Lincoln Electric IM996 CLASSIC 300 D KUBOTA - Manual (Page 9)

A-2 INSTALLATION
CLASSIC® 300D KUBOTA
A-2
GENERAL DESCRIPTION
The CLASSIC® 300D KUBOTA 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 addition of the optional K623-1
Wire Feed Module™, the CLASSIC® 300D KUBOTA will pro-
vide constant voltage output for running the LN-7, LN-23P, or
LN-25 wire feeders. (The Wire Feed Module is factory installed
on the K1643-10). The optional K924-4 Remote Control Kit, pro-
vides a remote control rheostat for remote fine current and open
circuit voltage adjustment. See Section C for description.
The CLASSIC® 300D KUBOTA 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 KUBOTA 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 KUBOTA uses the Kubota V2403M
industrial 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 recep-
tacle 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 is equipped with an elec-
tronic 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 chang-
ing 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 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 mounted 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 temperature. 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. Refer to Troubleshooting section for all warning light fault
codes.
High Idle RPM (OCV) Adjustment - A Potentiometer is mount-
ed on the Control Panel that allows the operator to adjust the
high idle engine speed between 1650 and 1800 RPMʼS. This is
to allow further adjustment of the OCV. Total OCV adjustment
range is about 15 volts.
Oil Drain Valve - A ball valve, hose and clamp are standard.
Remote Control - The Remote/Local switch and Receptacle
are standard.
250A @ 30V
300A @ 32V 100%
60%
RATED OUTPUT DUTY CYCLE