Lincoln Electric SP-100 service manual General Description, Off, Recommended Processes

OPERATION B-2

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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.

●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.

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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.

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 —	I	On
When the power is on the
fan motor will run and air will
be exhausted out the louvers	O Off
in the front of the machine.
The welding output and wire

feeder remain off until the gun trigger is pressed.

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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.

2.Voltage Control — A contin- uous control that gives full range adjustment of power source output voltage. 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.

V

Arc Volts

oo

Wire Speed

SP-100