Fronius VARIOSTAR 357 Mode D'emploi page 21

CONTENTS
Dear Fronius Customer ............................................................................ 3
Safety rules ................................................................................................ 4
General remarks ................................................................................... 4
Utilisation for intended purpose only .................................................. 4
Obligations of owner/operator ............................................................. 4
Obligations of personnel ...................................................................... 4
Personal protective equipment ............................................................ 4
Hazards from noxious gases and vapours ......................................... 4
Hazards from flying sparks .................................................................. 4
Hazards from mains and welding current ........................................... 4
Particular danger spots ........................................................................ 4
Informal safety precautions ................................................................. 4
Safety precautions at the installation location ................................... 5
Safety precautions in normal operation .............................................. 5
Safety inspection .................................................................................. 5
Alterations to the welding machine ..................................................... 5
Spares and wearing parts .................................................................... 5
Calibration of welding machines ......................................................... 5
CE-marking ............................................................................................ 5
Copyright ............................................................................................... 5
General remarks ........................................................................................ 6
Principle of the VST 357 / 357-2, 457, 457-2 .................................... 6
Machine concept VST 357 / 457 ......................................................... 6
Machine concept VST 357-2 / 457-2 .................................................. 6
Controls and connections ......................................................................... 6
Operating modes ....................................................................................... 9
2-step mode ........................................................................................... 9
4-step mode ........................................................................................... 9
Intermittent 2- / 4-step mode .............................................................. 9
Spot welding .......................................................................................... 9
Wire-inching .......................................................................................... 9
Gas-test ............................................................................................... 10
All manuals and user guides at all-guides.com
3
DEAR FRONIUS CUSTOMER
This brochure is intended to familiarise you with how to operate and
maintain your VarioStar 357 (VST 357), VarioStar 357-2 (VST 357-2),
VarioStar 457 (VST 457) and VarioStar 457-2 (VST 457-2). You will find
it well worthwhile to read through the manual carefully and to follow all the
instructions it contains. This will help you to avoid operating errors - and
the resultant malfunctions. Your machine will repay you by giving you
constant operational readiness for many years to come.
FRONIUS SCHWEISSMASCHINEN
VERTRIEB GMBH & CO KG
Warning! The machine may only be put into service by trained
personnel, and only in accordance with the technical directions.
Before you start using the machine, you must read the section
headed "Safety rules".
Starting to use the welding machine ..................................................... 10
Utilisation for intended purpose only ................................................ 10
Machine set-up regulations ................................................................ 10
Mains connection ................................................................................ 10
Plug the machine into the mains ....................................................... 11
Assembling the VarioStar 357/457 .................................................... 11
Assembling VarioStar 357-2 / 457-2 ................................................. 11
Mounting / connecting the gas cylinder ............................................ 12
Mounting the welding torch ................................................................ 12
Starting up the cooling unit ................................................................ 12
Mounting the wire spool ..................................................................... 13
Feeding in the wire electrode ............................................................ 13
Setting the shielding-gas rate ............................................................ 13
Changing the feed rollers ................................................................... 13
Correcting the wire infeed .................................................................. 14
MIG/MAG welding ................................................................................... 15
Manual mode ....................................................................................... 15
Program mode ..................................................................................... 15
Spot welding ............................................................................................ 15
Care and maintenance ........................................................................... 15
Troubleshooting ....................................................................................... 16
Error messages on the displays ........................................................ 16
VST 357/357-2, VST 457/457-2 power source ................................ 16
Technical Data ......................................................................................... 18
VST 357/357-2, VST 457/457-2 power sources .............................. 18
FK 57 cooling unit ............................................................................... 18
VR 57 wirefeeder ................................................................................ 18
Spare parts list
Fronius - Sales an service offices