Lincoln Electric IM756-A manual Welding Capability, Limitations, Controls and Settings

B-2 OPERATION B-2

WELDING CAPABILITY

The machine is rated at 70 amps, 17 volts, at 20% duty cycle on a ten minute basis. It is capable of high- er output currents at lower duty cycles.

LIMITATIONS

The machine is recommended for welding on mild steel up to 1/8” thick.

CONTROLS AND SETTINGS

FIGURE B.1

4

3

1

2

Refer to Figure B.1.

1.Power ON/OFF Switch -When the power is ON the welding output and wire feeder are ON (“hot”) when the gun trigger is pressed.

2.Low / High Heat Range Switch. -A rocker switch control that gives low or high coarse range adjust- ment of the power source output voltage.

3.1 – 2 Fine Heat Adjustment Switch. -Allows fine adjustment of the voltage within the selected Low or High output range.

4.Wire Speed Control. -Controls the wire feed speed. Wire speed is not affected when changes are made in the voltage control.

TABLE B.1 – MIG WELDING MATERIAL/GAS COMBINATIONS

Material	Gas
Carbon Steel	CO2 or Argon/CO2
Low Alloy Steel	CO2 or Argon/CO2

FLUX-CORED (INNERSHIELD) WELDING

The recommended electrode for the flux-cored, self- shielded process is 0.035” (0.9 mm) diameter Lincoln Innershield NR-211-MP on 2 lbs. (.9 kg) spools.

SEQUENCE OF OPERATIONS

WIRE LOADING AND THREADING

Refer to Figure B.2.

Turn machine power switch to the OFF (“0”) position before working inside the wire feed enclosure.

Make sure that the wire feed drive roll and the contact tip of the gun match the diameter and type of wire used.

1.Push the spool onto the spindle so that the wire feeds off the bottom of the spool, toward the drive roll.

2.Push the spool spacer onto the spindle, against the spool.

3.Slide the spring onto the spool, then press on the spool lock, turning it clockwise to lock the spool assembly onto the spindle.

FIGURE B.2

	SPOOL
	SPACER
SPINDLE
	SPOOL
SPOOL	LOCK
	SPRING

WELDING OPERATIONS

PROCESS GUIDELINES

MIG WELDING

Table B.1 shows the recommended material/gas combinations for MIG welding with solid electrodes.

HANDY MIG