Hobart 6824-1, Operation And Maintenance Manual, Page: 16 / 214

The set is secured in mounted position by two retaining brackets attached at the front of the unit
(See 2-1, Fig. 2). The removal of two screws from the brackets allows the set to be rolled out
approximately 38 inches, where a stop-bar on the main frame contacts a stop-block in the left track
to prevent further outward travel.
b. Protective Monitor
A single, solid-state device (4, Fig. 8) receives signals from all of the fault sensing units in the
generator output circuit and functions to cause the load to be disconnected from the generator if an
abnormal condition of voltage, frequency, or load develops.
c. Pull-out Trays
The control box is equipped with pull-out, drawer-type trays (Fig. 6) which provide easy access to
controls and equipment mounted in them. Each tray may be removed as an assembly by
disconnecting a single quick-disconnect connector and tripping two safety latches.
d. Voltage Regulator
A solid-state, adjustable voltage regulator (Fig. 10) provides automatic voltage regulation at the
aircraft (or distribution panel when applicable). The regulator is also adjustable for a variety of
output cable sizes and lengths.
e. Test Circuitry
A receptacle connector (19, Fig. 9) with wiring to various test points throughout the electrical
circuitry is provided for the attachment of a test box manufactured by Hobart Brothers. This test
circuitry allows electricians to perform as many as twenty-four tests and checks from one location,
conveniently and easily.
f. Electric Governor
The engine is equipped with an all electric type governor kit (5 and 12, Fig. 3) and other special
equipment more fully described under the engine description.
4. Identification
Generator sets are identified by their Specification number, which consists of a Series number plus a
dash number
(i.e. -1, -2, etc.) suffix. The suffix number indicates the mounting design of the generator
set. For example, Specification number 6824A-2 identifies a machine designed for mounting on a tow
tractor.
The following identification chart identifies in greater detail the machines covered by this manual.
SPECIFICATION No. CHARACTERISTICS
6824-1, 6824A-1, and
6824A-5 Designed for trailer or truck mounting. 12-V DC electrical power and
fuel to be supplied from facilities on trailer or truck.
6824-2, 6824A-2, and
6824A-6 Designed for mounting on a tow tractor. 12-V DC electrical power
and fuel to be supplied by tow tractor. Furnished with roll-out tracks
for mounting on tow tractor.
6824-3, 6824A-3, and
6824A-7 Designed for stationary mounting. Equipped with two 12-V batteries
and fuel tank.
6824-4, 6824A-4, and
6824A-8 Dual output unit for trailer or truck mounting. 12-V DC electrical
power and fuel to be supplied from facilities on trailer or truck.
Generator Set Identification Chart
OM-499
1-1 May 31/94 Revised
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