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.

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

IM919 specifications

The Lincoln Electric IM919 is a highly advanced multi-process welding machine that combines versatility and efficiency, making it a go-to choice for professional welders and fabrication shops. Known for its robust design and user-friendly interface, the IM919 is engineered to perform a wide range of welding processes, including MIG, TIG, and stick, enhancing its application for various projects.

One of the standout features of the IM919 is its intuitive control panel. Designed with a clear digital display, it allows welders to easily select and adjust settings for voltage, wire feed speed, and amperage with precision. This accessibility makes it suitable for both novice and experienced users, providing a seamless experience in the welding process.

Technologically, the IM919 incorporates Lincoln Electric’s advanced welding technologies. The machine employs an inverter-based power supply, which offers a lightweight design and improved energy efficiency. This inverter technology significantly enhances arc stability, ensuring consistent weld quality across various materials, including steel, aluminum, and stainless steel. With a maximum output of around 300 amps, the IM919 is capable of handling heavier gauge materials while maintaining a compact form factor.

Additionally, the IM919 features a synergic control mode, which automatically adjusts parameters based on the selected wire type and diameter. This function aids in optimizing the welding process and minimizes trial and error, allowing for faster, more reliable results. Moreover, the machine is equipped with a powerful cooling system that prevents overheating during extended operation, thus extending its overall lifespan.

Durability and safety are paramount in the design of the IM919, as it comes with an IP23S rating, which means it is protected against water and dust ingress, making it suitable for various working environments. Enhanced safety features, such as overload protection and thermal cut-off, ensure that the welder remains operationally safe even under demanding conditions.

In summary, the Lincoln Electric IM919 is a state-of-the-art welding machine that excels in versatility, user-friendliness, and durability. With its advanced technologies and features, it stands out as an essential tool for professionals seeking quality and reliability in welding applications. Whether in a busy workshop or on a job site, the IM919 delivers outstanding performance, making it a valuable investment for anyone in the welding trade.