Tweco 2RT Transmig - Manual (Page 24)

TRANSMIG 2RT INSTALLATION/SETUP
INSTALLATION/SETUP 3-8 Manual 0-5196
3.09 Wire Feeder Set Up MIG (GMAW) Welding with Gas Shielded MIG Wire
The Transmig 250i is supplied with a Tweco Fusion 250 AMP air-cooled MIG Torch that can be used with the 2RT Wire
Feeder. The Fusion MIG Torch is designed with an ergonomic handle and fewer parts to cause performance problems.
The Fusion MIG Torch uses standard readily available Tweco Fusion consumable parts.
When using a Gas Shielded wire with the 2RT Wire Feeder, you need to have an external gas source attached to the 2RT.
For most Gas Shielded wire, connect the Work Lead to the negative - terminal on the front of the Transmig 250i and
connect the Welding Power Cable from the back of the 2RT to the positive + terminal on the front of the Transmig
250i. Check with wire manufacturer for recommended polarity.
The 2RT Wire Feeder is fitted with an 8M interconnection cable assembly to connect from the back of the 2RT to the
front of the Transmig 250i welding power source.
Connect the MIG Torch to the front of the 2RT as you would to the front of the Transmig 250i. See Figure 3-6 below
and Section 3.11.
+
-
Front View 2RT Rear View 2RT Front View 250i
Control Cable
Welding Power Cable
from Wire Feeder
Work Lead
Art # 10335
Gas Hose
Figure 3-6: Setup for 2RT Wirefeeder with Gas Shielded MIG Wire
WARNING
Before connecting the work clamp to the work make sure the mains power supply is switched off.
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being fused in the
terminal.
NOTE
Depending on the type of wire you will be using the MIG Torch polarity may need to be switched. Follow
the wire manufacturers recommendation.
NOTE
Spool hub and feed plate set up and operation are the same as the 250i which can be reviewed later in this
Section starting at 3.12.