Specifications

Proposal Number PSDF #P09-0004
Aerial Speed
The speeds of all aerial functions are proportionally regulated by the elevation and extension of the aerial.
The aerial shall have proportional slow down on full extension and full retraction. The elevation system shall
proportionally reduce the speed at sixty (60) degrees and ramp to off at full elevation. Lowering shall
proportionally reduce the speed at three (3) degrees and ramp to off at minus ten (-10) degrees. When the
aerial is fully retracted the aerial speed shall be 20 percent faster then when fully extended.
The turntable control console shall have a toggle switch to energize the hydraulic system for the aerial
functions. The switch shall have three (3) functions, "high speed", "low speed", and "off". All ladder
controls operate at high (full speed) or low (reduced speed). Each aerial "Soft Touch" control handle shall
lock in the neutral position. With the ladder control handle activated the RPM's shall increase to 1,250 RPM
and maintain there for two (2) seconds after returning to the neutral position. An emergency stop button
shall be used for emergency stopping and shall return the system to the "off" position, allowing the engine
speed to return to normal idle speed and the hydraulic system to de-energized.
Cab and Body Collision Protection
Programmable cab and body collision protection will have three (3) amber lights to indicate Right Rotation
Disabled, Down Disabled and Left Rotation Disabled. The lights shall illuminate when aerial functions (right
rotation, left rotation or lowering) are disabled. All three lights shall illuminate when the E-STOP is pushed
or the outrigger interlock is active.
Auto Bedding
The aerial shall have a momentary switch for auto bedding. Activation of the momentary switch when the
aerial is within 20 degrees left or right of the ladder bed, below 20 degrees elevation and 75 percent retracted
will automatically bed the aerial.
Rung Alignment
The aerial rung alignment light shall be monitored by an absolute encoder system. The indicator light shall
illuminate when the rungs are aligned for the safety of climbing the aerial.
Soft Touch Controls
All aerial controls left/right, extend/retract and raise/lower shall be Soft Touch controllers. The Soft Touch
controls shall have built in ramp up and ramp down capabilities. The turntable controls shall override the
platform controls at all times.
Short Jacked Outriggers
Programmable logic control system allows the aerial to rotate over the short jacked outriggers, when the
aerial is within the safe operating parameters of the programmable logic control program. A red warning
light at the outrigger and aerial operator's control consoles shall warn the operator that one (1) or more
outriggers have been "short set". In the event the vehicle has been set up with one (1) or more of the
outriggers "short set", any rotation of the turntable to an unsafe short set outrigger shall automatically ramp
the rotation of the turntable to a feather-soft stop and allow the operator to return to safe operating
parameters.
Aerial Load Gauge
An aerial load gauge shall give a continuous reading of the load on the device. This gauge shall have a green
light showing the load on the ladder, an amber light will tell the operator when the aerial is nearing the rated
load and a red light will flash at the point where rated load capacity is reached. Additionally, there shall be a
pulsating warning horn that shall sound if the ladder is overloaded by 0 - 10% of its rated capacity. The horn
shall emit a constant sound when rated capacity is exceeded by more than 10%. If the ladder is over loaded
the extension and lowering ability of the aerial shall be disabled until the weight can be removed or shifted.
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