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WELD-PAK 90i
WIRE LOADING AND THREADING
R e fe r to F igure 2.
Turn machine power switch to the OFF ("0") position before
working inside the wire feed enclosure.
Make sure that the wire feed drive roll and the contact tip of the
gun match the diameter and type of wire used.
1. Push the spool onto the spindle so that the wire feeds off the
bottom of the spool, toward the drive roll.
2. Push the spool spacer onto the spindle, against the spool.
3. Slide the spring onto the spool, then press on the spool lock,
turning it clockwise to lock the spool assembly onto the
spindle.
FIGURE 2
Cold Feed Switch
Spool Lock & Spring Cap
Spool Spacer
Spool
Note Wire Direction
Spindle
WIRE THREADING DETAILS
R e fe r to F igure 3.
4. Release the spring loaded thumb screw and rotate the idle roll
arm away from the wire feed drive roll. Ensure that the
visible, stenciled size on the drive roll side facing you
matches the wire size being used.
5. Carefully detach the end of the wire from the spool. Maintain
tension on the wire to prevent the spool from unwinding and
do not release the wire until after step 5.
mm).
Thread the wire through the incoming guide tube, over the
drive roll, and into the gun liner.
Close the idle roll arm and turn down the thumbscrew until
release the welding wire). Make sure the wire is positioned in
the groove of the drive roll.
The spring loaded thumbscrew on the idle roll arm adjusts the
pressure on the wire. Adjust pressure by turning the
thumbscrew to prevent spool overrun, but still allow smooth
and easy wire feeding. Start with the pressure set to an inter-
mediate value. Readjust, if necessary. If the drive roll slips
while feeding wire, the pressure should be increased until the
wire feeds properly.
FIGURE 3
INSTALLATION
Idle Arm
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