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
IMPORTANT: IN ORDER TO ACCOMPLISH THIS
The engine manufacturer’s recommendation for the running time until the first oil change is as follows:
Kohler | Onan |
CH20S | P218 |
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5 hr | 25 hr |
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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)
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| RANGE SETTING | ACTUAL |
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| ON MACHINE | CURRENT RANGE |
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| 45 | 25 to 45 AMPS |
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| 90 | 50 to 90 AMPS |
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| 120 | 60 to 120 AMPS |
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| 160 | 80 to 160 AMPS |
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| 200 | 100 to 200 AMPS |
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| 250 | 140 to 250 AMPS |
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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
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 |
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1/8 | 90, 120 | 100 to 200 amps |
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3/32 | 45, 90 | 45 to 140 amps |
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1/16 | 45, 90 | 45 to 100 amps |
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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: