General Remarks; Principle Of The Vst 357 / 357-2, 457, 457-2; Machine Concept Vst 357 / 457; Machine Concept Vst 357-2 / 457-2 - Fronius VARIOSTAR 357 Bedienungsanleitung & Ersatzteilliste

GENERAL REMARKS

PRINCIPLE OF THE VST 357 / 357-2, 457, 457-2

This welding machine is a MIG/MAG gas-shielded unit with optimum
welding properties. Its area of application ranges from sheet-metalworking
all the way up to heavy structural steel work. Its ability to weld solid and
flux-cored wires of various different diameters and alloys under various
commonly available shielding gases extends its area of use to take in the
production and repair fields. It goes without saying that this machine
comes with pre-selectable control routines such as 2-step, 4-step,
intermittent 2-step, intermittent 4-step and spot-welding.

MACHINE CONCEPT VST 357 / 457

The VST 357/457 was designed as a compact unit and is built to function
dependably under even the toughest operating conditions. Features such
as its powder-coated sheet-steel housing, protected controls and torch
central connector all testify to the high quality of its design. Thanks to its
insulated carrying handle and large-wheeled trolley, the machine is easy
to move around - both in the workshop and out in the field. A detachable
side panel keeps any grinding dust, swarf etc. out of the drive system.

MACHINE CONCEPT VST 357-2 / 457-2

The VST 357-2/457-2 was designed as a two-part unit and is built to
function dependably under even the toughest operating conditions.
Features such as its powder-coated sheet-steel housing, protected
controls and torch central connector all testify to the high quality of its
design. Thanks to its insulated carrying handle and large-wheeled trolley,
the machine is easy to move around.
The portable VR 57 wirefeeder unit can either be placed on top of the
power source or mounted on an intermediate trolley so as to extend the
operating range. A tilt-up side panel keeps any grinding dust, swarf etc.
out of the drive system. The wire spool is also protected against dust and
splash-water by a plastic box.
Fig.1 VST 357/457-2
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CONTROLS AND CONNECTIONS

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Fig.2 Front view of VST 457 with optional MC 57 program module
Fig.3 Side view of VST 457
Fig.4 Front view of VR 57 wirefeeder
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