Operator unable to control machine, Platform or boom caught overhead – JLG X550AJ Operator Manual User Manual
Page 82
SECTION 5 - EMERGENCY PROCEDURES
5-2
– JLG Lift –
3128791
Operator Unable to Control Machine
IF THE PLATFORM OPERATOR IS PINNED, TRAPPED
OR UNABLE TO OPERATE OR CONTROL MACHINE:
1. Other personnel should operate the machine from
ground controls only as required.
2. Other qualified personnel on the platform may use the
platform controls. DO NOT CONTINUE OPERATION IF
CONTROLS DO NOT FUNCTION PROPERLY.
3. Cranes, forklift trucks or other equipment can be used
to remove platform occupants and stabilize motion of
the machine.
Platform or Boom Caught Overhead
If the platform or boom becomes jammed or snagged in
overhead structures or equipment, rescue platform occu-
pants prior to freeing the machine.
NOTE: The engine runs the hydraulic pump which provides
the hydraulic pressure for the hydraulic system.
The electric power provides power for the hydraulic
proportional valve solenoids to open and close which
operate various solenoids and relays on the hydraulic
system. In the event either/or both are not operating
properly, the following procedures will allow the low-
ering of the boom and platform.
Manual Descent with Engine Running and
Electrical Power
ENSURE BOOM IS NOT POSITIONED OVER THE OUTRIGGERS OR
OVERHEAD OF PERSONNEL BEFORE LOWERING.
Using Platform/Remote Control Box from Platform
The manual descent system is provided as an emergency
means to lower personnel in the platform.
1. Check that the emergency stop button is in the ON posi-
tion by turning it clockwise.
2. Depress the platform foot switch.
3. Press and hold down button 4 (item 4) with
the hazard symbol on the platform/remote
control box. The LCD display (item 14) will
indicate the triangle symbol seen on the but-
ton in LCD position 8.
4. Select a boom function to operate by moving it’s con-
troller in the direction for lowering. (items 16, 17, and 20)
5. When finished, release the emergency lowering switch
(item 4), and foot switch.
6. Position (press) the emergency stop switch to the OFF
position.