13

TROUBLESHOOTING

13

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENTS(S)

COURSE OF ACTION

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

Machine is Dead -

1.

Make certain that the input

No Output - No Fan

 

power switch is in the “ON”

 

 

position and machine is plugged in.

 

2. Check the input voltage at the

 

 

machine. Input voltage must

 

 

match the rating plate and voltage

 

 

connection. Refer to Reconnect

 

 

Procedure in the Installation sec-

 

 

tion of this manual.

 

3.

Blown or missing fuses in

 

 

input line.

 

 

 

Fan runs - No output from machine

1.

Check for proper input voltages

in either Stick or TIG modes.

 

per nameplate and voltage

 

 

reconnection.

 

2.

Check to make sure polarity

 

 

switch is not in between two

 

 

positions.

 

 

 

Fan runs - No output from machine

1.

Welding application may have

in either Stick or TIG modes and the

 

exceed the recommended duty

yellow light on the control panel is

 

cycle. Allow the unit to run until

on.

 

the fan cools the unit and the

 

 

yellow light goes out.

 

 

 

Machine does not respond (no gas

1.

Machine MUST be in

flow, no high frequency and no open

 

the TIG Mode.

circuit voltage) when arc start switch

 

 

or Amptrol is activated - fan is work-

2.

The Amptrol may be defective.

ing.

 

Check for continuity between

 

 

pins “D” and “E” on cable con-

 

 

nector when Amptrol is

 

 

depressed.

 

 

 

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.

SQUARE WAVE TIG 175

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Lincoln Electric IM605 manual Possible Areas, Symptoms, Course of Action