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F-5

F-5

 

TROUBLESHOOTING & REPAIR

 

TROUBLESHOOTING GUIDE

Observe Safety Guidelines

 

 

detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

 

FUNCTION PROBLEMS

 

 

 

 

 

All the status lights begin to blink

1.

Make sure the PRO-CUT 80 is

1.

Perform

the

Primary Power

within 5 seconds of power up.

 

reconnected correctly for the

 

Board Resistance

Test and

 

 

input voltage being applied. Be

 

Capacitor Voltage Test.

 

 

sure to remove input power

2. Perform the Input Rectifier

 

 

and wait at least one minute

 

 

 

Test.

 

 

 

 

 

before changing the position

 

 

 

 

 

 

 

 

 

 

 

 

 

of the input voltage range

3.

The control board may be

 

 

switch.

 

 

 

faulty. Replace.

 

 

 

 

 

 

4. The primary power board may

 

 

 

 

 

 

be faulty. Replace.

 

 

 

 

 

The machine powers up properly,

1. Make sure the torch is connect-

1.

Perform the Auxiliary Trans-

but there is no response when the

 

ed properly to the PRO-CUT 80

 

former Test.

 

 

gun trigger is pulled. Only the

 

machine.

 

 

2.

Perform

the

Trigger Circuit

power LED is lit.

 

 

 

 

2. Make sure the air supply is con-

 

Test.

 

 

 

 

 

 

 

 

 

 

nected and operating properly.

3.

Perform

the

Gas

Solenoid

 

 

 

 

 

 

3.

Make sure the torch head con-

 

Test.

 

 

 

 

 

sumable parts are in place and

4. Perform the Torch Continuity

 

 

in good condition.

Replace if

 

 

 

and Solenoid Test.

 

 

 

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5. The control

board

may be

 

 

 

 

 

 

faulty. Replace.

 

 

 

 

 

 

6. The output power board may

 

 

 

 

 

 

be faulty. Perform the Output

 

 

 

 

 

 

Board Resistance Test.

 

 

 

 

 

When the torch trigger is pulled, air

1. Make sure

the torch consum-

1.

Perform the Torch Continuity

begins to flow; but no pilot arc is

 

ables are in place and in good

 

and Solenoid Test.

 

established.

 

condition.

Replace if neces-

2.

Perform

the

Low

Voltage

 

 

sary.

 

 

 

 

 

 

 

Circuit Test.

 

 

 

 

 

 

 

 

 

 

 

2.

Make sure

the air

pressure is

3. The output board may be faulty.

 

 

set at 70 psi (448 kPa.)

 

 

 

Perform

the

Output Board

 

 

 

 

 

 

 

3.

Make sure there are no kinks or

 

Resistance Test.

 

 

 

restrictions

for air

flow in the

4. The control board may be

 

 

torch cable.

 

 

 

 

 

 

 

faulty. Replace.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-800-833-9353.

PRO-CUT 80

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Lincoln Electric SVM146-A service manual Function Problems

SVM146-A specifications

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