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INSTALLATION
A4.3 A4.3
CLASSIC® 300D & 300G
GENERAL DESCRIPTION
The Classic® 300D Perkins is a heavy duty, engine dri-
ven, DC arc welding power source, capable of provid-
ing 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
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 K924-5 Remote Control Kit, provides a remote
control 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 pres-
sure or high coolant temperature, the engine immedi-
ately 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
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 weath-
er starting.
The control panel also contains an engine temperature
gauge, a battery charging ammeter, an oil pressure
gauge, for auxiliary power one three prong grounding
type receptacles, one GFCI receptacle and circuit
breakers for protection.
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 auxil-
iary 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 Receptacle - One UL approved 115V ground
fault circuit interrupter duplex type receptacle is stan-
dard. See the MAINTENANCE section for detailed
information on testing and resetting the GFCI recepta-
cle.
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 stan-
dard.
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 oper-
ation.
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.
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
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