Lincoln Electric SA-250 manual Operation, Safety Precautions, General Description, Control Panel

B-1 OPERATION B-1

SAFETY PRECAUTIONS

WARNING

Do not attempt to use this equipment until you have thoroughly read the engine manufacturer’s manual supplied with your welder. It includes important safety precautions, detailed engine starting, operating and maintenance instructions, and parts lists.

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ELECTRIC SHOCK can kill.

• Do not touch electrically live parts or electrode with skin or wet clothing.

•Insulate yourself from work and ground

•Always wear dry insulating gloves.

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ENGINE EXHAUST can kill.

• Use in open, well ventilated areas or vent exhaust outside.

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MOVING PARTS can injure.

• Do not operate with doors open or guards off.

• Stop engine before servicing.

•Keep away from moving parts.

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See additional warning information at the front of this operator’s manual.

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GENERAL DESCRIPTION

The SA-250 is a heavy duty, engine driven, DC arc welding power source, capable of providing constant current output for stick welding or DC TIG welding.

This welder is wound with all copper coils, rated at 300 amps/32 Volts. With the addition of the optional Wire Feed Module, the SA - 250 will provide constant voltage output for running the LN-7, LN-23P, or LN-25 wire feeders.

The optional Remote Control Kit provides a remote control rheostat for remote fine current and open cir- cuit voltage adjustment.

The SA-250 has Diesel Engine Protection. In the event of sudden low oil pressure or high coolant tem- perature, the engine immediately shuts down.

The SA-250 has a current range of 40-350 DC amps with output ratings as follows:

RATED OUTPUT			DUTY CYCLE
250A	@	30V	100%
300A	@	32V	60%

These units are also capable of providing 3 kVA of 115/230 volts of 60 cycle AC auxiliary power.

The SA-250 uses the Perkins 104-22 industrial water- cooled diesel engine.

CONTROL PANEL

Both the engine and the welder controls are located on one recessed panel at the exciter end of the machine. The welder controls consist of a five step “Current Range Selector” switch and a “Fine Current Adjustment” rheostat. The welder is equipped with a “Start” button, an “Ignition” switch, an “Idler” control switch, and a “Glow Plug” button for easier cold weather starting.

The control panel also contains an engine tempera- ture gauge, a battery charging ammeter, an oil pres- sure gauge, two three prong grounding type recepta- cles and four circuit breakers for auxiliary power.

ENGINE IDLER - The SA-250 is equipped with an electronic automatic engine idler. It automatically increases and decreases engine speed when start- ing and stopping welding or using auxiliary power. A built-in time delay permits changing elec- trodes before the engine slows to its low idle speed. The “Idler” control switch on the panel locks the idler in high idle position when desired.

AUXILIARY POWER- 3.0 kVA of nominal 115/230V, 60Hz, AC. Output voltage is maintained within ± 10% at all loads up to rated capacity. (See Optional Features for Power Plug Kit.)

SA-250