Set The Wire Drive Tension; Change Polarity - Clarke HOT SHOT SPOOL GUN WELDER FLUXCORE/MIG 135SG Mode D'emploi

16. Set the Drive Brake tension.
Note: It is necessary to release the Drive
Tensioner Arm while you are setting the Drive
Brake Tension. Make sure you return the Drive
Tensioner Arm to its locked position after
adjusting the Drive Brake Tension.
a) With one hand, turn the wire spool coun-
terclockwise - this will cause the wire to
feed through the gun assembly (and
continue turning it while adjusting the
tension on the spool).
b) With your free hand, tighten (turn clock-
wise) the drive brake adjustment knob.
c) Stop tightening when drag is felt on the
wire spool that you are turning, then stop
hand-turning the wire spool.
Note: If TOO MUCH tension is applied to the
wire spool, the wire will slip on the drive
roller or will not be able to feed at all. If TOO
LITTLE tension is applied, the spool of wire
will want to unspool itself. Readjust the drive
brake tension as necessary to correct for
either problem.
17. Trim the wire which is sticking out the
end of the spool gun to about 1" in
length.
18. Select a contact tip stamped with the
same diameter as the wire being used.
Note: Due to inherent variances in flux-cored
welding wire, it may be necessary to use a
contact tip one size larger than your flux core
wire if wire jams occur.
19. Slide the contact tip over the wire
(protruding from the end of the gun).
Thread the contact tip into the end of the
gun and hand-tighten securely.
20. Install the nozzle on the gun assembly.
For best results, coat the inside of the
nozzle with anti-stick spray or gel.
21. Cut off the excess wire that extends past
the end of the nozzle.
22. Replace the Wire Spool Casing cover
and tighten adjustment knob by turning it
clockwise.
23. Connect the welder power cord to the ac
power source. Turn the welder ON. Set
the VOLTAGE dial to the desired setting.
The VOLTAGE selector controls the weld
heat. There are four voltage (heat) selec-
tions available on this welder. Placing the
voltage dial in position A provides the
lowest voltage (heat). Placing the voltage
16
dial in position D provides the highest
voltage (heat).

SET THE WIRE DRIVE TENSION

WARNING
Arc flash can injure eyes! To reduce the
risk of arc flash, make certain that the wire
coming out of the end of the gun does not
come in contact with work piece, ground
clamp or any grounded material during the
drive tension setting process or arcing will
occur.
1. Open the Wire Drive Cover on the Spool
Gun.
2. Pull the trigger on the gun.
3. Turn the drive tension adjustment knob
clockwise, increasing the drive tension
until the wire seems to feed smoothly
without slipping.
4. Close the Wire Drive Cover on the Spool
Gun.
When set correctly, there should be no slip-
page between the wire and the drive roller
under normal conditions. If an obstruction
occurs along the wire feed path, the wire
should then slip on the drive roller.
After the tension is properly adjusted, the drive
tensioner arm may be unlocked and relocked
and no readjustment of the drive tension
adjustment knob will be necessary (unless the
diameter or type of wire is changed).

CHANGE POLARITY

This welder allows you the capability to
change the welding current polarity. You may
select either dc Straight (dc - Flux Cored) or
dc Reverse Polarity (dc + MIG). For welding
steel with solid wire, stainless steel, flux cored
hardfacing of steel, and silicon bronze welding
of steel, and aluminum select dc Reverse
Polarity (dc + MIG). When using self-shield-
ing, flux-core steel wire, use dc Straight
Polarity (dc - Flux Cored). Change the polarity
of your welder according to the following
procedure steps. Figure 14 shows what the
polarity block should look like for each
polarity setting.