Tweco 550i Transmig - Manual (Page 40)

TRANSMIG 350i, 450i, 550i
INSTALLATION, OPERATION AND SETUP 3-20 Manual 0-5205
3.09 Setup for MIG (GMAW) Welding with Gasless Mig Wire
POWER SOURCE CONNECTIONS
A. Remove all packaging materials. Do not block the air vents at the front or rear of the Power Source.
B. Connect the work lead to the positive welding terminal (+). If in doubt, consult the electrode wire manufac-
turer. Welding current flows from the Power Source via heavy duty bayonet type terminals. It is essential,
however, that the male plug is inserted and turned securely to achieve a sound electrical connection.
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being fused
in the terminal.
!
WARNING
Before connecting the work clamp to the work piece make sure the mains power supply is switched
off.
C. Select MIG mode with the process selection control button.
WIREFEEDER CONNECTIONS
A. Connect the welding power cable from the Wirefeeder's interconnection cables to the negative welding
terminal (-). If in doubt, consult the electrode wire manufacturer. Welding current flows from the Power
Source via heavy duty bayonet type terminals. It is essential, however, that the male plug is inserted and
turned securely to achieve a sound electrical connection.
B. Connect the control cable from the Wirefeeder to the 10 PIN or 19 PIN socket on the Power Source as
applicable.
C. Dual groove feed rollers are supplied as standard. Select the roller required with the chosen wire size
marking facing outwards.
GROOVE “B” GROOVE “A”
GROOVE “A” SIZE GROOVE “B” SIZE
Art # A-08739
D. Fit the electrode wire spool to the wire reel hub. Ensure that the drive dog-pin engages the mating hole
in the wire spool. Push the 'R' clip into place to retain the wire spool securely. The electrode wire should
feed from the bottom of the spool.
E. MIG Torch, EURO MIG Torch Connection
Fit the MIG Torch to the Wirefeeder by pushing the torch connector into the brass torch adaptor and screw-
ing the plastic torch nut clockwise to secure the torch to the torch adaptor. Remove the contact tip from
the torch handset.
TWECO style Torch Connection
Fit the MIG Torch to the Wirefeeder by pushing the torch connector into the brass torch adaptor and screw-
ing the hand nut clockwise to secure the torch to the torch adaptor. Remove the contact tip from the torch
handset. Attach the wirefeeder trigger wires to the MIG Torch.
F. Lift up the wire feeder pressure levers and pass the electrode wire through the inlet guide, between the
rollers, through the centre guide, between the rollers, through the outlet guide and into the MIG torch.