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A-2
INSTALLATION
CLASSIC III AND IIID
A-2
GENERAL DESCRIPTION
The Classic
®
III and Classic
®
III D are heavy duty,
engine driven, DC arc welding power sources capable
of providing constant current output for stick welding
or DC TIG welding. These welders are wound with all
copper coils, rated at 300 amps/32 Volts, and provide
other Classic features such as improved door latches
and stainless hinges. With the addition of the optional
K623-1 Wire Feed Module
™
, the Classic III or Classic
III 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 K1428-3 and
K1433-2).
The Classic III D has Diesel Engine Protection. In the
event of sudden low oil pressure or high coolant tem-
perature, the engine immediately shuts down. The
Classic III & Classic III D have 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 III unit uses the Continental TM27
®
industrial water-cooled Gasoline engine, while the
Classic III D uses the Continental TMD27
®
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. Each welder is equipped with a
“Start” button, an “Ignition” switch and an “Idler” con-
trol switch. The diesel version comes with a “Glow
Plug” feature for easier cold weather starting.
The control panels also contain an engine tempera-
ture gauge (diesel only), a battery charging ammeter,
an oil pressure gauge (oil pressure light on the gaso-
line version), two three prong grounding type recepta-
cles and circuit breakers for auxiliary power, and a
choke control (gasoline version only).
All Copper Windings - For long life and dependable
operation.
Engine Idler - Both the Classic III & III D are
equipped with an electronic automatic engine idler. It
automatically increases and decreases engine speed
when starting and stopping welding or using aux-
iliary 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 full speed 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 Kits.)
Welder Enclosure - The complete welders are 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 rain cap are standard.
Engine Hour Meter - A meter to record hours of oper-
ation.
Diesel Engine Protection - The system shuts the
diesel engine down in the event of sudden low oil
pressure or high coolant temperature.
Carburetor Deicing Kit
Classic III Welders are equipped with a kit, that
prevents carburetor icing when outside temperature is
60°F/15.5°C or lower.
225A @ 29V
300A @ 32V
350A @ 34V
100%
50%
30%
RATED OUTPUT DUTY CYCLE