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OPERATION
Read entire operation section before
operating the SP-175T.
ELECTRIC SHOCK can kill.
• Do not touch electrically live
parts or electrode with skin or wet
clothing. Insulate yourself from
work and ground.
• Always wear dry insulating
gloves.
FUMES AND GASES can be
dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
WELDING SPARKS can
cause fire or explosion.
• Keep flammable material away.
• Do not weld on closed containers.
ARC RAYS can burn eyes
and skin.
• Wear eye, ear and body protec-
tion.
Observe all safety information throughout
this manual.
WARNING
GENERAL DESCRIPTION
The SP-175T is a complete semiautomatic constant
voltage DC portable arc welder. Included is a tap-
switch controlled, single phase constant voltage trans-
former/rectifier power source and a wire feeder with
welding gun for feeding .023" (0.6 mm) through .030"
(0.8 mm) solid steel electrode. Optional kits are avail-
able for .035" (0.9 mm) and .045" (1.2 mm)
Innershield
®
NR-211-MP.
It is ideally suited for individuals having access to 230
or 208 volt 60 Hz AC input power and want the ease
of use, quality and dependability of both gas metal arc
welding or GMAW (also known as MIG welding) and
the Innershield
®
process (self-shielded flux-cored or
FCAW). A convenient chart is mounted inside the wire
feed section door for setting welding procedures for 24
gauge (.60 mm) through 5/16" (8.0 mm) mild steel.
The machine is rugged and reliable and has designed
for dependable service and long life.
RECOMMENDED PROCESSES
The SP-175T can be used for welding mild steel using
the GMAW, single pass, process which requires a
supply of shielding gas or it can be used for the self-
shielded, Innershield
®
process (FCAW).
OPERATIONAL FEATURES AND
CONTROLS
The SP-175T has the following controls as standard:
Power ON/OFF Switch, Voltage Control, Wire Speed
Control, Trigger Switch, and a Circuit Breaker.
DESIGN FEATURES AND
ADVANTAGES
● Reconnectable for 230 volt or 208 volt single phase
60 Hz input power.
● “Cold electrode” until gun trigger is pressed for an
added measure of safety.
● Overload protection — incorporates both a thermo-
stat and a circuit breaker.
● Quality wire drive with electronic overload protec-
tion.
● “Quick Release” idle roll pressure arm is easily
adjusted.
● Reversible, dual groove drive roll, shipped ready
to feed .023"/.025" (0.6 mm) diameter wire. The
drive roll is easily reversed to feed .030" (0.8 mm)
diameter solid wire and .035" (0.9 mm) flux-cored
diameter wire. Optional drive roll included in .045"
(1.2 mm) Innershield
®
welding kit must be installed
to feed .045" (1.2 mm) flux-cored wire.
SP-175T
SAFTEY PRECAUTIONS