Lincoln Electric RANGER 8 LPG, Operator'S Manual

Page: 19 / 38

12 12
RANGER 8 LPG
After running at high engine speed for 10-14 seconds,
the engine will go to low idle.
Allow the engine to warm up by letting it run at low idle
for a few minutes.
Stopping the Engine
Remove all welding and auxiliary power loads and
allow engine to run at low idle speed for a few minutes
to cool the engine.
NOTE: Backfiring may occur if
engine is not allowed to cool at low idle before stop-
ping.
Stop the engine by placing the “Engine” switch in the
“OFF” position. Close the fuel valve on the LPG sup-
ply cylinder.
Always de-pressurize the LPG supply hose at the
end of each days use.
Close the valve on the LPG
supply cylinder while the engine is running at high
idle. The engine will continue to run for about 30 sec-
onds and then stop. After the engine stops, place the
engine “ON - OFF” switch in the “OFF” position.
Break-in Period
It is normal for any engine to use a greater amount of
oil until the break-in is accomplished. Check the oil
level twice a day during the break-in period (approxi-
mately 50 running hours)).
IMPORTANT: IN ORDER TO ACCOMPLISH THIS
BREAK-IN, THE UNIT SHOULD BE
SUBJECTED TO MODERATE
LOADS, WITHIN THE RATING OF
THE MACHINE. AVOID LONG IDLE
RUNNING PERIODS. REMOVE
LOADS AND ALLOW ENGINE TO
COOL BEFORE SHUTDOWN.
The engine manufacturer’s recommendation for the
running time until the first oil change is 5 hours.
The oil filter is to be changed at the second oil
change. Refer to the Engine Owner’s Manual for
more information.
Welding Process
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
“RANGE” switch to a setting that is equal to or slightly
greater than the desired welding current. (The
“RANGE” dial marking indicates the maximum current
for that range). Fine adjustment of the welding current
is made by adjusting the output “CONTROL” or
remote control.
For best arc stability, use settings
5 through 10.
The Ranger 8 can be used with a broad range of AC
and DC stick electrodes. See “Welding Tips 1”
included with the Ranger 8 for electrodes within the
rating of this unit and recommended welding currents
of each.
Welding Current Ranges are shown in the following
tables:
AC CURRENT RANGES (STICK WELDING - 5 TO 10
ON CONTROL DIAL)
DC CURRENT RANGES (STICK WELDING - 5 TO
10 ON CONTROL DIAL)
TIG (Constant Current) Welding
The TIG Module (K930-1) installed on a Ranger 8 provides high
frequency and shielding gas control for AC and DC GTAW
(TIG) welding processes. The TIG Module allows full range out-
put control . Afterflow time is adjustable from 0 to 55 seconds.
When using the Ranger 8 for AC TIG welding of aluminum, the
TIG Module is to be set for CONTINUOUS HF. The following
settings and electrodes are recommended.
Range Current
Setting Range
50 30 - 50 Amps
70 40 - 70 Amps
90 50 - 90 Amps
125 70 - 125 Amps
175 90 - 175 Amps
MAX 120 - 225 Amps
Range Current
Setting Range
50 30 - 50 Amps
70 40 - 70 Amps
90 50 - 90 Amps
125 70 - 125 Amps
175 90 - 175 Amps
MAX 120 - 210 Amps
SETTINGS FOR PURE TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER (in.) SETTINGS CURRENT RANGE
1/8 70, 90, or 125 80 - 150 Amps
3/32 50, 70, or 90 45 - 130 Amps
1/16 50, or 70 40 - 80 Amps
SETTINGS FOR 1% THORIATED TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER (in.) SETTINGS CURRENT RANGE
1/8 70, 90, 125, or 175 80 - 225 Amps
3/32 50, 70, 90, or 125 50 - 180 Amps
1/16 50, 70, or 90 45 - 120 Amps