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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,
nozzles, and gun liner) clean and
replace when necessary. See
CONSUMABLE
MAINTENANCE
AND TROUBLESHOOTING
later in
this section for detailed information.
.
.
Replace power cord, ground cable,
ground clamp, or gun assembly
when damaged or worn.
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.
WARNING
ELECTRIC
SHOCK CAN KILL! To
reduce the risk of electric shock,
always unplug the welder from its ac
power source before removing side
panels.
MAINTENANCE
AND CLEANING
IT IS VERY
IMPORTANT
TO MAINTAIN
THE CONSUMABLES
TO AVOID
THE
NEED
FOR PREMATURE
REPLACEMENT
OF THE GUN
ASSEMBLY.
CAUTION
KEEP THE NOZZLE
CLEAN!
During the welding process, spatter
and slag will build up inside the
nozzle and must be cleaned out
periodically.
Failure
to clean
and/or
replace
the nozzle
in a timely
fashion
WILL
CAUSE
DAMAGE
TO
THE
FRONT-END
OF THE GUN
ASSEMBLY,
which
is NOT
REPLACEABLE.
The results
of the
inaction
will REQUIRE
THE
REPLACEMENT
OF THE
ENTIRE
GUN
ASSEMBLY.
1.
Stop welding and clean any
accumulated
slag or spatter from
the nozzle every 5 to 10 minutes of
welding time.
2.
When welding overhead,
if any
molten metal drips from the weld
puddle and falls into the nozzle,
STOP WELDING
IMMEDIATELY
and clean the nozzle.
.
If the slag cannot be thoroughly
cleaned from the nozzle, REPLACE
THE NOZZLE!
Failure to keep the nozzle adequately
cleaned can result in the following
problems:
A SHORTED
nozzle results when
spatter buildup bridges the insulation in
the nozzle allowing welding current to
flow through it as well as the contact tip.
When shorted, a nozzle will steal
welding current from the wire whenever
it contacts the grounded work piece.
This causes erratic welds and reduced
penetration.
In addition, a shorted nozzle
overheats the end of the gun which can
DAMAGE the front-end of the gun.
TESTING
FOR A SHORTED
NOZZLE
Arcing between the nozzle and the work
piece ALWAYS means the nozzle is
shorted, but this can be hard to detect
through the lens of a welding helmet.
The following testing method is another
way to tell if a nozzle is shorted.
With the welder unplugged from the ac
power source, touch the probes of an
ohmmeter or continuity tester to the end
of the contact tip and the outside of the
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