Lincoln Electric IM833-C manual Welder Operation

B-4 OPERATION B-4

CAUTION

Operating the starter motor for more than 5 seconds can damage the motor. If the engine fails to start, release the switch and wait 10 seconds before opera- tion the starter again. Do NOT push the START button while the engine is running because this can damage the ring gear and/or the starter motor.

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NOTE: When starting a Ranger 250 for the first time, or after an extended period of time of not operating, it will take longer than normal because the fuel pump has to fill the fuel line and carburetor.

STOPPING THE ENGINE

Remove all welding and auxiliary power loads and allow the engine to run at low idle speed for a few min- utes to cool the engine.

CONSTANT CURRENT (CC-STICK) WELDING

The CC-STICK position of the MODE switch is designed for flat horizontal and vertical-up welding with all types of electrodes, especially low hydrogen. The output CONTROL dial adjusts the full output range for stick welding.

The ARC CONTROL dial sets the short circuit current (arc-force) during stick welding to adjust for a soft or crisp arc. Increasing the number from -10(soft) to +10(crisp) increases the short circuit current and pre- vents sticking of the electrode to the plate while weld- ing. This can also increase spatter. It is recommended that the ARC CONTROL be set to the minimum num- ber without electrode sticking. Start with the dial set at 0.

Stop the engine by placing the RUN-STOP in the STOP position.

NOTE: A fuel shut off valve is not required on the Ranger 250 because the fuel tank is mounted below the engine.

WELDER OPERATION

DUTY CYCLE is the percentage of time the load is being applied in a 10 minute period. For example, a 60% duty cycle represents 6 minutes of load and 4 minutes of no load in a 10 minute period.

DC STICK WELDING

The Ranger 250 can be used with a broad range of DC stick electrodes.

The MODE switch provides two stick welding settings as follows:

DOWNHILL PIPE WELDING

This slope controlled setting is intended for "out-of- position" and "down hill" pipe welding where the oper- ator would like to control the current level by changing the arc length. The output CONTROL dial adjusts the full output range for pipe welding. The ARC CON- TROL dial sets the short circuit current (arc-force) dur- ing stick welding to adjust for a soft or more forceful digging arc (crisp). Increasing the number from - 10(soft) to +10(crisp) increases the short circuit cur- rent which results in a more forceful digging arc. Typically a forceful digging arc is preferred for root and hot passes. A softer arc is preferred for fill and cap passes where weld puddle control and deposition (“stacking” of iron) are key to fast travel speeds. This can also increase spatter. It is recommended that the ARC CONTROL be set to the minimum number with- out electrode sticking. Start with the dial set at 0.

	TYPICAL RANGER 250 FUEL CONSUMPTION
	Kohler CH20	Onan P220,Robin-Subaru	Running Time for
	20HP @ 3600 RPM	20.5HP @ 3600 RPM	12 gallons-hours
	Gal./Hr (Liters/Hr)	Gal./Hr (Liters/Hr)	CH20/P220 OHV
			Robin-Subaru
Low Idle - No Load
2400 R.P.M.	0.6 (2.3)	0.5 (1.9)	20/24
High Idle - No Load
3700 R.P.M.	0.8 (3.0)	0.8 (3.0)	15/15
DC Weld Output
250 Amps @ 28 Volts	1.40 (5.3)	1.6 (5.9)	8.6/7.5
Auxiliary Power
8,500 Watts	1.47 (5.6)	1.7 (6.4)	8.2/7.0

RANGER 250