User manual

dha20001

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dha2d1ea

S Check that the wire feed roller (1) and

contact jaws (4) are the correct size.

S Guide the wire through the two small bolt

eyes.

S Insert the end of the wire into the

groove in the feed roller.

S Adjust the feed roller pressure on the wire

using the adjuster screw (6).

NOTE! Tighten only enough to ensure smooth wire

feed. Do not tighten the adjuster screw all the way,

there must be some play left.

S Feed the wire through using switch A 02 on the

PEG box.

S While the wire is being fed through, straighten it out by

adjusting the knob (5) on the wire straightener, or by

using a special wir e straightener for thin wire or twin

wire. When the wire straightener is correctly adjusted

the wire should come straight out between the contact

jaws and contact tip.

5. Changing the wire feed roller (see wear components on page 123).

S Single wire:

S Loosen the knob (5) and adjuster screw (6).

S Undo the hand wheel (2).

S Change the feed roller. T he wire size is m arked on the rollers.

S Twin wire:

S Change feed rollers with twin grooves in the same way as for single wire.

S NOTE! Change the pressure roller at the same time. T he special

spherical roller for twin wire replaces the standard pressure roller for

single wire.

S Fit the pressure roller using the special shaft stud

(order no. 146 253--001).

S Hollow wire:

S Replace the feed roller and pressure roller with rollers of the correct size.

NOTE! A special shaft stud is required for the pressure roller

(order no. 2129 011--01).

S Tighten the adjusting screw to a moderate pressure so that the wire is

not deformed.

6. Position the flux nozzle so that it does not catch and provides a good coverage

of flux (Sub--arc welding).

N.B! The lenght of the flux delivery hose is to be adapted to the welding head

position.

7. Check that the wheels of the carriage do not come closer than 50 mm to the

weld during welding.