Lincoln Electric IM904 manual Troubleshooting

Models: IM904

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E-5

TROUBLESHOOTING

E-5

 

 

 

 

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

 

POSSIBLE

 

 

 

(SYMPTOMS)

 

 

 

CAUSE

 

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

 

 

 

 

 

 

 

Excessive weld spatter. Arc sounds

 

 

 

1. Check the Arc Sense leads for

 

 

 

 

 

 

 

and looks like a standard MIG

 

 

 

loose or faulty connections.

 

 

 

process.

 

 

 

 

 

 

 

 

 

 

 

2. Make sure the Arc Sense

 

 

 

 

 

 

 

“WORK” lead is as close as pos-

 

 

 

 

 

 

 

sible to the welding arc.

 

 

 

 

 

 

 

3. Make sure the machine and wire

 

 

 

 

 

 

 

feed settings are correct for the

 

 

 

 

 

 

 

process and wire being used.

 

 

 

 

 

 

 

 

 

 

 

The wire burns back to the tip.

 

 

 

1.Remove P1 from the control

 

 

 

 

 

 

 

board if the machine noodle

 

 

 

 

 

 

 

welds, the current sense board is

 

 

 

 

 

 

 

bad.

 

 

 

 

 

 

 

 

 

 

 

Poor welding, weld settings drift or

 

 

 

1. Make sure machine settings are

 

 

 

output power is low.

 

 

 

correct for welding process being

 

 

 

 

 

 

 

used.

 

 

 

 

 

 

 

2. Check welding cables for loose

 

 

 

 

 

 

 

or faulty connections.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED COURSE OF ACTION

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

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.

INVERTEC STT II (CE)

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Lincoln Electric IM904 manual Troubleshooting