Lincoln Electric IM604-B manual Break-in Period, Welding Process, Stopping the Engine

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After running at high engine speed for 10-14 seconds, the engine will go to low idle.

Allow the engine to warm up by letting it run at low idle for a few minutes.

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. NOTE: Backfiring may occur if engine is not allowed to cool at low idle before stop- ping.

Stop the engine by placing the “Engine” switch in the “OFF” position. Close the fuel valve on the LPG sup- ply cylinder.

Always de-pressurize the LPG supply hose at the end of each days use. Close the valve on the LPG supply cylinder while the engine is running at high idle. The engine will continue to run for about 30 sec- onds and then stop. After the engine stops, place the engine “ON - OFF” switch in the “OFF” position.

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 5 hours.

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

Welding Process

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 “RANGE” switch to a setting that is equal to or slightly greater than the desired welding current. (The “RANGE” dial marking indicates the maximum current for that range). Fine adjustment of the welding current

is made by adjusting the output “CONTROL” or remote control. For best arc stability, use settings 5 through 10.

The Ranger 8 can be used with a broad range of AC and DC stick electrodes. See “Welding Tips 1” included with the Ranger 8 for electrodes within the rating of this unit and recommended welding currents of each.

Welding Current Ranges are shown in the following tables:

AC CURRENT RANGES (STICK WELDING - 5 TO 10 ON CONTROL DIAL)

Range		Current
Setting		Range
50	30	- 50 Amps
70	40	- 70 Amps
90	50	- 90 Amps
125	70	- 125 Amps
175	90	- 175 Amps
MAX	120	- 225 Amps

DC CURRENT RANGES (STICK WELDING - 5 TO 10 ON CONTROL DIAL)

Range		Current
Setting		Range
50	30	- 50 Amps
70	40	- 70 Amps
90	50	- 90 Amps
125	70	- 125 Amps
175	90	- 175 Amps
MAX	120	- 210 Amps

TIG (Constant Current) Welding

The TIG Module (K930-1) installed on a Ranger 8 provides high frequency and shielding gas control for AC and DC GTAW (TIG) welding processes. The TIG Module allows full range out- put control . Afterflow time is adjustable from 0 to 55 seconds.

When using the Ranger 8 for AC TIG welding of aluminum, the TIG Module is to be set for CONTINUOUS HF. The following settings and electrodes are recommended.

SETTINGS FOR PURE TUNGSTEN

TUNGSTEN	RANGE SWITCH						APPROXIMATE
DIAMETER (in.)			SETTINGS				CURRENT RANGE
1/8	70,		90,	or 125		80		- 150 Amps
3/32	50,		70,	or	90	45		- 130 Amps
1/16			50,	or	70	40		- 80 Amps
SETTINGS FOR 1% THORIATED TUNGSTEN
TUNGSTEN	RANGE SWITCH						APPROXIMATE
DIAMETER (in.)			SETTINGS				CURRENT RANGE
1/8	70,	90, 125, or 175					80	- 225	Amps
3/32	50,	70,		90, or 125			50	- 180	Amps
1/16		50,		70, or	90		45	- 120	Amps

RANGER 8 LPG