Spot Welding Instructions; Maintenance; General Maintenance; Consumable Maintenance - Craftsman 196.205680 Manual Del Usuario

Do not use 0.030 inch self-shielding flux-core
wires when using the burn-through method
unless the metal is VERY thin or excessive
filler metal build-up and minimal penetration
is acceptable.
Always select the HIGH heat setting with the
burn-through method and tune-in the wire
speed prior to making a spot weld.
2. The PUNCH AND FILL METHOD pro-
duces a weld with the most finished
appearance of the three spot weld meth-
ods. In this method, a hole is punched or
drilled into the top piece of metal and the
arc is directed through this hole to pene-
trate into the bottom piece. The puddle is
allowed to fill up the hole leaving a spot
weld that is smooth and flush with the sur-
face of the top piece.
Select the wire diameter, heat setting, and
tune-in the wire speed as if you were
welding the same thickness material with
a continuous bead.
3. The LAP SPOT METHOD directs the
welding arc to penetrate the bottom and
top pieces, at the same time, right along
each side of the lap joint seam.
Select the wire diameter, heat setting, and
tune-in the wire speed as if you were
welding the same thickness material with
a continuous bead.
SPOT WELDING INSTRUCTIONS
1. Select the wire diameter and heat setting
recommended above for the method of
spot welding you intend to use.
2. Tune in the wire speed as if you were
going to make a continuous weld.
3. Hold the nozzle piece completely perpen-
dicular to and about 1/4 inch off the work
piece.
4. Pull the trigger on the gun and release it
when it appears that the desired penetra-
tion has been achieved.
5. Make practice spot welds on scrap metal,
varying the length of time you hold the
trigger, until a desired spot weld is made.
6. Make spot welds on the actual work piece
at desired locations.
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GENERAL MAINTENANCE
This welder has been engineered to give
many years of trouble-free service providing
that a few very simple steps are taken to
properly maintain it.
1. Keep the wire drive compartment lid
closed at all times unless the wire needs
to be changed or the drive tension needs
adjusting.
2. Keep all consumables (contact tips, noz-
zles, and gun liner) clean and replace when
necessary. See CONSUMABLE MAINTE-
NANCE and TROUBLESHOOTING later in
this section for detailed information.
3. Replace power cord, ground cable,
ground clamp, or gun assembly when
damaged or worn.
4. Periodically clean dust, dirt, grease, etc.
from your welder. Every six months or as
necessary, remove the side panels from
the welder and air-blow any dust and dirt
that may have accumulated inside the
welder.
flWARNIN G
ELECTRIC SHOCK CAN KILL! To reduce
the risk of electric shock, always unplug the
welder from its ac power source before
removing side panels.
CONSUMABLE MAINTENANCE
IT IS VERY IMPORTANT TO MAINTAIN THE
CONSUMABLES TO AVOID THE NEED
FOR PREMATURE REPLACEMENT OF
THE GUN ASSEMBLY.
MAINTAINING THE CONTACT TIP
The purpose of the CONTACT TIP is to
transfer welding current to the welding wire
while allowing the wire to pass through it
smoothly.
Always use a contact tip stamped with the
same diameter as the wire it will be used with.
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.