Lincoln Electric IM919 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.

FOR SUBARU ROBIN ENGINES

If engine is already warm starting should be done with one half or no choke applied.

STOPPING THE ENGINE

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

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:

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 elec- trodes, 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 prevents sticking of the elec- trode to the plate while welding. This can also increase spat- ter. It is recommended that the ARC CONTROL be set to the minimum number without electrode sticking. Start with the dial set at 0.

DOWNHILL PIPE WELDING

This slope controlled setting is intended for "out-of-position" and "down hill" pipe welding where the operator would like to control the current level by changing the arc length. The out- put CONTROL dial adjusts the full output range for pipe welding. The ARC CONTROL dial sets the short circuit cur- rent (arc-force) during 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 current 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 rec- ommended that the ARC CONTROL be set to the minimum number without electrode sticking. Start with the dial set at 0.

TYPICAL RANGER® 250 FUEL CONSUMPTION

	Kohler CH23S	Subaru Robin EH65	CH23/EH65 HOURS
	23HP @ 3600 RPM	22HP @ 3600 RPM	Approx. Run Time for
	Gal./Hr (Liters/Hr)	Gal./Hr (Liters/Hr)	12 Gallon Tank (Hours)
Low Idle - No Load	0.6 (2.3)	0.5 (1.9)	20	/ 24
2400 R.P.M.
High Idle - No Load	0.8 (3.0)	0.8 (3.0)	15	/ 15
3700 R.P.M.
DC Weld Output	1.40 (5.3)	1.6 (5.9)	8.6	/ 7.5
250 Amps @ 28 Volts
Auxiliary Power	1.64 (6.2)	1.9 (7.2)	7.3	/ 6.3
9,500 Watts Continuous

RANGER® 250