Canopy; Optional Equipment; Engine, Generator, And Controls Assembly; Basic Engine - Hobart 60PL20 Operation And Maintenance Manual

OM-2053

4. Canopy

A sheet metal enclosure, identified as a canopy (2, Fig. 1) , provides protection for the engine, generator
and electrical controls. This generator set is equipped with a canopy having doors on both sides. This
canopy is largely of one-piece construction, with the four access doors of the unit attached to the canopy
top by welded-on piano hinges. Hex-head bolts attach the front and back panels to the canopy top assem-
bly and the frame. Air enters the bottom of the unit into the engine compartment and is discharged
through the radiator by the engine fan. Metal strips are mounted horizontally across the front grille to de-
flect engine fan exhaust air and noise downward. Air entering the generator compartment is circulated
over generator controls and drawn into the rear exciter and generator housings where it passes over all
windings before being discharged by the generator fan.
Panel mounted instruments may be observed through two Plexiglas windows in the left rear door which
covers the control box and engine control panel. The lower window is slanted outward at the bottom to
provide access to engine controls when the door is closed.
Doors on the unit are equipped with flexible rubber draw latches (9, Fig. 1) which prevent excessive door
vibration when the unit is running.

5. Optional Equipment

Two items of optional equipment are presently available for the 7009 & 7009A units: a cold-weather start-
ing aid kit identified as Hobart Part No. 488913 , and a four-wheel trailer with fuel tank, identified as Ho-
bart Part No. 280718 (7009) or Hobart Part No. 281056 (7009A). Refer to TO-186 in Chapter 5 for
information on the four-wheel trailer.

6. Engine, Generator, and Controls Assembly

This assembly is the basic generator set without canopy. It includes all components required to generate
and regulate 400 Hz, 115/200 V, threephase power, and is operable when provided with fuel and 12 V DC
power. The engine-generator assembly is mounted on a welded steel frame. A superstructure, attached to
the main frame, provides mounting facilities for the canopy, control box, and electrical equipment and con-
trols.
A. Basic Engine
This generator set is equipped with a 6-cylinder, in-line, turbocharged Perkins Diesel engine. See Fig-
ure 2 for general specifications, and see Engine Operator's Handbook in Chapter 6 for more detailed
information.
B. Engine Manufacturer's Equipment
As received from the engine manufacturer, the engine includes the following equipment which is de-
scribed in the Perkins Diesel shop Manual (Chap. 6)
(1) Fuel filter.
(2) Reverse-flow, engine cooling fan to blow air OUTWARD through the radiator.
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December 31/91 Revised