Lincoln Electric SVM176-A service manual Gun

F-4

TROUBLESHOOTING AND REPAIR

F-4

Observe Safety Guidelines detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

Major physical or electrical

FEEDING PROBLEMS

Contact the Lincoln Electric

damage is evident when the

Service Department at 1-888-

sheet metal covers are removed.

935-3877.

Motor does not run. No Voltage on

1. Check for power source output.

1. If OK, continue to Step 2.

the Voltmeter

2. Remote Sensing lead not

2. Check continuity of sense lead

connected to work or broken.

circuit. See Wiring Diagram.

If meter

reads backwards,

polarity is wrong. Reverse

polarity of power source. The

LN23P must run on Electrode

3. Control Cable to Adapter Kit

Negative.

3 Check continuity of the control

misconnected or defective.

cable.

4. Defective Adapter Kit

4. See the K350 Adapter test.

Motor does not run. OCV is

1. OCV must be at least 14 VDC.

1. Adjust power source output

indicated on the meter.

NOTE: Code 9085 OCV must be

accordingly. If OCV cannot be

adjusted below 50 vdc, Code

less than 50vdc (45Volts

9085 machines

must

be

on DC600).

upgraded with a new Control

Board.

2. Circuit Breaker tripped.

2. Reset breaker. If it trips again,

check the wire feed system for

restrictions. Perform the

Gun

Test.

the

trigger

circuit

3. Defective gun trigger or control

3. Check

continuity.

See

the

Wiring

leads.

Diagram.