Lincoln Electric POWER FEED IM892-C - Manual (Page 72)

D-1 MAINTENANCE D-1
POWER FEED™ 25M
ELECTRIC SHOCK can kill.
• D o n o t o p e r a t e w i t h c o v e r s
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.
WARNING
SAFETY PRECAUTIONS
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.
• A d j u s t t h e w i r e f e e d s p e e d t o 3 0 0 i n / m i n
(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.
To verify the voltage display:
• Set the welding power source and POWER FEED™
25M to a CV procedure 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.