Tweco VAF4 Transmig - Manual (Page 54)

TRANSMIG VAF4
INSTALLATION, OPERATION AND SETUP 3-36 Manual 0-5231
2. Open downstream equipment valves to drain the lines. Bleed gas into a well ventilated area and away from
any ignition source.
3. After gas is drained completely, disengage adjusting screw and close downstream equipment valves.
4. Before transporting cylinders that are not secured on a cart designed for such purposes, remove regula-
tors.
3.21 Wire Feeder Set Up MIG (GMAW) Welding with Gas Shielded 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 negative welding terminal (-) [positive welding terminal(+) for flux cored electrode
wire]. 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.
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.
Secure the welding grade shielding gas cylinder in an upright position by chaining it to a suitable sta-
tionary support to prevent falling or tipping.
C. Position a gas cylinder on the rear tray of the Power Source and lock securely to the Power Source cylinder
bracket with the chain provided. If this arrangement is not used or the Power Source is not fitted with a gas
cylinder tray then ensure that the gas cylinder is secured to a building pillar, wall bracket or otherwise securely
fixed in an upright position.
D. 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 positive welding terminal
(+) [negative welding terminal (-) for flux cored electrode wire]. If in doubt, consult the electrode wire manu-
facturer. 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 19 PIN socket on the Power Source as applicable.
NOTE
For Transmig 400i or other power sources fitted with a 14 pin control socket, use interconnection
W4016000 to connect to the power source 14 pin control socket.
C. Fit the gas regulator and flowmeter to the gas cylinder then connect the gas hose from the rear of the Wirefeeder
to the flowmeter outlet.
D. 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