Auxiliary Power Operation; Capacity Select - JLG 1250AJP Operation And Safety Manual

SECTION 4 - MACHINE OPERATION
4.4

AUXILIARY POWER OPERATION

The Auxiliary Power System provides a means of moving the plat-
form in the event of an engine malfunction. This system uses an
electric motor/pump unit capable of operating all boom func-
tions needed to allow the platform to be lowered to ground level.
With auxiliary power activated, the control system will attempt to
use the force of gravity to operate main lift down, tower lift down,
and tower telescope in. If appropriate movement is not detected
by the boom sensors, the auxiliary power system will supply
hydraulic flow to power boom movement. Allow sufficient oper-
ating time for system to respond.
NOTE: To ensure sufficient battery life, where possible, use the Main Lift
and Main Telescope functions to lower the platform to ground
level before using Tower Lift. Movements of the boom using aux-
iliary power will be SLOW and the movements will momentarily
stop and alternate between other functions as needed. When
operating Tower Lift, the movements will alternate between
tower lift, tower telescope, and main lift. When operating Main
Lift, the movements will alternate between main lift, tower lift,
and platform level.
4-10
4.5

CAPACITY SELECT

The Boom Control System allows the operator to select operation
in a 500 lb. (227 kg for ANSI markets and 230 kg for CE and Austra-
lia markets) capacity restriction envelope or a 1000 lb. (454 kg for
ANSI markets and 450 kg for CE and Australia markets) capacity
restriction envelope. The operator selects the desired capacity
restriction by positioning the Capacity Select switch on the plat-
form console. The Capacity Indicator shows the capacity selected,
and both capacity lights will flash and an alarm sound if the plat-
form is out of the selected capacity range.
NOTE: Operation in the 1000 lb. (454 kg for ANSI markets and 450 kg for
CE and Australia markets) envelope requires the jib to be fixed in
the centered position.
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