Lincoln Electric SVM150-A service manual Connection of the LN-742 to Ranger 250 see Figure C.7

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

C-9			C-9
	ACCESSORIES
	CONNECTION OF THE LN-742 TO THE
			CAUTION
	RANGER 250 (SEE FIGURE C.7.)
		An increase of the high idle engine RPM by changing
	1. Shut the welder off.
		the governor setting or overriding the throttle linkage
	2. Connect the electrode cable from the LN-742 to
		will cause an increase in the AC auxiliary voltage. If
	the “+” terminal of the welder. Connect the work	this voltage goes over 140 volts, wire feeder control cir-
	cable to the “-” terminal of the welder.	cuits may be damaged. The engine governor setting is
	NOTE: Figure C.7 shows the electrode connected for	preset at the factory – do not adjust above RPM spec-
		ifications listed in this manual.
	positive polarity. To change polarity, shut the welder off
	and reverse the electrode and work cables at the out-
	put terminals.	7. Place the “WELD TERMINALS” switch in the
	NOTE: Welding cable must be sized for current and
			“REMOTELY CONTROLLED” position.
	duty cycle of application.	8.	Adjust wire feed speed and voltage at the LN-742.
	3. Connect the K619 Control Cable to the 14-pin
		9.	Set the “ARC” control to “0” initially and adjust to
	amphenol on the Ranger 250 and the input cable

plug on the LN-742. suit.

4.Set the VOLTMETER” switch to “+” or “-” depend- ing on the polarity chosen.

5.Set the “MODE” switch to the “CV-WIRE” position.

6.Place the “IDLER” switch in the “AUTO” or “HIGH” position as desired.

FIGURE C.7 – RANGER 250/LN-742 CONNECTION DIAGRAM

-

+–

RANGER 250