Lincoln Electric IM753 RANGER 9 - Manual (Page 22)

B-5 OPERATION B-5
RANGER 9
WELDING PROCESSES
STICK (Constant Current) Welding
Connect welding cables to the "TO WORK ” and
"ELECTRODE ” studs. Start the engine. Set the
"POLARITY ” switch to the desired polarity. Set the
output “ CONTROL ” or remote output control to max
(10) and the “ RANGE ” switch to the setting that is
closest to the recommended current for the electrode
being used and make a trial weld. A fine adjustment of
the welding can be made by adjusting the output
“ CONTROL ” or remote control. For the best arc stabil-
ity, always use setting that results in the highest set-
ting of the output or remote control and the lowest set-
ting of the
“ RANGE ” switch.
The Ranger 9 can be used with a broad range of AC
and DC stick electrodes. See
“ Welding Tips 1 ”
included with the Ranger 9 for electrodes within the
rating of this unit and recommended welding currents
of each. See the following table for welding current
ranges:
CURRENT RANGES ( AC and DC STICK
WELDING -5 to 10 ON CONTROL DIAL)
TIG ( Constant Current) Welding
The Ranger 9 can be used in a wide variety of AC and
DC Tungsten Inert Gas (TIG) welding applications for
AC TIG welding up to 200 amps and DC TIG welding
up to 250 amps.
The K930-1 TIG Module installed on a Ranger 9 pro-
vides high frequency and shielding gas control for AC
and DC GTAW (TIG) welding processes. The TIG
Module allows full range output control. After flow time
is adjustable from 0 to 55 seconds.
When using the Ranger 9 for AC TIG welding of
aluminum, the TIG Module is to be set for CONTINU-
OUS HF. The following settings and electrodes are
recommended:
When AC TIG welding, the actual maximum welding
current is 40 to 80 amps higher than the current
marked on the RANGE SWITCH dial. This is a result
of a lower effective reactance due to the natural rectifi-
cation that occurs with the AC TIG welding process.
WIRE FEED (Constant Voltage) Welding
The Ranger 9 can be used with a broad range of flux-
cored wire (Innershield and Outershield) electrodes
and solid wires for MIG welding. (gas metal arc welding)
When using a wire feeder with contactor control, the
electrode will be
“ cold ” until the gun trigger is pressed.
To start the welding process, position the gun and
close the gun trigger. The contactor will close, the arc
will be initiated and the engine will accelerate to full
speed. To stop welding, release the gun trigger and
pull the gun away from the work. With the
“ IDLER ”
SWITCH ” in the “ AUTO ” position, the engine will go
back to low idle in approximately 12 seconds (when no
auxiliary power is drawn).
NOTE: The LN-7 and the LN-8 must operate in the
“ HIGH ” idle position.
SETTINGS FOR PURE TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER in.(mm) SETTINGS CURRENT RANGE
1/8(3.2) 90 , 120 100 - 200 Amps
3/32(2.4) 45 , 90 45 - 140 Amps
1/16(1.6) 45 , 90 45 - 100 Amps
SETTINGS FOR 1% THORIATED TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER in.(mm) SETTINGS CURRENT RANGE
1/8(3.2) 70, 90, 125, or 175 80 - 225 Amps
3/32(2.4) 50, 70, 90, or 125 50 - 180 Amps
1/16(1.6) 50, 70, or 90 45 - 120 Amps
RANGE SETTING ACTUAL
ON MACHINE CURRENT RANGE
45 25 t0 45 AMPS
90 50 to 90 AMPS
120 60 to 120 AMPS
160 80 to 160 AMPS
200 100 to 200 AMPS
250 140 to 250 AMPS