Manual

13
PPi Dual Drive
8 Maintenance and cleaning
8.1 Replacing the drive rolls
a Fig. 6 Feeding in the wire on page 10.
Note
• Makesurethatthedriverollscomplywiththediameteroftheinserted
wire electrode.
1. Open the housing cover (2) and unscrew the two drive roll slotted thumb
screws.
2. Rotate the tension knob (3) counter-clockwise.
3. Pull up on the drive rolls to remove them. If necessary, a small flat blade screw-
driver can be used to pry up on the drive rolls.
4. Replace the drive rolls and secure them on the motor shaft using the slotted
thumb screws. The drive rolls are designed for two different wire sizes and are
stamped with the wire sizes on each end. The correct wire size stamp should be
facing up when properly installed.
5. Rotate the tension knob (3) clockwise until it stops and close the housing cover
(2).
8.2 Cleaning the wire conduit
1. Unscrew the cable assembly on the machine side and bring it into a stretched
position.
a See Fig. 3 on page 7.
2. Unscrew the retention nut (6) and pull out the liner (7) and replace it, if neces-
sary.
! WARNING
Risk of injury
Serious injuries caused by parts swirling around.
• Whencleaningthewireguidewithcompressedair,wearsuitable
protective clothing, in particular safety goggles.
3. Clean the cable assembly (10), internally from both sides with compressed air.
4. Slide liner (7) into rear connector (3) and secure it with the retention nut (6).
a See liner 4.3.1 on page 7
5. Connect cable assembly to the wire feed unit.
8.3 Torch neck
1. Remove gas nozzle.
2. Remove welding spatter and spray gas nozzle with ABICOR BINZEL anti-
spatter agent.
3. Check wear parts for visible damage and replace them, if required.
4. Replace neck liner or wire guide when worn or soiled.
5. Clean the neck interface and grease O-rings with silicone-free sealing grease.