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SP-100
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AFTER EACH SPOOL OF WIRE
FEED
• Remove contact tip and clean inside diam-
eter with short piece of wire
• Clean cable liner – when rough and erratic
wire feeding occur.
AFTER FEEDING 50# OF FLUX
CORED WIRE OR 300# OF SOLID
WIRE
• Unplug machine or turn power switch to
OFF – “O” position. Remove gun and
cable from machine.
• Remove gas nozzle and contact tip from
gun
• Lay cable out straight - blow out gently
with compressed air. Bend cable back and
forth – blow out again – Repeat until clean.
Excessive pressure at start may cause
the dirt to form a plug.
PERIODICALLY AS REQUIRED
• Unplug machine or turn power switch to
OFF – “O” position.
• Blow dirt out of the welder with low pres-
sure air to eliminate excessive dirt and
dust buildup that could cause welder to
run hot.
• Blow dirt out of: Rectifier & Fan Motor
Assembly; PC Board located on Case
Side Assembly; and Center Assembly
components. Refer to Figure D.4.
• Vacuum accumulated dirt from gear-
box and wire feed section. Refer to
Figure D.4
• Inspect the incoming guide tube and
clean inside diameter if necessary.
Replace when excessively worn.
• Replace Contact Tip – when hole is
enlarged or elongated (refer to Changing
Contact Tip, below).
D-1
MAINTENANCE
SAFETY PRECAUTIONS
ELECTRIC SHOCK can
kill.
• Disconnect input power
by removing plug from
receptacle before work-
ing inside SP-100.Use
only grounded recepta-
cle. Do not touch electri-
cally “hot” parts inside
SP-1 00.
• Have qualified person-
nel do the maintenance
and trouble shooting
work.
ITEMS REQUIRING NO
MAINTENANCE
• Drive Motor and Gearbox – Lifetime
lubrication
• Fan Motor- Lifetime lubrication.
• Wire Reel Spindle – Do NOT lubricate
shaft.
ROUTINE AND PERIODIC
MAINTENANCE
BEFORE EACH USE
• Check over machine and accessories for
any obvious condition that may prevent
safe performance or operation, repair or
replace items as necessary to correct any
abnormal condition.
AFTER 5 MINUTES OF WELDING
or when spatter accumulates in
nozzle
• Clean nozzle to avoid bridging between
nozzle and contact tip which results in
shorted nozzle, poor welds and overheat-
ed gun. Hint: Anti-stick spray or gel avail-
able from a welding supply distributor may
reduce buildup and aid in spatter removal.
WARNING
CAUTION