Lincoln Electric IM511-D manual Break-in Period, Welding Processes Stick Constant Current Welding

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.

Stop the engine by placing the “Engine” switch in the “OFF” position.

A fuel shut off valve is not required on the Ranger 8 because the fuel tank is mounted below the engine.

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 as follows:

Kohler	Onan
CH20S	P218
5 hr	25 hr

The oil filter is to be changed at the second oil change. Refer to the Engine Owner’s Manual for more informa- tion.

Welding Processes

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 output “CONTROL” or remote output control to max

(10)and the “RANGE” switch to the setting that is closest to the recommended current for the electrode being used and make a trial weld. A fine adjustment of the welding can be made by adjusting the output “CONTROL” or remote control. For the best arc stability, always use setting that results in the highest setting of the output or remote control and the lowest setting of the “RANGE” switch.

The Ranger 9 can be used with a broad range of AC and DC stick electrodes. See “Welding Tips 1” included with the Ranger 9 for electrodes within the rating of this unit and recommended welding currents of each. See the following table for welding current ranges:

CURRENT RANGES (AC and DC STICK WELDING

- 5 to 10 ON CONTROL DIAL)

	RANGE SETTING	ACTUAL
	ON MACHINE	CURRENT RANGE
45		25 to 45 AMPS
90		50 to 90 AMPS
120		60 to 120 AMPS
160		80 to 160 AMPS
	200	100 to 200 AMPS
250		140 to 250 AMPS

TIG (Constant Current) Welding

The Ranger 9 can be used in a wide variety of AC and DC Tungsten Inert Gas (TIG) welding applications for AC TIG welding up to 200 amps and DC TIG welding up to 250 amps.

The K930-1 TIG Module installed on a Ranger 9 provides high frequency and shielding gas control for AC and DC GTAW (TIG) welding processes. The TIG Module allows full range output control. Afterflow time is adjustable from 0 to 55 seconds.

When using the Ranger 9 for AC TIG welding of aluminum, the TIG Module is to be set for CONTINU- OUS HF. The following settings and electrodes are recommended:

Pure (EWP)	“Range”	Welding
Tungsten Diameter	Switch Settings	Current
1/8	90, 120	100 to 200 amps
3/32	45, 90	45 to 140 amps
1/16	45, 90	45 to 100 amps

When AC TIG welding, the actual maximum welding current is 40 to 80 amps higher than the current marked on the RANGE SWITCH dial. This is a result of a lower effective reactance due to the natural rectifi- cation that occurs with the AC TIG welding process.

Wire Feed (Constant Voltage) Welding

The Ranger 9 can be used with a broad range of flux- cored wire (Innershield and Outershield) electrodes and solid wires for MIG welding (gas metal arc welding).

Some recommended Innershield electrodes are: NR-211MP, NR-311, NR-203 series as well as, Lincore® 33 and 55 hardfacing electrodes. Diameters from .035 (0.9mm) up to and including 5/64” (2.0mm) can be used. 5/64” (2.0mm) NS-3M can be used in limited applications. Cable length and other condi- tions can affect the ultimate results of this application. Request Lincoln publication N-675 for additional infor- mation.

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