Page 14
December 2007
SJ 86T
It is the responsibility of the operator to read, completely understand and follow all instructions and warnings
contained in this operating manual and on the MEWP.
F
AMILIARIZA
TION
2.2-10a Platform Load Sensing System
The platform load sensing system is a device that senses for an overload on the platform before the system disables
boom and drive functions. This system is active when MEWP is powered on.
If the platform is overloaded while in work mode (boom is raised greater than 15 degrees from horizontal or is
extended greater than 6 inches), the load sensing system will disable all normal functions and signal the operator
with an indicator light and an audible alarm.
If the platform is overloaded while in travel mode, the load sensing system will signal the operator with an indicator
light and an audible alarm but will not disable any normal functions.
The following table shows the progression of warnings, indicated to the operator, up to the point of overload.
2.2-10b Overload Status Table
Weight
Indicator Light
Audible Alarm
Platform Function Controls
93% - 99%
On
Off
Enabled
≥ 100%
(Work Mode)
Flashing
Pulsing
Disabled
≥ 100%
(Travel Mode)
Flashing
Pulsing
Disabled
1133AB-CE
WARNING
Do not operate emergency power unit if platform capacity is exceeded. If the platform is overloaded
due to contact with an overhead obstruction, do one of the following:
• Remove the obstruction from the platform, then after a four-second delay normal functions
can be resumed.
• Use the emergency power unit at the base control console to release the platform from the
obstruction.
WARNING
If the platform load sensing system is in fault mode (capacity zone lights flash alternately, overload
light flashes and capacity zone border light illuminates), do the following:
• Ensure platform is level and there are no obstructions contacting the platform.
If the platform load sensing system remains in fault mode, the emergency power unit may be used
to lower the platform. Contact a competent/qualified person for repairs.
Control Functions
Section 2 - Familiarization
