
Windsor-Severence Fire Protection District
Heavy Rescue
Production Specification
SVI #774 Page 117 of 126 April 19, 2010
GENERATOR MOUNTING
The generator shall be mounted between the chassis frame rails. The generator mounting brackets shall be fabricated
using heavy duty steel tubing, or structural channel. The generator mounting shall be bolted and removable so that the
generator can be lowered from under apparatus for service, if necessary. The generator case shall not extend below the
bottom edge of the apparatus body.
MANUALS AND SCHEMATICS
Two (2) complete manuals on parts list, maintenance, wiring schematics, hydraulic schematics, circuit boards, voltage
regulator board and other components shall be provided on delivery.
POWER-TAKE-OFF GENERATOR DRIVE
There shall be a "Hot Shift" power-take-off (PTO) installed on the transmission PTO by the cab chassis manufacturer. The
"Hot Shift" PTO is provided to allow the engagement of the PTO at higher engine RPM speeds. The PTO output shall be
connected to the generator through hollow tube type driveline with heavy duty universals.
The engagement of the PTO shall be in the chassis cab with a rocker switch and red pilot light to note engagement of the
PTO.
The power supply to the PTO engagement control shall be wired to the parking brake and a neutral position transmission
switch to prevent engagement unless the vehicle is stopped and transmission has been placed in neutral.
ENGINE SPEED CONTROL
An engine speed auxiliary control device (high idle switch or throttle) shall be installed to maintain a stable cycle output
from generator when the apparatus is parked.
An interlock shall prevent the operation of the engine speed auxiliary control device unless the parking brake is engaged
and the transmission is in neutral or park, or the parking brake is engaged and the engine is disengaged from the drive
wheels.
The engine shall be prevented from regulating its own engine speed during times when engine rpm control is critical for
consistent apparatus functions such as generator, water pump, or aerial operation.
GENERATOR MONITORING PANEL
To properly monitor the generator performance and load demand during operation, the generator installation shall be
equipped with a full instrument monitor panel.
This unit shall be manufactured by FRC model FROG-D and mounted next to the circuit breaker panel. This generator
output display shall consolidate five (5) generator monitoring instruments into one device. The display case shall be
waterproof and have dimensions not to exceed 4 1/4" high by 4 1/4" wide by 3 1/4" deep.
The following continuous displays shall be provided with super bright LED digits more than 1/2" high:
1. Generator frequency in hertz
2. Line 1 current in amperes
3. Line 2 current in amperes
4. Generator voltage in volts
The program shall support the accumulation of elapsed generator hours. Generator hours shall be displayed at the push
of a button.
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