E-8

 

TROUBLESHOOTING

E-8

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

 

 

 

 

 

PROBLEMS

Digital Ammeter not working properly 1.

The meter PC board may not be

or erratic display.

 

receiving the auxiliary or sensing

 

 

voltages. Check plug P3 and

 

 

plugs P12 & P13. See wiring

 

 

diagram.

 

2.

The current feedback circuit may

 

 

be faulty. From the shunt to the

 

 

control board. See wiring dia-

 

 

gram.

 

3.

The Digital meter PC board may

 

 

be faulty.

 

 

 

Analog Meters not reading, or not

1.

The meters may not be receiving

reading correctly.

 

voltage or current feedback sig-

 

 

nals. Make sure plug P3 is

 

 

securely plugged in the control

 

 

board and plug J14 (in-line con-

 

 

nector) is securely seated in the

 

 

plug assembly from the control

 

 

board.

 

2.

Check the current feedback and

 

 

voltage feedback circuits. See

 

 

wiring diagram.

 

3.

The meter(s) may be defective.

220VAC receptacle not working.

1.

Check the circuit breaker. Reset

(50/60 Hz Europe and Export mod-

 

if necessary.

els only)

 

 

 

2.

Check for broken or loose con-

 

 

nections in the 220VAC circuit.

 

 

See wiring diagram.

Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

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Lincoln Electric IM602-A manual Troubleshooting