Gas Cylinder And Regulator Connection; Loading Wire - Helvi UNIMIG 298+T2E Manual De Uso

6.0

gAS CYLINDER AND REgULATOR CONNECTION

WARNING: Cylinders are highly pressurized. Handle with care. Serious accidents
can result from improper handling or misuse of compresses gas cylinders. Do not
drop the cylinder, knock it over, expose it to excessive heat, flames or sparks. Do not
strike it against other cylinders.
The bottle (not supplied) should be located at the
rear of the welder, securely held in position by the
chain provided.
For safety, and economy, ensure that the regulator is fully
closed, (turned counter-clockwise) when not welding
and when fitting or removing the gas cylinder.
• Turn the regulator adjustment knob counter-
clock wise to ensure the valve is fully closed.
• Screw the gas regulator fully down on the gas
bottle valve, and fully tighten.
• Connect the gas hose to the regulator secu-
ring with clip/nut provided.
• Open the cylinder valve, then set the gas flow
to approx. 8l/min. on the regulator.
• Operate the torch trigger to ensure that the
gas is flowing through the torch.
7.0
Your Mig welder is designed to accept either 5kg or 15kg wire spools.
Wire spools aren't supplied with the unit and must be purchased separately.
Ensure the gas and electrical supplies are disconnected. Before proceeding, remove
the nozzle and the contact tip from the torch.
FIG. 7
• 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.
SPOOL HOLDER AS FIG. 8
• Open the side panel. Loosen the nut of the spool holder.
• Remove the plastic protection from the spool. Place it
on the spool holder and fix it tightening the nut.
Tighten nut to appropriate tightness. Excessive
pressure strains the wire feeding motor. Too lit-
tle pressure does not allow the immediate stop
of the wire spool at the end of the welding.
30
-ENGLISH-

LOADINg wIRE

SPOOL HOLDER AS FIG. 7 - 7A
• 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 7).
• 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. 7).
Your Mig welder can also accept 100 mm diameter wire
spools. for the mounting follow these instructions:
MATERIAL GAS
TO WELD CYLINDER
Argon +
CO2 cylinder
Mild steel
or CO2
cylinder
Argon
Stainless steel
cylinder
Argon
Aluminium
cylinder
WIRE
Copper coated
mild steel wire
spool.
For no gas
welding use flux-
cored wire spool
Stainless steel
wire spool.
Aluminium
wire spool
FIG. 7A
FIG. 8