JLG EC450AJ Operation & Safety Manual page 40

Machine Controls and Indicators
3.3.1 Ground Control Station Functions
When operating the boom ensure there are no personnel around or under
platform.
To avoid serious injury, do not operate machine if any control levers or toggle
switches controlling platform movement do not return to the off or neutral position
when released.
When the machine is shut down the power / emergency stop switch must be
positioned to the off position to prevent draining the batteries.
Note: When machine is shut down the Platform / Ground Select switch and Emer-
gency Stop must be positioned to Off.
To operate machine from the platform, the Platform / Ground Select switch
must be turned to the blue square.
To operate the machine from the ground, the Platform / Ground Select switch
must be turned to the purple square.
Auxiliary Descent Enable
To use auxiliary descent enable, the switch must be held down for the dura-
tion of function use.
Jib Lift
Provides raising and lowering of the jib.
Machine Safety System Override (MSSO) (If Equipped)
Provides emergency override of function controls that are locked out in the
event of Load Sense System activation.
Main Boom Lift
Provides raising and lowering of the main boom.
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WARNING
WARNING
CAUTION
31219187 EC450AJ, EC520AJ