Lincoln Electric IM761 POWER FEED 15M - Manual (Page 13)

A-6 INSTALLATION
POWER FEED 15M
A-6
WIRE DRIVE CONFIGURATION
(See Figure A-6)
Changing the Gun Receiver Bushing
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the
welding power source before instal-
lation or changing drive rolls and/or
guides.
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode
and drive mechanism are "hot" to work and
ground and could remain energized several sec-
onds after the gun trigger is released.
• Only qualified personnel should perform mainte-
nance work.
------------------------------------------------------------------------
Tools required:
• 1/4" hex key wrench.
Note: Some gun bushings do not require the use of
the thumb screw.
1. Turn power off at the welding power source.
2. Remove the welding wire from the wire drive.
3. Remove the thumb screw from the wire drive.
4. Remove the welding gun from the wire drive.
5. Loosen the socket head cap screw that holds the
connector bar against the gun bushing.
Important: Do not attempt to completely
remove the socket head cap screw.
6. Remove the outer wire guide, and push the gun
bushing out of the wire drive. Because of the pre-
cision fit, light tapping may be required to remove
the gun bushing.
7. Disconnect the shielding gas hose from the gun
bushing, if required.
8. Connect the shielding gas hose to the new gun
bushing, if required.
9. Rotate the gun bushing until the thumb screw hole
aligns with the thumb screw hole in the feed plate.
Slide the gun receiver bushing into the wire drive
and verify the thumb screw holes are aligned.
10. Tighten the socket head cap screw.
11. Insert the welding gun into the gun bushing and
tighten the thumb screw.
GUN RECEIVER BUSHING
LOOSEN TIGHTEN
THUMB SCREW
OUTER WIRE GUIDE
SOCKET HEAD
CAP SCREW
CONNECTOR BLOCK
WARNING PROCEDURE TO INSTALL DRIVE ROLLS
AND WIRE GUIDES
• Turn off input power at the welding power source
before installation or changing drive roll and/or
wire guides.
• Do not touch electrically live parts such as the
wire drive or internal wiring.
• When feeding with the gun trigger, the electrode
and wire drive mechanism are "hot" to work and
ground and could remain energized several sec-
onds after the gun trigger is released.
• Only qualified personnel should perform this
operation.
------------------------------------------------------------------------
1. Release the idle roll pressure arm.
2. Remove the outer wire guide by turning the knurled
thumbscrews counter-clockwise to unscrew them
from the feed plate.
3. Rotate the triangular shaped drive roll retaining
mechanism to unlock the drive rolls and remove the
drive rolls.
4. Remove the inner wire guide.
5. Insert the new inner wire guide, groove side out,
over the two locating pins in the feed plate.
6. Install a drive roll on each hub assembly and lock
by rotating the triangular drive roll retaining mecha-
nism.
7. Install the outer wire guide by aligning it with the
pins and tightening the knurled thumbscrews.
8. Close the idle arm and engage the idle roll pressure
arm. Adjust the pressure appropriately.
WARNING
FIGURE A-6