MK Products Prince XL MM Com ACWC - Manual (Page 10)

Prince ® XL Millermatic Compatible Gun Owner's Manual - Page 3
inserting into the body. Tighten taper lock nut assembly firmly so that barrel
cannot rotate.
Barrel Rotation
To rotate a barrel assembly, loosen the patented EZ Lock ® Taper lock nut
assembly no more than 1 turn. Rotate barrel to the position of your choice
and retighten taper lock nut assembly firmly so that the barrel cannot rotate.
WARNING:
Do not attempt to weld without the barrel being tightly secured
in the gun body, or damage to the barrel or body may result. Failure to
take such precaution will void your warranty.
Controls and Settings
Potentiometer
The potentiometer is located in the bottom of the pistol grip and provides
3-3/4 turns of adjustment for up to 800 ipm.
The potentiometer is mounted to one side of a PC board and is held in place
by a support plate. Both the potentiometer and the support plate have slots
that locate and secure the potentiometer in the handle. The other side
of the PC board houses the motor connectors and ribbon cable. Locking
disks behind the potentiometer knob provides a stop at the minimum and
maximum potentiometer settings.
Micro Switch
The micro switch assembly consists of the micro switch, leads, and
connector. The assembly is secured to the gun block with two (2) screws.
An insulator between the gun block and micro switch prevents accidental
shorting of the switch leads. The leads are laid in the channel under the
motor and held in place with electrical tape.
Drive and Idler Rolls
The Prince XL Millermatic Compatible gun comes standard with a knurled
drive roll and a grooved idler roll, which will handle both steel and aluminum
wire with diameters from .030-1/16 inch. Optional insulated V-groove drive
rolls are also available for aluminum wire if desired (see Optional Kits).
Drive roll tension is accomplished by means of a pressure adjusting allen
screw located on the left hand side of the gun. Proper tension is achieved
when wire does not slip if a small amount of pressure is added to the wire as
it exits the tip.
NOTE:
Over-tightening of the drive rolls will cause excessive
knurling and/or deformation of the wire.
Drive Roll Installation/Removal
NOTE:
Neither of the handles needs to be removed to access the
Drive or Idler Rolls
1. Pull the Cam Lever away from the idler roll. This will relieve the
pressure against the drive roll.
2. Align the Drive Roll Removal Tool (P/N 931-0100) over the flats
of the drive roll. Hold the gun with one hand or on a table
top, with the other hand give the Removal Tool a quick snap-turn
in the CLOCKWISE DIRECTION.
3. Once the drive roll is loose, continue to spin drive roll in the
clockwise direction to remove the drive roll from the gun.
4. Install a new drive roll on the left-hand threaded shaft. The drive roll
will self-tighten when it is feeding wire.