JLG 800A Operation And Safety Manual page 50

8. Platform/Ground Select Switch
A three position, key operated switch supplies power to the
platform control console when positioned to PLATFORM.
With the switch key held in the GROUND position, power is
shut off to platform and only ground controls are operable.
NOTE: With the Platform/Ground Select Switch in the center position,
power is shut off to controls at both operating stations.
9. Swing Control
The SWING control switch provides 360 degrees continuous
turntable rotation when positioned to RIGHT or LEFT.
WHEN OPERATING THE BOOM ENSURE THERE ARE NO PERSONNEL AROUND OR
UNDER PLATFORM.
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SECTION 3 - MACHINE CONTROLS AND INDICATORS
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR
TOGGLE SWITCHES CONTROLLING PLATFORM MOVEMENT DO NOT RETURN TO THE
OFF POSITION WHEN RELEASED.
TO AVOID UPSET AND SERIOUS INJURY, DO NOT OPERATE MACHINE IF TOWER LIFT
AND TELESCOPE FUNCTIONS DO NOT OPERATE IN THE ABOVE SEQUENCE.
10. Tower Lift
The TOWER LIFT control switch provides raising and lower-
ing of the tower boom when positioned to UP or DOWN.
This function works only when the tower boom is fully
retracted (telescope in).
– JLG Lift – 3-5