D-1

MAINTENANCE

D-1

 

 

 

WARNING

ELECTRIC SHOCK can kill.

Have an electrician install and ser- vice this equipment.

Turn the input power off at the fuse box before working on equipment.

Do not touch electrically hot parts.

ROUTINE MAINTENANCE

1.The fan motor has sealed bearings which require no service.

2.In extremely dusty locations, dirt may clog the air channels causing the welder to run hot. Blow out the machine at regular intervals.

POCKET AMPTROL

Routine cleaning should be the only maintenance required. The probe tip should be kept in condition to provide sharp edges at the ends to assure penetration of heavy oxide coatings on the work piece. A blunted tip could result in giving different welding currents for a given dial setting.

POWER RECTIFIER REPLACEMENT

Refer to the troubleshooting section “Power Rectifier Bridge Assembly Checking Procedure” if a rectifier fail- ure is suspected

NOTE: Since proper material and correct assembly procedures are critical, field disassembly of the power rectifier bridge sections can do more harm than good. Return a defective rectifier bridge section (or the entire bridge) to the factory for repairs.

IDEALARC® R3R 375-I, 500-I AND 600-I

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Lincoln Electric R3R 375-I, R3R 500-I manual Routine Maintenance, Pocket Amptrol, Power Rectifier Replacement