Operation; Safety Precautions; General Description - Lincoln Electric SA-250 Operator's Manual

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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.
------------------------------------------------------------------------
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.
------------------------------------------------------------------------
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or
vent exhaust outside.
------------------------------------------------------------------------
MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
• Stop engine before servicing.
• Keep away from moving parts.
------------------------------------------------------------------------
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.

OPERATION

The SA-250 has a current range of 40-350 DC amps
with output ratings as follows:
RATED OUTPUT
250A @ 30V
300A @ 32V
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
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
115/230V, 60Hz, AC. Output voltage is maintained
within ± 10% at all loads up to rated capacity.
Optional Features for Power Plug Kit.)
SA-250
DUTY CYCLE
100%
60%
- The SA-250 is equipped with an
- 3.0 kVA of nominal
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(See