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5 OPERATION
5.6
Setting the wire feed pressure
Illustration A
Start by making sure that the wire moves smoothly through the wire guide. Then set the pressure of
the wire feeder's pressure rollers. It is important that the pressure is not too high.
To check that the feed pressure is set correctly, you can feed out the wire against an insulated
object, e.g. a piece of wood.
When you hold the welding torch approximately 5 mm (0.2 in.) from the piece of wood (illustration
A), the feed rollers should slip.
If you hold the welding torch approximately 50 mm (2 in.) from the piece of wood, the wire should
be fed out and bend (Illustration B).
The wire reel hub incorporates a friction brake which is adjusted during manufacture for optimum
braking. If it is considered necessary, adjustment can be made by turning the thumb screw inside the
open end of the hub clockwise to tighten the brake. Correct adjustment will result in the wire reel
circumference continuing no further than 1/8 in.-3/16 in. (3-5 mm) after release of the trigger. The
electrode wire should be slack without becoming dislodged from wire spool.
CAUTION!
Overtension of the brake will cause rapid wear of mechanical wire feeder parts, overheating of
electrical components and possibly more incidences of contact tip burnback.
5.7
Changing the feed/pressure rollers
Three dual groove feed roller are supplied as standard. Change the feed roller to match the filler metal
wire diameter.
NOTE!
Make sure not to lose the key that is located on the drive motor shaft. This key must be in
place and align with drive roll slot for proper operation.
1) Open the spool side door.
2) Release the pressure roller arm by levering the tension screw.
3) Lift the pressure roller arm.
4) Remove the feed roll retaining screw by turning it counterclockwise.
5) Change the feed roll.
6) Tighten the feed roll retaining screw by turning it clockwise.
7) Secure the pressure roller arm and wire drive tension screw.
0447 956 001
Illustration B
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© ESAB AB 2023
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