Lincoln Electric IM995 CLASSIC 300 D PERKINS - Manual (Page 9)

A-2 INSTALLATION
CLASSIC ® 300D PERKINS
A-2
GENERAL DESCRIPTION
The Classic ® 300D Perkins 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, and provides other Classic
® features such as
improved door latches and stainless hinges. With the addi-
tion of the optional K623-1 Wire Feed Module™, the
Classic
® 300D Perkins will provide constant voltage output
for running the LN-7, LN-23P, or LN-25 wire feeders. (The
Wire Feed Module is factory installed on the K1643-8). The
optional K924-4 Remote Control Kit, provides a remote con-
trol rheostat for remote fine current and open circuit voltage
adjustment. See Section C for description.
The Classic ® 300D Perkins has an Electronic Engine
Protection System. In the event of sudden low oil pressure
or high coolant temperature, the engine immediately shuts
down. The Classic
® 300D Perkins has a current range of
40-350 DC amps with output ratings as follows:
These units are also capable of providing 3 KVA of 115/230
volts of 60 cycle AC auxiliary power.
The Classic ® 300D Perkins uses the Perkins 404D-22 indus-
trial water-cooled diesel engine.
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 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 temperature
gauge, a battery charging ammeter, an oil pressure gauge,
for auxiliary power consists of one 20 amp, 120VAC (5-20R)
duplex receptacle with GFCI protection and one 15 amp,
250VAC (6-15R) receptacle, protected by 2 pole, 15 Amp
breaker.
All Copper Windings - For long life and dependable
operation.
Engine Idler - The Classic ® 300D Perkins is equipped with
an electronic automatic engine idler. It automatically
increases and decreases engine speed when starting and
stopping welding or using auxiliary power.
A built-in time delay permits changing electrodes 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 Section C for Power
Plug Kit.)
GFCI - Protects the 20 amp, 120V duplex receptacle. See
the Maintenance Section for detailed information on testing
and resetting of the GFCI.
120 V DUPLEX RECEPTACLE AND GFCI
A GFCI protects the 120V auxiliary power
receptacle.
A GFCI (Ground Fault Circuit Interrupter) is a device to protect
against electric shock should a piece of defective equipment
connected to it develop a ground fault. If this situation should
occur, the GFCI will trip, removing voltage from the output of
the receptacle. If a GFCI is tripped see the MAINTENANCE
section for detailed information on testing and resetting it. A
GFCI should be properly tested at least once every month.
The 120 V auxiliary power receptacle should only be used with
three wire grounded type plugs or approved double insulated
tools with two wire plugs. The current rating of any plug used
with the system must be at least equal to the current capacity of
the associated receptacle.
Welder Enclosure - The complete welder is rubber mount-
ed on a rugged steel “C” channel base.
The output terminals are placed at the side of the machines
so that they are protected by the door. The output terminals
are labeled (+) and (-).
Cranking System - A 12 volt electric starter is standard.
Air Cleaner - Heavy duty two stage dry type.
Muffler - A muffler and stainless steel exhaust outlet elbow
are standard.
Engine Hour Meter - A meter to record hours of operation.
Engine Protection - The system shuts the engine down in
the event of sudden low oil pressure or high coolant temper-
ature. A warning light on the control panel will indicate such
a fault. To reset the engine for restarting, turn the ignition
switch off then on.
Oil Drain Valve - A ball valve, hose and clamp are stan-
dard.
Remote Control - The Remote / Local Switch and
Receptacle are standard.
250A @ 30V
300A @ 32V 100%
60%
RATED OUTPUT DUTY CYCLE