Lincoln Electric IM931 manual Welder Operation, Stopping, Duty Cycle, Lbs./Hr Kg/hr

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B-4

OPERATION

B-4

 

 

 

CAUTION

Operating the starter motor for more than 5 sec- onds can damage the motor. If the engine fails to start, release the switch and wait 10 seconds before operation 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.

STOPPING

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: The engine will run for a breif moment (3 to 5 seconds) while the excess fuel is burned out of the system.

WELDER OPERATION

DUTY CYCLE

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 LPG 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 horizontal and vertical-up welding with all types of electrodes, especially low hydrogen. The out- put 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 pre- vents sticking of the electrode to the plate while weld- ing. This can also increase spatter. It is recommended that the ARC CONTROL be set to the minimum num- ber 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 oper- ator would like to control the current level by changing the arc length. The output CONTROL dial adjusts the full output range for pipe welding. The ARC CON- TROL dial sets the short circuit current (arc-force) dur- ing 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 cur- rent 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 recommended that the ARC CONTROL be set to the minimum number with- out electrode sticking. Start with the dial set at 0.

TYPICAL RANGER 250 LPG FUEL CONSUMPTION

 

 

Kohler CH20 S

 

 

20HP @ 3600 RPM

 

 

Lbs./Hr (Kg/hr)

 

 

 

 

 

Low Idle - No Load

 

 

 

2400 R.P.M.

3.42 (1.55)

 

 

 

 

 

 

High Idle - No Load

 

 

 

3700 R.P.M.

4.46 (2.02)

 

 

 

 

 

 

DC Weld Output

 

 

 

250 Amps @ 28 Volts

7.22 (3.27)

 

 

 

 

 

 

Auxiliary Power

 

 

 

8,000 Watts

7.23 (3.28)

 

 

 

 

 

RANGER 250 LPG

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Contents Ranger 250 LPG Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Section F Section DSection E SeriesInstallation Technical Specifications Ranger 250 LPG K2336-2Machine Specifications Ranger 250 LPG Engine K2336-2 Safety Precautions Fuel PRE-OPERATION ServiceTighten by hand OIL Battery ConnectionRemote Control Engine Cooling SystemElectrical Connections Auxiliary Power Receptacles Standby Power ConnectionsConnection of Ranger 250 LPG to Premises GNDConnection of LN-7 or LN-8 to the Ranger 250 LPG Connection of Lincoln ELEC- Tric Wire FeedersConnection of LN-15 Wire Feeder to the Ranger 250 LPG Across-The-Arc ModelConnection of the LN-25 to the Ranger 250 LPG Connection of Prince Spool Gun to the Ranger 250 LPGOperation Design FeaturesAdditional Safety Precautions General DescriptionWelding Controls Weld Mode Selector SwitchARC Control Engine Controls Duty Cycle Welder OperationStopping Typical Ranger 250 LPG Fuel ConsumptionTIG Welding Wire WELDING-CVTypical Current Ranges 1 for Tungsten ELECTRODES2 ARC Gouging Auxiliary PowerRanger 250 LPG Extension Cord Length Recommendations T12153-9 50 AMP, 120/240V Power Plug AccessoriesRecommended Optional Equipment Engine Maintenance Components MaintenanceKohler Engine Engine OIL Change AIR Cleaner ServiceAIR PRE-CLEANER Service Engine OIL Refill CapacitiesAIR Filter Paper Element Spark Plug ServiceSpark Plug Cleaning the Battery Engine Adjustment Overspeed is HazardousBattery Maintenance Charging the BatteryWelder / Generator Maintenance Gfci Receptacle Testing and RESET- Ting ProcedureTroubleshooting HOW to USE Troubleshooting GuidePersists,Contact your local Service FacilityLincoln Authorized Field Cause Course of Action Contact your local LincolnTroubleshooting Troubleshooting Diagrams Diagrams Diagrams Diagrams Diagrams Engine Welders /LN-8 Connection Diagram Diagrams Diagrams Diagrams Diagrams Diagrams Dimension Print Ranger 250 LPGRanger 250 LPG Ranger 250 LPG Precaucion Warnung
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