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B-7
OPERATION
B-7
BREAK-IN PERIOD
Any engine will use a small amount of oil during its
“break-in” period. For the diesel engine on the
RANGER 300, break-in is about 50 running hours.
Check the oil every four hours during break-in.
Change the oil after the first 50 hours of operation,
every 100 hours thereafter. Change the oil filter at the
second oil change.
During break-in, subject the RANGER 300 to moder-
ate loads. Avoid long periods running at idle. Before
stopping the engine, remove all loads and allow the
engine to cool several minutes.
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TABLE B.1
TYPICAL RANGER 300 FUEL CONSUMPTION
* DLX model only
WELDING OPERATION
The RANGER 300 machines can deliver from 45 to
300 amps of constant current for AC/DC stick welding.
The Ranger 300 DLX can deliver 45 to 300 amps of
constant voltage current for DC semiautomatic wire
feed welding. The Ranger 300 D can deliver 45 to
200 amps of constant voltage current for DC semiau-
tomatic wire feed welding. AC/DC constant current
TIG welding is possible across the entire range from
45 to 300 amps although 250 amps is the maximum
recommended for AC TIG welding of aluminum.
Output can be adjusted by setting the POLARITY
SWITCH, the OUTPUT RANGE dial, and the FINE
CONTROL dial on the output control panel to the set-
tings that are best for your selected welding process.
RANGER 300 D AND 300 DLX
CAUTION
Low Idle - No Load
2000 RPM
High Idle - No Load
3700 RPM
AC CC Weld Output
300 Amps @ 25 Volts
DC CC Weld Output
300 Amps @ 25 Volts
DC CV Weld Output
300 Amps @ 28 Volts*
Auxiliary Power,
12,000 kVA
.30 gallons/hour
(1.0 liters/hour)
.60 gallons/hour
(2.2 liters/hour)
1.1 gallons/hour
(4.2 liters/hour)
1.2 gallons/hour
(4.6 liters/hour)
.90 gallons/hour
(3.6 liters/hour)
1.3 gallons/hour
(4.9 liters/hour)
Do not attempt to use this equipment until you
have thoroughly read the engine manufacturer’s
manual supplied with your welder. It includes
important safety precautions, detailed engine
starting, operating and maintenance instructions,
and parts lists.
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ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
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FUMES AND GASES can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to remove
fumes from breathing zone.
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MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
• Stop engine before servicing.
• Keep away from moving parts.
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WELDING SPARKS can cause fire or
explosion.
• Keep flammable material away.
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ARC RAYS can burn.
• Wear eye, ear and body protection.
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See additional warning information
throughout this operator’s manual.
WARNING