Select Suitable Location, Stacking | Lincoln Electric IM756-A

A-3	INSTALLATION	A-3

SELECT SUITABLE LOCATION

Place the machine on a secure, level surface or rec- ommended undercarriage. The machine may topple over if this procedure is not followed. To minimize over heating, locate the welder in a dry location where there is free circulation of clean air. Do not place on com- bustible surfaces.

STACKING

Machines cannot be stacked.

CHANGING POLARITY

1.For Negative Polarity Welding (DC-): Refer to Figure A.2. As delivered, the machine is wired for Negative polarity with the gun cable connected to the Negative (-) output terminal and the work cable to the Positive (+) output terminal. Make sure that both thumbscrews are tight. This is the typical con- figuration for Flux Cored Welding (FCAW).

FIGURE A.2	WORK CABLE
	WORK CABLE
	GUN CABLE

GUN CABLE

WORK CABLE

2.For Positive Polarity Welding (DC+): Refer to Figure A.3. To wire for Positive polarity, connect the gun cable to the Positive (+) output terminal and the work cable to the Negative (-) terminal. This is the typical configuration for the Metal Inert Gas (MIG) process. Make sure that both thumbscrews are tight.

(FIGURE A.3)	GUN CABLE
	WORK CABLE

GUN CABLE

WORK CABLE

INPUT CONNECTIONS

(FIGURE A.4)

GAS INLET FITTING

POWER INPUT CABLE

Refer to Figure A.4.

The machine has two input connections, the power input cable and the gas inlet fitting. The power input cable and gas inlet fitting are located on the rear.