Hot Max Torches 250WFG - Manual (Page 13)

KDAR Company 12
Operation
Changing Drive Roll
The drive rollers have two grooves with the size of the
groove etched in the corresponding side of the drive
roller. The welder is shipped set up for .040 (1.0 mm).
1. Turn power off and unplug the welder.
2. Open the wire drive compartment door, release the
spring loaded tension arm (1) by flipping it down
and lift the left and right idle arm (2).
3. Remove the drive roller retention covers by turning
them counter-clockwise (3).
4. The drive rollers will slide off the shaft without the
use of tools.
5. Select the drive roller size required.
6. Line up the grove in the drive roller with raised re-
tention holder on the shaft and push the drive rollers
onto the shaft. Make sure both drive wheels have the
size identification required on the outside.
Note: The wire will run through the grooves on
the outside of the drive roller.
7. Re-attach the drive roller retention covers (3) by
turning them clockwise.
TIG Gun Set-Up
1. Disassemble the TIG gun by unscrewing the gas
nozzle (1) and the collet body (2), the collet will re-
lease. Unscrew the short black cap off the back of
the gun.
2. Select the appropriate size collet to correspond with
the tungsten electrode (not included) being used.
3. Loosely attach the long black cap (5) to the gun. Do
not tighten the caps as this will be used to seat the
collet to hold the tungsten in place.
4. Slide the electrode through the collet.
5. Slide the collet into the collet body.
6. Screw the collet body into the gun (4).
7. Screw the gas nozzle onto the collet body.
8. Extend the electrode to desired position.
9. Tighten the long black cap to seat the electrode.
Figure 17
1 2
3
4
1 2 3 4 5