Lincoln Electric IM581 manual Engine Operation, Typical Fuel Consumption, Starting Instructions

B-5 OPERATION B-5

ENGINE OPERATION

CAUTION

Do not adjust the high idle engine speed (rpm) above the factory setting specification as this will overspeed the air compressor and void it’s warranty.

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STARTING INSTRUCTIONS

Be sure all Pre-Operation Maintenance has been per- formed. (See INSTALLATION section of this manual). Set the air compressor “ON/OFF” switch in the “OFF” position. To start the engine, set the speed control lever in the “RUN” position. Place ignition toggle switch in the “ON” position. Push in the engine protection sys- tem reset button. Engage the starter button. When the engine starts running, observe the engine oil pressure. If no pressure shows within 30 seconds, stop the engine and consult the engine operating manual. To stop the engine, place the ignition toggle switch in the “OFF” position.

When an engine is started for the first time, some of the oil will be needed to fill the passages of the lubricating system. Therefore, on initial starting, run the engine for about five minutes and then stop the engine and recheck the oil. If the level is down, fill to the full mark again. The engine controls were properly set at the fac- tory and should require no adjusting when received.

For added safety always operate the welder with the doors closed. Further, leaving the doors open changes the designed air flow and may cause engine, generator or compressor overheating.

Cold Weather Starting

WARNING

Never use any other starting aids, such as ether, when using the “Thermostart” system.

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When overnight temperatures are between 10°F (- 12°C) and freezing, use the standard “Thermostart” starting system installed on all engines. Follow the instructions on the start panel nameplate and in the engine manual shipped with the welder. With fully charged batteries and the proper weight oil, the “Thermostart” system operates satisfactorily even down to about 0°F (-18°C).

If the engine must be frequently started below 10°F (-12°C), it may be desirable to remove the “Thermostart” and install the optional ether starter kit. Installation and operating instructions are included in the kit. Use ether starting only when required because excessive use shortens engine life.

BREAK-IN PERIOD

ENGINE

The engine used to supply power for your welder is a heavy duty, industrial engine. It is designed and built for rugged use. It is very normal for any engine to use small quantities of oil until the break-in is accom- plished. Check the oil level twice a day during the break-in period (about 100 running hours).

IMPORTANT: IN ORDER TO ACCOMPLISH THIS BREAK-IN, THE UNIT SHOULD BE SUBJECTED TO HEAVY LOADS, WITHIN THE RATING OF THE MACHINE. AVOID LONG IDLE RUNNING PERIODS.

AIR COMPRESSOR

Cylinder head stud torque must be checked after initial 8 to 10 hours of operation. See compressor operator’s manual for details. Compressor mounting bolts should be checked for tightness after initial 8 to 10 hours of operation.

TYPICAL FUEL CONSUMPTION

The typical fuel consumption of the SAE400 WELD’N AIR for various operating scenarios is shown below:

Low Idle - No Load	.35 gal./ hr.
1100 RPM	(1.32 L./hr.)
High Idle - No Load	.75 gal./hr.
1800 RPM	(2.84 L./hr.)
Welding Load	1.92 gal./hr.
400 Amps, 40 Volts	(7.27 L./hr.)
Auxiliary Power	.96 gal./hr.
3000VA	(3.63 L./hr.)
Air Compressor	1.04 gal./hr.
	(3.94 L./hr.)
400 Amps, 40 Volts Load	2.22 gal./hr.
with Air Compressor “ON”	(8.40 L./hr.)
Auxiliary Power	1.20 gal./hr.
3000 VA with	(4.54 L./hr.)
Air Compressor “ON”

SAE400 WELD’N AIR