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A-2
INSTALLATION
CLASSIC 300D
A-2
GENERAL DESCRIPTION
The Classic
®
300 D 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 300 D 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 K1643-2). The
optional K924-4 or K924-5 Remote Control Kit (Both
field installed) See Section C for description.
The Classic 300 D has Diesel Engine Protection. In
the event of sudden low oil pressure or high coolant
temperature, the engine immediately shuts down.
The Classic 300 D 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 300 D uses the Perkins 104-22 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
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.
All Copper Windings - For long life and dependable
operation.
Engine Idler - The Classic 300 D is equipped with an
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 - 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.)
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.
250A @ 30V
300A @ 32V
100%
60%
RATED OUTPUT DUTY CYCLE