Lincoln Electric RANGER IM612 Manuel d'utilisateur télécharger pdf (Page 32)

E-2

TROUBLESHOOTING

E-2

RANGER 8+ DIESEL

Observe all Safety Guidelines detailed throughout this manual

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.

CAUTION

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF

MISADJUSTMENTS(S)

RECOMMENDED

COURSE OF ACTION

A. No welder or output power.

B. Engine will not idle down to

low speed.

1. Open in miscellaneous leads.

2. Open lead in flashing or field

circuit.

3. Faulty rotor.

4. Faulty Potentiometer (R1).

5. Faulty stator Field winding.

6. Faulty Field rectifier (D2).

7. Faulty P.C. Board.

1. Idler switch on High Idle.

2. External load on welder or

auxiliary power.

3. Faulty idler solenoid.

4. Faulty P.C. Board.

1. Refer to wiring diagram &

check related leads.

2. Refer to wiring diagram and

check all related leads (200,

224, 200A, 200B, 201, 201A).

3. Lift brushes and check rotor

resistance between slip rings.

It should be approximately

4 ohms.

4. Replace with known good one.

5. Disconnect lead #9 at D2 and

check for continuity between

leads #9 and #7.

6. Replace with known good one.

7. Replace with known good one.

1. Set switch on Automatic Idler.

2. Remove all external loads and

short circuits.

3. Replace with known good one.

4. Replace P.C. Board with

known good one.

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Lincoln Electric RANGER IM612 Manuel d'utilisateur Page 32

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