Lincoln Electric IM931 manual Engine Controls

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B-3

OPERATION

B-3

 

 

 

4.WELD OUTPUT TERMINALS WITH FLANGE NUT:

Provides a connection point for the electrode and work cables. Output Stud covers porvided on code 11272 and above.

5. GROUND STUD:

Provides a connection point for connecting the machine case to earth ground for the safest grounding procedure.

6. 14-PIN CONNECTOR:

For attaching wire feeder control cables to the RANGER 250 LPG. Includes contactor closure circuit, auto-sensing remote control circuit, and 120V and 42V power. The remote control circuit operates the same as the 6-Pin connector.

7. 6-PIN CONNECTOR:

For attaching optional remote control equipment. When in the CC-STICK, PIPE, and CV-WIRE modes and when a remote control is connected to the Amphenol, the auto-sensing circuit in the RANGER 250 LPG automatically switches the OUTPUT control from control at the welder to remote control .

When using the TOUCH START TIG mode with a TIG Module connected to the RANGER 250 LPG, the OUTPUT control on the front of the RANGER 250 LPG is used to set the maximum current range of the CURRENT CONTROL on the TIG Module.

8. WELD TERMINALS CONTROL SWITCH:

In the WELD TERMINALS ON position, the output is electrically hot all the time. In the REMOTELY CON- TROLLED position, the output is controlled by a wire feeder or amptrol device, and is electrically off until a remote switch is depressed.

9. WIRE FEEDER VOLTMETER SWITCH:

Matches the polarity of the wire feeder voltmeter to the polarity of the electrode.

ENGINE CONTROLS:

10.RUN/STOP SWITCH - RUN position ener- gizes the engine prior to starting. STOP position stops the engine. The oil pressure interlock switch prevents battery drain if the switch is left in the RUN position and the engine is not operating.

11.CHOKE - When pulled out, it closes the choke valve on the engine carburetor for quick starting.

12. START PUSH BUTTON - Energizes the

starter motor to crank the engine.

13.IDLER SWITCH- Has two positions as follows:

1)In the HIGH position, the engine runs at the high idle speed controlled by the engine governor.

2)In the AUTO position, the idler operates as follows:

•When switched from HIGH to AUTO or after start- ing the engine, the engine will operate at full speed for approximately 12 seconds and then go to low idle speed.

•When the electrode touches the work or power is drawn for lights or tools (approximately 100 Watts minimum), the engine accelerates and operates at full speed.

•When welding ceases or the AC power load is turned off, a fixed time delay of approximately 12 seconds starts. If the welding or AC power load is not restarted before the end of the time delay, the idler reduces the engine speed to low idle speed.

•The engine will automatically return to high idle speed when there is welding load or AC power load reapplied.

14.ENGINE HOUR METER – Displays the total time that the engine has been running. This meter is useful for scheduling prescribed maintenance.

STARTING AND STOPPING THE

ENGINE

1.Remove all plugs connected to the AC power receptacles.

2.Set IDLER switch to AUTO.

3.Set the RUN/STOP switch to RUN.

4.Pull the choke to the full out position.

5.Press and hold the engine START button until the engine starts.

6.Release the engine START button when the engine starts.

7.Push the choke back in.

8.The engine will run at high idle speed for approxi- mately 12 seconds and then go to low idle speed. Allow the engine to warm up at low idle for several minutes before applying a load and/or switching to high idle. Allow a longer warm up time in cold weather.

RANGER 250 LPG

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Contents Ranger 250 LPG California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of Contents Section E Section DSection F SeriesTechnical Specifications Ranger 250 LPG K2336-2 InstallationMachine Specifications Ranger 250 LPG Engine K2336-2 Safety Precautions PRE-OPERATION Service FuelTighten by hand Remote Control Battery ConnectionOIL Engine Cooling SystemElectrical Connections Standby Power Connections Auxiliary Power ReceptaclesGND Connection of Ranger 250 LPG to PremisesConnection of LN-15 Wire Feeder to the Ranger 250 LPG Connection of Lincoln ELEC- Tric Wire FeedersConnection of LN-7 or LN-8 to the Ranger 250 LPG Across-The-Arc ModelConnection of Prince Spool Gun to the Ranger 250 LPG Connection of the LN-25 to the Ranger 250 LPGAdditional Safety Precautions Design FeaturesOperation General DescriptionWeld Mode Selector Switch Welding ControlsARC Control Engine Controls Stopping Welder OperationDuty Cycle Typical Ranger 250 LPG Fuel ConsumptionWire WELDING-CV TIG WeldingTypical Current Ranges 1 for Tungsten ELECTRODES2 Auxiliary Power ARC GougingRanger 250 LPG Extension Cord Length Recommendations Accessories T12153-9 50 AMP, 120/240V Power PlugRecommended Optional Equipment Maintenance Engine Maintenance ComponentsKohler Engine AIR PRE-CLEANER Service AIR Cleaner ServiceEngine OIL Change Engine OIL Refill CapacitiesSpark Plug Service AIR Filter Paper ElementSpark Plug Battery Maintenance Engine Adjustment Overspeed is HazardousCleaning the Battery Charging the BatteryGfci Receptacle Testing and RESET- Ting Procedure Welder / Generator MaintenanceHOW to USE Troubleshooting Guide TroubleshootingService Facility Persists,Contact your localLincoln Authorized Field Contact your local Lincoln Cause Course of ActionTroubleshooting Troubleshooting Diagrams Diagrams Diagrams Diagrams Diagrams Engine Welders /LN-8 Connection Diagram Diagrams Diagrams Diagrams Diagrams Diagrams Ranger 250 LPG Dimension PrintRanger 250 LPG Ranger 250 LPG Precaucion Warnung
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