Replacing The Wire Liner - Helvi MONOMIG 186 Manuel D'instructions

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6.0

Before performing this procedure, ensure the gas and electrical supplies are di-

sconnected.

The procedure to follow for replacing the wire liner depends upon the torch connection type of your

welder.

•

Open the side panel. Loo-

sen and lower the plastic

knob (A) and release the

pressure arm (B) (Fig. 6).

Cut the wire (in the case it is

installed) grasp it with pliers

so that it cannot exit from

the spool and fix it on the

suitable hole in the reel. Re-

move the nozzle and con-

tact tip. Remove with pliers

the wire from the hose and

torch assembly.

If the torch is already mounted connected and has a gas valve on the handle (fig. 7):

•

Remove the screws (1-2) securing the torch support bracket (3).

•

Hold the torch on its side, on a flat surface and carefully remove the upper cover by unscrewing

the securing screws (4). Take care not to disturb the components within, so that you can take note

of their exact position.

•

Lift out the gas valve (5) and disconnect the liner from its quick fit coupling (7) by pushing in.

•

Straighten the torch hose and pull the liner completely out of the hose.

•

Thread the new liner into the hose from the torch. Push the end of the liner firmly into the quick fit

coupling on the gas valve (5).

•

Re-assemble the torch, taking care to ensure that all the components are correctly seated. Do not force

the two halves of the handle together, ensure that the dowel is lined up before tightening the screws.

•

Replace the torch in the torch support bracket (3).

•

Mount the upper cover (3) of the torch by fixing the screws (1-2).

•

Measure the wire liner and trim it back, using a good pair of side cutters, so that there is no more

of 2mm gap (7) between the end of the liner and the feed roller. Take care to ensure there are no

burrs or sharp edges which may impede the progress of the wire when fitted.

•

Install the wire into the feeding system and close the side panel.

In case of direct connection (fig.8) :

•

Remove the screws (1) securing the torch support bracket (2).

•

Unscrew the brass nut (3) from the torch hose end and remo-

ve the torch from its place.

•

Remove the nozzle and the contact tip.

•

Pull the liner (4) out of the hose.

•

Thread the new liner into the hose to the torch neck.

•

Replace the torch were it was.

•

Mount the brass nut (3) and the plastic support bracket (2)

again.

•

Measure the wire liner and trim it back, using a good pair of

side cutters, so that there is no more of 2mm gap between

the end of the liner and the feed roller. Take care to ensure

there are no burrs or sharp edges which may impede the

progress of thewire when fitted.

•

Install the wire into the feeding system, mount the nozzle and

the contact tip again and close the side panel.

-ENGLISH-