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OM-2031
5. Optional Equipment
Several items of optional equipment are available for the 6911 Series unit. Each piece of optional
equipment is covered by its own Instruction and Parts Manual and will not be covered in this basic
manual. When applicable, information for optional equipment will be located in Chapter 5.
Options are listed as follows:
A. Trailer
A four-wheel trailer with batteries and fuel tank is available.
B. Transformer-Rectifier
A transformer-rectifier (T-R) is available for use with the generator set. This T-R receives 115/200-
V, 400-Hz, AC power from the generator and converts it to a 28.5 V DC output.
C. Truck
Trucks with special bodies for mounting the generator set are available. Compartments in the
body are provided for batteries, cable-storage, etc. Trucks available are Ford, Chevrolet, and
GMC.
D. Second Output and Control Box
An auxiliary output and control box is available to provide a second independent 115-V AC output
circuit.
E. Quick Start Kit
(See Section 1-3, Para. 2C)
6. Canopy
A sheet metal enclosure, identified as a canopy (1, Fig. 1), provides protection for the engine, gener-
ator and electrical controls.
The canopy is designed to reduce the operational noise level in the immediate area of the machine.
Doors and panels are covered on the inside with Fiberglass acoustic material to reduce reflected and
conducted noise, and to absorb noise. Noise producing vibration in most frequently used doors on the
left side is reduced by the use of two-point slam locks. Less frequently used doors on the right side
are equipped with screw-operated latch fasteners which are tightened after latching to reduce vibra-
tion. Insulating strips around all doors also reduce noise. Metal strips are mounted horizontally across
the front grille to deflect engine fan exhaust air and noise upward.
Two large openings in the canopy top provide an entrance for cooling air and an access to internal
components. A hood-type cover is mounted about two inches above each opening. The cover is
flanged downward and extends beyond the edges of the upwardly flanged opening to prevent en-
trance of blowing rain while still allowing a good flow of air. Air enters the forward opening into the en-
gine compartment and is discharged through the radiator by the engine fan. Air enters the rear
opening into the generator compartment. It is then 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.
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Page 6
April 30/96 Revised
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