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B-6
When in the TOUCH START TIG mode and when a
Amptrol is connected to the 6-pin Connector the OUT-
PUT dial is used to set the maximum current range of
the CURRENT CONTROL of the Amptrol.
The ARC CONTROL is not active in the TIG mode.
The Ranger 305D 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-frequency unit. If desired, the K930-2 TIG
Module can be used with the Ranger 305D. The set-
tings are for reference.
Ranger 305D 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
"REMOTELY 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 305D is used to set the maximum range of
the CURRENT CONTROL on the TIG module or an
Amptrol if connected to the TIG Module. (See Table
B.2.)
WIRE WELDING-CV
Connect a wire feeder to the Ranger 305D according to
the instructions in INSTALLATION INSTRUCTIONS
Section.
The Ranger 305D in the CV-WIRE mode, permits it to
be used with a broad range of flux cored wire
(Innershield and Outershield) 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/pinch control. The
proper setting depends on the procedure and operator
preference. Start with the dial set at 0.
Contact your local authorized Lincoln Electric
Distributor or the Lincoln Electric Company for specific
wires used on certain applications with this machine.
Also
for
additional
WWW.Lincolnelectric.com
OPERATION
information
contact
RANGER 305D
ARC GOUGING
The RANGER 305D can be used for limited arc goug-
ing. For optimal performance, set the MODE switch to
CC-STICK and the ARC CONTROL to +10.
Set the OUTPUT CONTROL knob to adjust output
current to the desired level for the gouging electrode
being used according to the ratings in the following
Table B.3.
TABLE B.3
Electrode Diameter
Current Range (DC, electrode
positive)
1/8" (3.2)
5/32"(4.0)
3/16"(4.8)
B-6
30-60 Amps
90-150 Amps
150-250 Amps
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