3
ENGLISH
DEAR FRONIUS CUSTOMER
This brochure is intended to familiarise you with how to operate and
maintain your VarioStar 247 (VST 247), VarioStar 317 (VST 317) and
VarioStar 317-2 (VST 317-2). 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 mal-
functions. 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".
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 247 / 317 / 317-2 ............................................... 6
Machine concept - VST 247 / 317 ....................................................... 6
Machine concept - VST 317-2 ............................................................. 6
Controls and connections ......................................................................... 6
Operating modes ....................................................................................... 8
2-step mode ........................................................................................... 8
4-step mode ........................................................................................... 8
IntermittEnt 2- / 4-step mode .............................................................. 8
Spot welding .......................................................................................... 9
Wire-inching .......................................................................................... 9
Starting to use the welding machine ....................................................... 9
Utilisation for intended purpose only .................................................. 9
Machine set-up regulations .................................................................. 9
Mains connection .................................................................................. 9
Linking up the VST 317-2 power source
to the Vario 8 wirefeeder .................................................................... 10
Mounting / connecting the gas cylinder ............................................ 10
Mounting the welding torch ................................................................ 10
Mounting the wire spool ..................................................................... 10
Feeding in the wire electrode ............................................................ 10
Setting the shielding-gas rate ............................................................ 11
Changing the feed rollers ................................................................... 11
Correcting the wire infeed .................................................................. 11
Polarity reverser .................................................................................. 12
MIG/MAG welding ................................................................................... 12
Setting the operating point ................................................................. 12
Example of a setting (VST 247) ........................................................ 12
Spot welding ............................................................................................ 13
Care and maintenance ........................................................................... 13
Troubleshooting guide ............................................................................ 14
Technical Data ......................................................................................... 16
VST 247 / 317 / 317-2 power sources .............................................. 16
Vario 8 wirefeeder ............................................................................... 16
Spare parts list
Fronius - Sales and service offices
Содержание VST 247
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