JLG E45A_AJ Operator Manual - Manual (Page 53)

SECTION 6 - EMERGENCY PROCEDURES
3120883 – JLG Lift – 6-1
SECTION 6. EMERGENCY PROCEDURES
6.1 GENERAL
This section provides information on the procedures to be
followed and on the systems and controls to be used in
the event an emergency situation is encountered during
machine operation. Prior to operation of the machine and
periodically thereafter , the entire operating manual,
including this section, should be reviewed by all person-
nel whose responsibilities include any work or contact
with the machine.
6.2 EMERGENCY TOWING PROCEDURES
Towing this machine is prohibited, unless properly
equipped. However, provisions for moving the machine, in
case of a malfunction or power failure, have been incorpo-
rated. The following procedures are to be used ONLY for
emergency movement to a suitable maintenance area.
1. Chock wheels securely.
2. Disengage drive hubs by reversing disconnect caps.
3. Connect suitable equipment, remove chocks, and
move machine.
After moving machine, complete the following proce-
dures:
1. Position machine on a firm and level surface.
2. Chock wheels securely.
3. Engage drive hubs by reversing disconnect caps on
hubs.
4. Remove chocks from wheels as needed.
6.3 EMERGENCY CONTROLS AND THEIR
LOCATIONS
Emergency Stop Switch.
There is one of these red mushroom shaped switches at
either Ground Controls or Platform Controls. When
depressed it will immediately stop all functions at that sta-
tion and shut down the machine.
CHECK DAILY TO MAKE SURE EMERGENCY STOP SWITCH IS
FUNCTIONING AND THAT CONTROL INSTRUCTIONS ARE IN
PLACE AND LEGIBLE.
Ground Control Station
The Ground Control Station is located on the left side of
the turntable. The controls on this panel provide the
means for overriding the platform controls and for control-
ling boom swing and lift from the ground. The PLAT-
FORM/GROUND SELECT SWITCH is a self-centering
switch. Hold SELECT SWITCH in GROUND position and
operate the desired function switch.
Manual Descent System
The manual descent system is used, in the event of total
power failure, to lower the upper and lower booms using
gravity. To operate the manual descent system, proceed
as follows:
1. Locate manual descent knob on main valve and turn
CW(clockwise). Install handle into manual descent
pump and lower the Mid and Lower Booms by
pumping the handle until they are completely low-
ered.
2. Turn manual descent knob CCW (counterclockwise)
and lower the Upper (or main) Boom by pumping
the handle until it is completely lowered. Return
manual descent knob to center position and stow
handle in bracket provided.
Manual Swing Override
The manual swing override is used to manually swing
boom and turntable assembly in the event of a total power
failure when the platform is positioned over a structure or
obstacle. To operate the manual swing override, proceed
as follows:
1. Using a 7/8 inch socket and ratchet wrench, locate
nut on swing worm gear on left side of machine.
Install wrench on nut and ratchet in the direction
desired.
Updated 12-1-99