Helvi 99820018, Instruction Manual

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EN-4
4.0 KNOW YOUR WELDER
Your welder offers two welding functions in the same generator. These functions can be selected thru the
selector key on the front panel of the unit:
Stick Welding
we can weld rutile electrodes till diam. 4,0mm. The welding current is adjustable thru the potentiometer
on the front panel.
MIG (GMAW and FCAW) Welding with Gas and without Gas
This welder offers the chance to weld in manual function allowing to the operator the possibility of setting
the wire speed and the welding voltage and in automatic function by automatically associating a wire speed
variation to a voltage variation.
3.0 INTRODUCTION
This manual was edited to give some indications on the operation of the welder and was thought to
offer information for its practical and secure use. Its purpose is not teach welding techniques. All
given suggestions are indicative and intended to be only guide lines.
To ensure that your welder is in good conditions, inspect it carefully when you remove it from its packing
having care to ascertain that the cabinet or the stocked accessories are not damaged.
Your welder is capable of daily activity of construction and reparation. Its simplicity and versatility and its
excelling welding characteristic are granted by the inverter technology. This welding inverter allows to be
finely set to obtain optimal arc characteristics with a reduced consumption of energy with respect to the
welders based on a traditional transformer.
Respect the duty cycle of the welder making reference to the technical data label on the welder’s back.
Duty cycle is given as percentage on a 10 minute time. During this period of time the unit can be used at
a defined power regulation. Duty cycle exceeding may cause overheating or welder’s damage.
Welder’s basic specifications:
You may find the data table of your machine in the last page of this manual.
Welding Wire Selection:
This welder can work with Aluminum wire 0,8÷1,0 diameter, solid steel wire 0,6÷1,0 thick and stainless
steel wire 0,8÷1,0 thick (Gas Welding) and with flux core wires 0,9 thick (No Gas Welding).
Feed Rolls:
groove 0,6-0,8mm for wires 0,6÷0,8mm
groove 1,0-1,2mm for wires 1,0mm
U-groove feed rolls for Aluminum, groove 0,8-1,0mm for wires 0,8-1,0mm
kunurled groove 0,8 for 0,9 flux core wire
Gas Selection
According to the material to be welded and to the wire you are going to use select the protection gas. The
here below table can give you some useful indications:
MATERIAL TO WELD GAS CYLINDER WIRE
Mild steel
Argon + CO2 cylinder or CO2
cylinder
Copper coated mild steel wire
spool.
For no gas welding use
flux-cored wire spool
Stainless steel Argon cylinder Stainless steel wire spool.
Aluminum Argon Aluminum wire spool