Tweco 500SP PowerMaster - Manual (Page 38)

POWERMASTER 320SP, 400SP, 500SP
3-12 March 16, 2007
3.10 Installing A New Wire Conduit
1. Be sure the MIG gun cable is arranged in a straight
line, free from twists, when installing or remov-
ing a wire conduit. Remove the old conduit by first
removing the MIG gun nozzle, contact tip, insula-
tor and gas diffuser. Then loosen Allen screws in
the conductor tube and connector plug and pull
the old wire conduit out of the cable assembly
from the connector plug end.
2. To install a new conduit, first inspect the o-ring
gas seal on the conduit for cuts or damage. Start
from the connector plug end of the assembly and
begin pushing the conduit through the connector
plug, cable assembly and into the gun. If the con-
duit should lodge along the way, gently whip or
work the cable assembly to aid forward move-
ment.
When the conduit stop meets the end of the con-
nector plug and the new raw end extends through
the end of the conductor tube on the welding gun,
tighten the Allen screw in the connector plug onto
the conduit to prevent its backward movement.
NOTE
When the conduit is fully inserted into the
cable assembly and the conduit stop is
firmly against the Connector Plug, the “raw
end” of the conduit will protrude out of
the open end of the gun conductor tube.
Trim the conduit as shown below. The
trimmed end which seats in the Gas
Diffuser must be filed and reamed smooth
on the inside and outside radii so wire feed
will not be obstructed.
3. Replace Gas Diffuser, Contact Tip, Insulator and
Nozzle.
4. Tighten the Allen screw in the conductor tube.
CAUTION
Do not over tighten the conductor tube
screw as this action will result in the
distortion of the conduit and will lead to
wire feedability problems.
CONDUCTOR TUBE
CONDUIT LINER
CONDUIT LINER
1 1/16"
(27mm)
Art # A-07921
REMOVE
CONSUMABLES
ALLEN SCREW
O-RINGS
ALLEN SCREW
CONNECTOR PLUG