec-

the actual WFS.

 

tions between the tachometer

 

 

and the control board. See the

 

 

Wiring Diagram.

 

2.

Make sure the DIP switches on

 

 

the LN-10 control board are set

 

 

correctly.

The K1449-1 remote control is not 1. Make certain the K1449-1 is con-

functioning when the Procedure nected properly to the LN-10. LED is in the REMOTE position.

2. The K1449-1 remote control may be faulty.

1.Perform the Gas Solenoid Test.

2.The control board may be faulty.

1.The control board may be faulty.

2.The control cable between the power source and the LN-10 may be defective.

1.Perform the Tach Adjustment and Feedback Test.

2.The control board may be faulty.

1.Check for continuity between the pins of the Amphenol con- nector on the left side of the bottom of the control box and the plug that goes into Molex connector J4 on the control P.C.

board. See The Wiring Diagram.

2.The control board may be faulty.

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CAUTION

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

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LN-10

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Lincoln Electric SVM154-A service manual Perform the Gas Solenoid Test

SVM154-A specifications

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