Tweco 2RT Transmig - Manual (Page 30)

TRANSMIG 2RT INSTALLATION/SETUP
INSTALLATION/SETUP 3-14 Manual 0-5196
3.15 Feed Roller Pressure Adjustment
NOTE
Before attempting to set the drive roller pressure you must select GMAW mode on the front panel. See
Transmig 250i manual Section 3 for information on how to select this feature. Once selected it will allow
the activation of the drive roll when the trigger on the MIG Torch is activated.
The roller on the swing arm applies pressure to the grooved roller via an adjustable tension devise. The Tension Ad-
juster 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 Torch 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 feedroll 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 TWECO contact tips and liners should be used. Many non-genuine liners use inferior materials
which can cause wire feed problems.
3.16 Feed Roller Alignment
The bottom Feed Roll is adjustable in and out to provide for best alignment of wire as it feeds into the outlet guide. To
adjust the roll do the following and refer to Figure 3-13, Note, the welding wire is not shown in order to more clearly
see the groove in the feed roll.
1. Place a wrench on the adjusting bolt (number 2) and hold in place while you loosen the locking screw (number
1) with a hex wrench
2. With the locking screw loosened, turn the adjusting bolt right or left to align the feed roll (number 3) so the
groove is aligned with the outlet guide (number 4).
3. With the feed roll aligned, place a wrench on the adjusting bolt and hold it in place while tightening the locking
screw with the hex wrench. If the adjusting bolt moves before the locking screw is secured then the alignment
will change.
1
2
3 4
Art # A-10415
Figure 3-13: Top View of Feed Plate with Pressure Arm Open
NOTE
It may not be possible to align with both the inlet and outlet guide at the same time. The outlet guide is the
one that needs to be aligned to for best wire feeding.