35
7.
Check that the wire passes through the center of
the outlet guide tube without touching the sides.
Loosen the locking screw and then loosen the outlet
guide tube retaining nut too make adjustment if
required. Carefully retighten the locking nut and
screw to hold the new position.
DIAGRAM FOR GUN
27
5.
Feed the wire through the drive roller and
into the outlet guide tube of the wire feeder.
6.
Lock down the top pressure roller and
apply a medium amount of pressure using
the tension adjustment knob.
INSTALLATION & OPERATION
2
§4.3.4 MIG Torch Liner Types and Information
MIG Torch Liners
The liner is both one of the simplest and most important components of a MIG gun. Its
sole purpose is to guide the welding wire from the wire feeder, through the gun cable and
up to the contact tip.
Steel Liners
Most MIG gun liners are made from coiled steel wire also known as piano wire, which
provides the liner with good rigidity and flexibility and allows it to guide the welding wire
smoothly through the welding cable as it bends and flex during operational use. Steel
liners are primarily used for feeding of solid steel wire, other wires such as Aluminum,
Silicon Bronze, Etc. will perform better using a Teflon or Polyamide line. The internal
diameter of the liner is important and relative to the wire diameter being used. The
(8) A simple check for the correct drive tension
is to bend the end of the wire over hold it about
100mm from your hand and let it run into your
hand, it should coil round in your hand without
stopping and slipping at the drive rollers,
increase the tension if it slips.
(9) The weight and speed of the wire spool turning
creates an inertia that can cause the spool to run on
and the wire loop over the side of the spool and tangle.
If this happens increase the pressure on the tension
spring inside the spool holder assembly using the
tension adjustment screw.
INSTALLATION & OPERATION
2
§4.3.4 MIG Torch Liner Types and Information
MIG Torch Liners
The liner is both one of the simplest and most important components of a MIG gun. Its
sole purpose is to guide the welding wire from the wire feeder, through the gun cable and
up to the contact tip.
Steel Liners
Most MIG gun liners are made from coiled steel wire also known as piano wire, which
provides the liner with good rigidity and flexibility and allows it to guide the welding wire
smoothly through the welding cable as it bends and flex during operational use. Steel
liners are primarily used for feeding of solid steel wire, other wires such as Aluminum,
Silicon Bronze, Etc. will perform better using a Teflon or Polyamide line. The internal
diameter of the liner is important and relative to the wire diameter being used. The
(8) A simple check for the correct drive tension
is to bend the end of the wire over hold it about
100mm from your hand and let it run into your
hand, it should coil round in your hand without
stopping and slipping at the drive rollers,
increase the tension if it slips.
(9) The weight and speed of the wire spool turning
creates an inertia that can cause the spool to run on
and the wire loop over the side of the spool and tangle.
If this happens increase the pressure on the tension
spring inside the spool holder assembly using the
tension adjustment screw.
8.
A simple check for the correct drive
tension is to bend the end of the wire over
hold it about 100mm from your hand and let
it run into your hand, it should coil round in
your hand without stopping and slipping at
the drive rollers, increase the tension if it slips.
9.
The weight and speed of the wire spool
turning creates an inertia that can cause the
spool to run on and the wire loop over the
side of the spool and tangle. If this happens
increase the pressure on the tension spring
inside the spool holder assembly using the
tension adjustment screw.
DIAGRAM FOR GUN
27
Summary of Contents for Evolution MTS500 DP
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