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MAINTENANCE |
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Do not operate with covers removed.
•Turn off power source before installing or servicing.
•Do not touch electrically hot parts.
•Turn the input power to the welding power source off at the fuse box before working in the terminal strip.
•Only qualified personnel should install, use or service this equipment.
ROUTINE MAINTENANCE
•Check weld cables, control cables and gas hoses for cuts.
•Clean and tighten all weld terminals.
PERIODIC MAINTENANCE
•Clean drive rolls and inner wire guide and replace if worn.
•Blow out or vacuum the inside of the feeder.
CALIBRATION SPECIFICATION
All calibrations are factory set on the POWER FEED® 25M.
To verify the wire feed speed:
•Assemble a .045 (1.2mm) drive roll kit into the POWER FEED® 25M.
•Load a spool of .045 (1.2mm) electrode and thread the electrode through the wire drive.
•Adjust the wire feed speed to 300 in/min (7.62m/min).
•Press the COLD FEED switch and measure the actual wire feed speed with a calibrated wire feed speed tachometer.
•The measured wire feed speed should be within 2% of the set value.
•If no feed speed meter is available, cut the wire at gun tip. Cold inch for 5 seconds at 300 inches/minute. Measure the wire - should be 24 inches +1,
To verify the voltage display:
•Set the welding power source and POWER FEED® 25M to a CV pro- cedure that gives steady "spray" transfer in the arc.
•While a weld is being made, measure the voltage from the feed plate to work with a calibrated volt meter.
•The displayed voltage on the POWER FEED® 25M should be within 2% of the measured value.