Vector Welding MIG145 Bedienungsanleitung Seite 34

Operation
MIG185 / MIG205 / MIG225 / MIG255 / MIG295 feed device
Illustration1
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Illustration3
3.4 Feed roller pressure adjustment
The roller on the swing arm applies pressure to the grooved roller via an adjustable tension
devise. The Tension Adjuster should be set to a minimum pressure that will provide satisfactory
wire feed without slippage. If slipping occurs, and inspection of the wire out of the MIG Gun
reveals no deformation or wear, the conduit liner should be checked for kinks or clogging
from metal flakes. If this is not the cause of slipping, the feed roll pressure can be increased
by rotating the Tension Adjusting knob clockwise. The use of excessive pressure may cause
rapid wear of the feed roller, motor shaft and motor bearings.
NOTE
Genuine contact tips and liners should be used. Many non-genuine liners use inferior
materials which can cause wire feed problems.
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MIG SERIES EQUIPMENT
Illustration2
MIG SERIES EQUIPMENT
3.5 Changing the feed roll
NOTE
Feed rolls often come with a rust prohibitive coating that needs to be cleaned off before installation.
A Feed roll consists of four different sized grooves. As delivered from the factory the drive
roll is installed for 0.6 / 0.8 mm .
The stamped marking on the feed roll refers to the groove furthest from the stamped marking.
When mounted, that will be the groove closest to the motor and the one to thread.
To ensure proper wire feed, the groove closest to the motor must match the electrode wire
size being used.
0.8V Einkerbung
The size that is visible when fitting the feedroll is the groove size in use.
NOTE
All grooved feed rolls have their wire size or range stamped on the side of the roll. On rolls
with different size grooves, the outer (visible when installed) stamped wire size indicates
the groove in use.
Refer to feed roll kit in the Appendix for the proper selection and ordering of feed roll kits.
Kit includes drive rolls, an input wire guide and an output wire guide for a specific wire type
and size.
Feed rolls are removed by twisting the feed roll retainer cap and aligning the retaining knob
splines/tabs with the drive gear splines. Feed rolls are installed by putting the feed roll onto
the drive gear splines and twisting the feed roll retainer cap so that the splines/tabs rest
against the face of the feed roll where they will click into place.
WARNING
The welding wire is electrically Hot if it is fed by depressing MIG Gun switch. Electrode contact
to work piece will cause an arc with MIG Gun switch depressed.
Operation
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