Lincoln Electric SVM175-A service manual TIG Welding ARC Gouging, Auxiliary Power, Wire WELDING-CV

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B-8		OPERATION				B-8
TIG WELDING			ARC GOUGING
The TOUCH START TIG setting of the MODE switch is for DC			The RANGER 305D can be used for limited arc goug-
TIG (Tungsten Inert Gas) welding. To initiate a weld, the OUT-			ing. For optimal performance, set the MODE switch to
PUT control is first set to the desired current and the tungsten is			CC-STICK and the ARC CONTROL to +10.
touched to the work. During the time the tungsten is touching the			Set the OUTPUT CONTROL knob to adjust output cur-
work there is very little voltage or current and, in general, no
tungsten contamination. Then the tungsten is gently lifted off the			rent to the desired level for the gouging electrode being
work in a rocking motion, which establishes the arc.			used according to the ratings in the following Table B.3
The ARC CONTROL is not active in the TIG mode.				TABLE B.3 - CURRENT RANGE
The Ranger 305D can be used in a wide variety of DC TIG weld-				PER ELECTRODE DIAMETER
ing applications. In general the “Touch Start” feature allows con-
			Carbon Diameter			Current Range (DC, electrode
tamination-free starting without the use of a Hi-frequency unit. If
desired, the K930-2 TIG Module can be used with the Ranger						positive)
Ranger 305D settings when using the K930-2 TIG Module with			1/8"			75-140 Amps
305D.	See Table B.2 for reference settings.
an Amptrol or Arc Start Switch:
			5/32"			90-150 Amps
a. Set the MODE Switch to the TOUCH START TIG setting.			3/16"			200-250 Amps
b. Set the “IDLER” Switch to the “AUTO” position.
c. Set the “WELD TERMINALS” switch to the “REMOTELY			AUXILIARY POWER
CONTROLLED” position. This will keep the solid state con-
tactor open and provide a “cold” electrode until the Amptrol or
Arc Start switch is pressed					WARNING
When using the TIG Module, the OUTPUT control on the Ranger			Be sure that any electrical equipment plugged into the generator
305D is used to set the maximum range of the CURRENT.			AC power receptacles can withstand +/- 10% voltage and a +/-
			3% frequency variation.
WIRE WELDING-CV			Start the engine and set the IDLER control switch to
Connect a wire feeder to the RANGER 305 D according to the			-----------------------------------------------------------------------
			the desired operating mode. Full power is available
instructions in INSTALLATION INSTRUCTIONS Section.			regardless of the welding control settings as long as no
In the CV-WIRE mode, the Ranger 305D can be used with a			welding current is being drawn.
broad range of flux cored wire (Innershield and Outershield)			The auxiliary power of the Ranger 305D consists of
electrodes and solid wires for MIG welding (gas metal arc weld-
ing). Welding can be finely tuned using the ARC CONTROL.			two 20 amp-120 VAC (5-20R) duplex receptacles and
Turning the ARC CONTROL clockwise for -10 (soft) to +10			one 50 amps 120/240 VAC (14-50R) receptacle. The
(crisp) changes the arc from soft and washed-in to crisp and nar-			240 VAC receptacle can be split for single-phase 120
row.	It acts as an inductance control. The proper setting		VAC operation.
depends on the procedure and operator preference. Start with			The auxiliary power capacity is 10,000 watts peak,
the dial set at 0.			9,500 watts of continuous 60 Hz, singe-phase power.
Some recommended Innershield electrodes are: NR-311, NS-			The auxiliary power capacity rating in watts is equiva-
			lent to volt-amperes at unity power factor. The maxi-
3M, NR-203 Ni 1%, NR-204H. Recommended Outershield elec-			mum permissible, 40 amps continuous current of the
trodes are :0S-70, OS-71M.			240 VAC output is 42 amps maximum.
Some recommended solid wires for MIG welding are: .035			NOTE: Machines with code numbers of 11121 and
(0.9mm), and .045 (1.1mm), L-50 and L-56, .035 (0.9 mm) and			higher are equipped with GFCI duplex receptacles. If
.045 (1.1mm) Blue Max MIG 308 LS.			a GFCI receptacle is “tripped”, it will not reset unless
For any electrodes, including those above, the procedure should			it is receiving nearly full voltage from the generator; for
			this reason, the engine must be running at high RPM
be kept within the rating of the machine.			before resetting a GFCI.
		RANGER 305D