March 2008
"2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications
Page 2-10
ART_2477
Overload
Switch
Pothole
Switches
Motion Light
Limit Switch
Height Switch
Limit Switch
There is a limit switch to prevent driving in high speed.
When the platform is raised above approximately 7 feet
(2.3 meters), the machine will be in the slow speed
mode.
Pothole Switch
When the platform is elevated above 7 feet
(2.3 meters), the pothole switch activators raise, acti-
vating the two (2) pothole switches and causing the
pothole bars to extend.
When the platform is lowered, the pothole switch
activators lower, depressing the two (2) switches and
causing the pothole bars to retract.
Height / Angle Switch
The height sensor calculates the height of the platform
by measuring the angle of the bottom scissor beam.
The data is used by the load sensing system to ensure
safe machine operation.
Overload / Pressure Switch
The overload switch measures the pressure at the lift
cylinder to calculate platform load. The data is used by
the load sensing system to prevent operation when the
platform is overloaded.
Tilt Alarm
An alarm provided on the platform control box will sound at 10 Hz when the machine is on an
unsafe slope, and elevated above the the limit switch. If the alarm sounds, use extreme caution
and lower the platform. Reposition the machine on a firm level surface before elevating again.
Tilt Alarm Test
The slope rating is shown on the machine Serial Plate or in the
Specifications section of this
manual. Identify a suitable location where the slope is outside the specified range using an incli-
nometer. Lower the platform fully before driving onto this slope. Exit the platform and switch
selector to Base Controls. Elevate the platform to approximately 2.5 m. An alarm should sound at
Upper Control station. If it does not, review
Section 3 for troubleshooting of the Platform Overload
Sensing System.
