177
SJ82 T, SJ86 T
229040ABA
Load Sensing System
Section 5 – Procedures
5.3 Load Sensing System
5.3-1 Load Sensing System Overload Status
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 the MEWP is powered on.
If the platform is overloaded while in work mode (boom is raised greater than 15 degrees from horizon-
tal 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.
Weight
Indicator
Light
Audible Alarm
Platform Function Controls
ANSI/CSA CE & AS
KC
ANSI/CSA CE & AS
KC
93% - 99%
On
Off
Off
Off
Enabled
Enabled
Enabled
100%
Flashing
Off
Pulsing
Off
Enabled
Disabled
Enabled
>100% in Work Mode
Flashing
Pulsing
Pulsing
Pulsing
Disabled
Disabled
Disabled
>100% in Travel Mode
Flashing
Pulsing
Off
Pulsing
Disabled
Enabled
Boom: Disabled
Drive: Enabled
1400AA
WARNING
Do not operate the emergency power unit if the 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 the platform is level and there are no obstructions contacting the platform.
▪
Shut the MEWP off using either the ignition switch or the e-stop. Restart the engine.
If the platform load sensing system remains in fault mode, the emergency power unit may be used to lower
the platform from the base controls. Contact a qualified/competent person for repairs.
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