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The TOUCH START TIG setting of the MODE switch is for
DC TIG (Tungsten Inert Gas) welding. To initiate a weld, the
CONTROL dial is first set to the desired current and the tung-
sten is touched to the work. During the time the tungsten is
touching the work there is very little voltage or current and in
general, no tungsten contamination. Then, the tungsten is
gently lifted off the work in a rocking motion, which establish-
es the arc.
The ARC CONTROL is not active in the TIG mode. To STOP
a weld, simply pull the TIG torch away from the work. When
the arc voltage reaches approximately 30 Volts the arc will go
out and the machine will reset the current to the Touch Start
level. To reinitiate the arc, re touch the tungsten to the work
and lift. Alternatively, the weld can be stopped by releasing
the Amptrol or arc start switch.
The RANGER® 305LPG can be used in a wide variety of DC
TIG welding applications. In general the ‘Touch Start’ feature
allows contamination free starting without the use of a Hi-fre-
quency unit. If desired, the K930-2 TIG Module can be used
with the RANGER® 305LPG. The settings are for reference.
RANGER® 305LPG settings when using the K930-2 TIG
Module with an Amptrol or Arc Start Switch:
• Set the MODE Switch to the TOUCH START TIG setting.
• Set the "IDLER" Switch to the "AUTO" position.
• Set the "WELDING TERMINALS" switch to the "REMOTE-
LY CONTROLLED" position. This will keep the "Solid
State" contactor open and provide a “cold” electrode until
the Amptrol or Arc Start Switch is pressed.
When using the TIG Module, the OUTPUT control on the
RANGER® 305LPG is used to set the maximum range of the
CURRENT CONTROL on the TIG module or an Amptrol if
connected to the TIG Module.
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Connect a wire feeder to the RANGER® 305LPG according
to the instructions in INSTALLATION INSTRUCTIONS
Section.
The RANGER® 305LPG in the CV-WIRE mode, permits it to
be used with a broad range of flux cored wire (Innershield
and outreached) electrodes and solid wires for MIG welding
(gas metal arc welding). Welding can be finely tuned using
the ARC CONTROL. Turning the ARC CONTROL clockwise
from –10 (soft) to +10 (crisp) changes the arc from soft and
washed-in to crisp and narrow. It acts as an inductance con-
trol. The proper setting depends on the procedure and oper-
ator preference. Start with the dial set at 0.
Listed below are some wires suitable for use on this
machine:
• Innershield - NR-311, NS-3M, NR-207, NR-203 Ni 1%,
NR-212.
• outreached - 0S-70, 0S-71M, 0S-71 ELITE.
• Solid wires for MIG welding - .035 (0.9 mm), and
.045 (1.1 mm), Super Arc L-50 and L-56, .035 (0.9 mm) and
.045 (1.1 mm) Blue Max MIG 308 lw.
Contact your local authorized Lincoln Electric Distributor or the
Lincoln Electric Company for specific wires used on certain
applications with this machine.
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0.040 (1.0) 15-80 (3) 5-10 (3-5) 5-10 (3-5)
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