Lincoln Electric IM520-B Troubleshooting Guide, Problems Possible Areas Symptoms Misadjustments

Models: IM520-B

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TROUBLESHOOTING

Troubleshooting Guide

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

PROBLEMS

 

 

POSSIBLE AREAS OF

 

 

(SYMPTOMS)

 

 

MISADJUSTMENT(S)

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

Major Physical or Electrical

 

 

1. Contact The Lincoln Electric

 

 

Damage is Evident.

 

 

 

Service Dept. (216) 383-2531

 

 

 

 

 

 

 

 

 

Machine is Dead -

 

 

1.

Make certain that the input

 

 

No Output - No Fan

 

 

 

power switch is in the “ON”

 

 

No Displays.

 

 

 

position.

 

 

 

 

 

2.

Check the input voltage at the

 

 

 

 

 

 

machine. Input voltage must

 

 

 

 

 

 

match the rating plate and

 

 

 

 

 

 

reconnect the panel.

 

 

 

 

 

3.

Blown or missing fuses in

 

 

 

 

 

 

input line.

 

 

 

 

 

 

 

 

 

Fan runs - Display and control

 

 

1.

Check for proper input

 

 

panel dark. No output from

 

 

 

voltages. As per nameplate

 

 

machine in either Stick or TIG

 

 

 

and reconnect panel.

 

 

modes.

 

 

 

 

 

 

 

 

 

 

 

 

 

The voltmeter reads “00” in Stick

 

 

1.

Inspect to assure that the arc

 

 

Mode, and there is no output from

 

 

 

start switch is in the on

 

 

the machine when in the TIG

 

 

 

(closed) position when

 

 

2-Step Mode.

 

 

 

welding in the TIG Mode.

 

 

 

 

 

 

 

 

 

Machine does not respond (no gas

 

 

1.

Machine MUST be in one of

 

 

flow, no high frequency and no

 

 

 

the TIG Modes.

 

 

open circuit voltage) when arc

 

 

 

 

 

 

switch or amptrol is activated -

 

 

2.

The arc start switch or amptrol

 

 

displays and fan working.

 

 

 

may be defective. Check for

 

 

 

 

 

 

continuity between pins “D”

 

 

 

 

 

 

and “E” on cable connector

 

 

 

 

 

 

when arc switch or amptrol is

 

 

 

 

 

 

activated.

 

 

 

 

 

 

 

 

 

115VAC Receptacle not working

 

 

1.

Check for 115VAC at

 

 

properly (voltage is below 108VAC).

 

 

 

receptacle - if low (below

 

 

Machine has welding output - fan is

 

 

 

108VAC), then check input

 

 

running.

 

 

 

voltage to machine.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

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Lincoln Electric IM520-B manual Troubleshooting Guide, Problems Possible Areas Symptoms Misadjustments