GENERAL 643P INFO FROM THE US FOREST SERVICE
The utility body described in this specification shall be mounted on Government furnished cab and chassis. Government furnished cab and chassis shall be picked up by the apparatus manufacturer at designated locations. The apparatus manufacturer shall be liable for all loss and damage to Government furnished cab and chassis until completion and final acceptance of work and returned to the Government.
The completed apparatus described in this specification shall be compliant with the requirements of NFPA 1906, latest edition, except where noted.
TILT TEST
The apparatus shall be tilted to 30° minimum before lifting a tire or tire set when tested at the estimated in-service weight in accordance with NFPA 1906.
CHASSIS ELECTRICAL ADDITIONAL EQUIPMENT AND MODIFICATIONS
The apparatus chassis shall be equipped with a heavy-duty 12 volt direct current (VDC) negative ground electrical system. The electrical system shall include all parts, components, switches, relays, wiring, and other devices required to assure complete, consistent and proper operation of the completed apparatus. Wiring shall be routed and/or protected to eliminate exposure to moving parts or debris.
All lights required are to comply with Federal Government Codes for vehicles of this size and design shall be provided and installed. These lights shall include headlamps and front turn signals with hazard switch, cab marker and clearance lights, back up lights, stop-turn-tail and license plate lights.
All switches for the warning lights and other electrical equipment shall be mounted on a separate switch panel located in the cab on a master electrical console mounted between the two front seats. The switches shall be functionally laid out, properly identified, and shall be located within easy reach of both the driver and the officer. The warning light system shall have a “master” switch, which shall allow for the pre-selection of all warning lights. All switches shall be of a heavy duty design.
The following additional electrical equipment shall be installed on, and modifications performed to, the specified cab and chassis by the apparatus builder:
MULTIPLEX SYSTEM
A Class 1 ES-Key, or equivalent, multiplexed solid state management system for controlling the electrical system devices shall be provided. The system shall be fully programmable, and capable of performing load management functions, system monitoring and reporting. All electrical circuits and wiring shall be rated at 125% of the maximum load being imposed.
BATTERY MASTER SWITCH
One (1) battery cutoff switch shall be provided in the cab. The switch shall be a Cole Hersee brand, Model #M-2484-16, with Model #82065 switch plate “Off/On” label, or equivalent. The switch shall be rated for 175 amps continuous duty and 800 amps intermittent duty. The switch shall be located on the floorboard to the left side of the driver’s seat and placed as far aft as possible to prevent accidental actuation.
BATTERY ON INDICATOR LIGHT
One (1) “Battery On” indicator light, with a green lens, shall be provided on the center console, located forward on the left side. This light shall illuminate when the battery switch is turned to the “ON” position.
JUNCTION BOX
An electrical junction box for all apparatus modules, connections, relays, circuit breakers, etc. shall be located on the aft wall of the cab behind the driver and passenger seats. All connection points shall be labeled according to function. The junction box shall be constructed from black powder coated stainless steel with a hinged door and a spring loaded push-button style latch.
BULKHEAD CONNECTIONS
All apparatus body wiring either entering or exiting the cab shall be in a harness configuration and pass through a centralized location as close to the interior electrical junction box as possible. The harness(s) shall terminate at the point of the cab entry/exit with Pacific Aerospace and Electronics (PA&E) hermetic bulkhead connector(s) or equivalent, designed to facilitate in the separation of the cab/chassis/apparatus body.
Model 643P Body Only Supercedes Sept. 2009 PERIMETER LIGHTING
The perimeter lighting shall be wired to a switch located in the cab center console. The perimeter lighting shall be activated when the vehicle is placed in “blocking mode” upon setting of the parking brake. Two (2) 4” clear LED lights shall be provided under the apparatus front bumper. Two (2) 4” clear LED lights shall be provided facing forward on bulkhead of body, one (1) on each side. Four (4) 4” clear LED lights shall be provided under the apparatus body, one (1) forward and one (1) aft of
the rear wheel wells, both sides of the body. The lights shall be housed within an enclosure sufficient to protect from damage Two (2) 4” clear LED lights shall be provided under the tail board protected from impact and debris.
BACK UP ALARM One (1) solid state back up alarm shall be provided at the rear of the apparatus protected from impact and debris. The back up alarm shall be wired to the reverse circuit of the transmission, and shall provide an audible alarm to the rear of the apparatus when reverse gear is selected. The alarm shall have a volume of 87 to 112 dBA while in operation.
MAP LIGHT One (1) flexible goose neck map light shall be provided on the officer’s side of the cab center console.
The switch for the map light shall be located on the light and shall include a diffuser to prevent glare at night. ANTENNA One (1) antenna base shall be supplied and mounted on the cab roof as specified. The antenna cable
shall be routed to the cab interior, terminating at location of radio mounting bracket. USFS INSTALLED RADIO PRE-WIRE The chassis cab interior shall be wired with battery power, battery ground, switched power, and radio
rebroadcast wires to the siren or PA, and labeled to simplify USFS radio installation. The radio shall occupy the second forward, angled, position in the cab center console.