Lincoln Electric IM694 RED-D-ARC D503K 5+3 HO - Manual (Page 12)

B-1 B-1
D503K 5+3 HO
SAFETY PRECUATIONS
GENERAL DESCRIPTION
The D503K 5+3 HO 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 400 amps / 40 Volts.
The D503K 5+3 HO has Diesel Engine Protection. In
the event of sudden low oil pressure or high coolant
temperature, the engine immediately shuts down. The
D503K 5+3 HO has a current range of 40-600 DC
amps.
This unit is also capable of providing 3 KVA of 120
volts of 60 hertz AC auxiliary power.
DESIGN FEATURES
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 an electrode
polarity switch,”Current Control”, and “Job Selector”.
The engine controls consist of a “Start” and “Glow
Plug” switch (for cold weather starts) and a “Stop” pull
knob. Also located on this panel are the engine hour
meter, charging meter, and the engine temperature
gauge.
All Copper Windings - For long life and dependable
operation.
Auxiliary Power - 3.0 KVA of nominal 120V, 60Hz,
AC. Output voltage is maintained within ± 10% at all
loads up to rated capacity.
Welder Enclosure - The complete welder is rubber
mounted on a rugged steel “Box” channel base.
The output terminals are placed at the side of the
machines so that they are protected by the door.
Cranking System - A 12 volt electric starter is stan-
dard.
Air Cleaner - Heavy duty two stage dry type.
Muffler - A muffler and exhaust outlet elbow are stan-
dard.
Engine Hour Meter - A meter to record hours of oper-
ation.
Engine Protection - The system shuts the engine
down in the event of sudden low oil pressure or high
coolant temperature.
Fuel Consumption - Fuel consumption has been
optimized by means of careful design of the combus-
tion chamber, fuel feed and injection system and
cross-flow cylinder heads. In order to enhance
longevity of the engine, the engine turns at a constant
1800 RPM and no engine idler is used.
As a result, there is no waiting time for the welder to
achieve operating speed when striking an arc.
Fuel consumption figures at average operating loads
are as follows:
Tank Capacity: 15 gallons, (57 L)
1.8(gl/hr.)@ 400A @ 40V
1.0(gl/hr.)@ 250A @ 30V
.7(gl/hr.)@ No Load
400A @ 40V 100%
RATED OUTPUT DUTY CYCLE
OPERATION
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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WARNING