Systematics , Inc. 1025 Saunders Lane West Chester, PA. 19380
7
WIRE FEED PRESSURE ROLL ADJUSTMENT
The wire feed pressure roll is
adjusted to the proper setting at
the factory, prior to delivery. It
may be necessary to readjust the
setting as components "seat in" or
when changing to a different diame-
ter wire. To check for proper roll
pressure, hold the torch in one
hand and the wire between two
fingers of the other hand. Pull the
torch trigger. If the wire contin-
ues to feed when firm pressure is
applied to the wire, the pressure
roll adjusting nut should be backed
off until the feed rolls start to
slip. If the wire will not feed
with very little pressure applied,
the pressure roll adjusting nut
should be tightened.
OPERATION
The following operating instruc-
tions and detailed setup proce-
dures enable an operator without
previous experience to produce
quality fusion welds. It is recom-
mended that an operator without
prior experience with this equip-
ment, first practice on scrap metal
of the same type and thickness as
the material to be welded.
OPERATING SEQUENCE
1. Make sure that the pieces of
metal to be welded are free of
grease, dirt, paint and scale.
Use a wire brush to remove paint
and scale. Paint must be com-
pletely removed to bare metal.
Grease and oil could burn and
cause a fire or safety hazard.
Failure to clean the metal
properly will result in erratic
and porous welds.
2. Install the unit as directed in
the installation instructions
and make sure the work clamp is
firmly attached to a cleaned
area on the workpiece to be
welded.
3. Open the shielding gas cylinder
valve. Press the torch trigger
and listen for gas flow. Adjust
the gas flow rate to 30 CFH for
steel and 40 CFH for aluminum.
The welding wire will feed
when the trigger is actu-
ated. Take care that the
wire is not directed to
hit yourself or anything
that is grounded to the
ground wire on the welder.
CAUTION
PRESSURE ROLL
ADJUSTING NUT
PRESSURE
ROLL
PRESSURE
ROLL ARM
DRIVE
ROLL
TORCH SELECTOR CABLE
Plug the torch selector cable
into the Positive (+) terminal on
the machine(see "Process Selec-
tion" on page 8 for further de-
tails).
WORK (GROUND) CABLE
Uncoil the work cable and plug it
into the negative (-) terminal on
the machine.
FIGURE 7.
PRESSURE ROLL ADJUSTMENT