Helvi MONOMIG 186 Manuel D'instructions page 25

FIG. 5
• Remove the wire spool (B) from the spool holder (C).
• Loosen the nut (A), remove the spring and the washer;
remove the spool holder (C) from the pivot.
• Insert on the pivot the 100mm diameter wire spool;
Mount the washer, the spacer (G) and the spring.
• Tighten the lock nut (A).
Tighten nut (A) to appropriate tightness. Exces-
sive pressure strains the wire feeding motor.
Too little pressure does not allow the immediate
stop of the wire spool at the end of the welding.
• Loosen and lower the plastic knob (A) (Fig.6). Open the
pressure arm (B) of the feeder. Extract the wire from the
torch liner (E).
• When the wire is disconnected, grasp it with pliers so that it
cannot exit from the spool. If necessary, straighten it before
inserting it in the wire input guide (C). Insert the wire on the
lower roll (D) and in the torch liner (E).
WARNING: keep the torch straight. When feeding a
new wire through the liner, make sure the wire is cut
cleanly (no burrs or angles) and that at least 2 cm
from the end is straight (no curves). failure to follow
these instructions could cause damage to the liner.
• Lower the pressure arm (B) and place the knob (A). Tighten
slightly. If tightened too much, the wire gets locked and
could cause motor damage. If not tighten enough, the rolls
will not feed the wire.
WARNING: When changing the wire diameter
being used, or replacing the wire feed roll, be sure
that the correct groove for the wire diameter se-
lected is inside, closest to the machine. The wire is
driven by the inside groove. feed rolls are marked
on the side identifying the groove nearest that side.
• Close the side panel of the machine. Connect the power
supply cable to the power output line. Turn on the switch.
Press the torch switch. The wire fed by the wire feeding mo-
tor at variable speed must slide through the liner. When it
exits from the torch neck, release the torch switch. Turn off
the machine. Mount the contact tip and the nozzle.
When checking the correct exit of the wire from the torch do not bring your face
near the torch, you may run the risk to be wounded by the outgoing wire. Do not
bring your fingers close to the feeding mechanism when working! The rolls, when
moving, may crush the fingers. Periodically, check the rolls. Replace them when
they are worn and compromise the regular feeding of the wire.
-ENGLISH-
• Open the side panel. Loosen the nut (A) of the spool holder
(position 1) (brake drum).Remove the spacer (E, if present). In
the case you are replacing the wire spool, extract it by pushing
the snap tongue (D) (Fig 5).
• Remove the plastic protection from the spool. Place it on the
spool holder. Mountthe spacers again (E/F, only for 5kg spools;
the smaller spacer E must be mounted between the spool and
the spool holder). Then tighten the lock nut (A) turning it to
position 2. (fig. 5).
Your Mig welder can also accept 100 mm diameter wire
spools. for the mounting follow these instructions:
PLASTIC WIRE FEEDER
PLASTIC/ALUMINIUM WIRE FEEDER
ALUMINIUM WIRE FEEDER
FIG. 5A
FIG. 6
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