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GENERAL DESCRIPTION
The SP-100, Type K462, is a complete semiautomatic
constant voltage DC arc welding machine. Included is
a solid state controlled, single phase constant voltage
transformer/ rectifier power source and a wire feeder
for feeding solid steel electrode and cored electrode.
The SP-100 is ideally suited for individuals having
access to 115 volt AC input power, and wanting the
ease of use, quality and dependability of both gas
metal arc welding or GMAW (also known as MIG
welding) and the Innershield electrode process (self
shielded flux cored or FCAW). The SP-100 is a
rugged and reliable machine that has been designed
for dependable service and long life.
RECOMMENDED PROCESSES
The SP-100 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 electrode process (FCAW). The
SP-100 is configured for use with the GMAW (MIG)
process as delivered from the factory.
OPERATIONAL FEATURES AND
CONTROLS
The SP-100 has the following controls as standard:
Power ON/OFF Switch, Voltage Control, Wire Speed
Control, and a Circuit Breaker.
DESIGN FEATURES AND
ADVANTAGES
Operates on 115 volt input — no special wiring
required.
Solid state output control.
"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.
Easy-to-set continuous range controls for precise
setting of arc voltage and wire speed.
Continuous voltage control.
"Quick Release" idle roll pressure arm is easily
adjusted.
OPERATION
Reversible, dual groove drive roll. Drive roll will
feed .023-.025" (0,6- 0,9 mm) diameter wire.
Accommodates both 8" (200 mm) diameter and 4"
(100 mm) diameter spools of wire.
No external shielding gas is required when used
with Lincoln Innershield .035" (0,9 mm) NR®-211-
MP electrode.
Easy to change polarity.
WELDING CAPABILITY
The SP-100 is rated at 90 amps, 18 volts, at 20% duty
cycle on a ten minute basis. It is capable of higher
duty cycles at lower output currents.
LIMITATIONS
Arc Gouging cannot be performed with the SP-100.
The SP-100 is not recommended for pipe thawing.
CONTROLS AND SETTINGS
Refer to Figure B.1a.
1. Power ON/OFF Switch —
When the power is on the
fan motor will run and air will
be exhausted out the louvers
in the front of the machine.
The welding output and wire
feeder remain off until the
gun trigger is pressed.
2. Voltage Control — A contin-
uous control that gives full
range adjustment of power
source
Voltage can be adjusted
while welding.
3. Wire Speed Control —
Controls the wire feed speed
from 50 – 400 in /min (1.3 –
10 m/min). The control can
be preset on the dial to the
setting specified on the SP-
100 Application Guide locat-
ed on the inside of the wire
feed section door. Wire
speed is not affected when
changes are made in the
voltage control.
I
O
output
voltage.
Arc Volts
o | o
Wire Speed
B-2
On
Off
V
SP-100
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