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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.
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
Page 18
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