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Forney 140 MP - General Operating Instructions; Operating Guidelines and Maintenance; Welder Basic Specifications; Welding Wire and Gas Selection

Forney 140 MP
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This manual was edited to give some indications on the operation of the welder and was thought
to offer information for its practical and safe use. Its purpose is not to teach welding techniques.
All 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 metal fabrication and maintenance. Its simplicity and
versatility and its excellent welding characteristic are the product of the most up to date inverter
technology. This welding inverter offers the welder the ability to create precise arc characteristics
and at the same time reduce 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 the rated duty cycle. Exceeding the rated duty cycle may cause overheating or
welder damage.
Welding Wire Selection:
This welder can work with Aluminum wire .030” (0.8mm) diameter, solid steel wire .023”-
.035” (0.6-0.9mm) diameter and stainless steel wire .030”-.035” (0.8-0.9mm) diameter
(MIG Welding, “GMAW”) and with flux core wires 0.9mm diameter (.035”) (FLUXCORE WIRE
Welding, “FCAW”).
Gas Selection:
According to the material to be welded and to the wire you are going to use, select the shielding
gas. The table below 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
FLUXCORE WIRE Welding, “FCAW” use
flux-cored wire spool
Stainless Steel Argon Cylinder Stainless Steel wire spool
Aluminum Argon Cylinder Aluminum wire spool
General Operating Instructions
Welders Basic Specifications:

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