Lincoln Electric IM724 manual Welding Capability, Limitations, Controls and Settings

B-2 OPERATION B-2

●No external shielding gas is required when used with Lincoln Innershield .035” (0.9 mm) NR®-211- MP electrode.

●Accommodates both 4” (100 mm) diameter and 8” (200 mm) diameter spools of wire.

●Accepts optional Spot/Stitch Timer Kit.

WELDING CAPABILITY

The SP-135T is rated at 90 amps, 19 volts, at 20% duty cycle on a ten minute basis. It is capable of high- er output currents at lower duty cycles.

LIMITATIONS

Arc Gouging cannot be performed with the SP-135T. The SP-135T is not recommended for pipe thawing or TIG welding.

CONTROLS AND SETTINGS

5. Gun Trigger - Activates welding output, wire feed,

and gas solenoid operation. Releasing the trigger

deactivates welding and simultaneously activates

the “burnback” function so that the welding wire

does not stick in the weld puddle.

6. Optional K695-1 Spot/ Stitch Timer Kit Controls

(see ACCESSORIES section) - If present, replaces

Blank Panel Assembly located on the center panel

inside the case door:

Mode Switch - Selects between Spot, Stitch, or

Seam (normal welding) mode. Spot mode welds

for an adjustable length of time (set by Time

Control; see below) and then stops, whenever the

gun trigger is depressed and held. Stitch mode

cycles between welding and not welding for an

adjustable length of time (also set by Time Control)

while the gun trigger is depressed. In Seam mode

the machine will weld continuously while the gun

trigger is depressed. Releasing the gun trigger in

any of the three modes will interrupt welding imme-

diately.

Refer to Figure B.1a.

1.Control 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 weld- ing output and wire feeder remain off until the gun trigger is pressed.

2.Wire Speed Control — Controls the wire feed speed from 50 – 300 in /min (1.3 – 7.6 m/min). The control can be preset on the dial to the setting specified on the SP- 135T Application Chart located on the inside of the wire feed section door.

3.Voltage Control — A 4-posi- tion tap selector switch gives full range adjustment of power source output voltage. Do not switch while welding.

OFF

ON

WIRE SPEED

ARC VOLTS

Time Control - In Spot mode, controls spot mode

ON time between approximately .25 and 4.0 sec-

onds. In Stitch mode, controls stitch mode ON time

and OFF time simultaneously between .25 and 4.0

seconds each. This control is deactivated while in

Seam mode.

4.Circuit Breaker – Protects machine from damage if maximum output is exceeded. Button will extend out when tripped (Manual reset) Refer to Figure B.1b.

SP-135T