JLG 400CRT ANSI Operator Manual - Manual (Page 37)

SECTION 5 - EMERGENCY PROCEDURES
3121110 – JLG Lift – 5-1
SECTION 5. EMERGENCY PROCEDURES
5.1 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.
5.2 EMERGENCY TOWING PROCEDURES
Although towing the machine is prohibited, provisions for
moving the machine, in case of a malfunction or power
failure, have been incorporated. The following procedures
are to be used ONLY for emergency movement to a suit-
able maintenance area.
1. Chock the wheels securely.
2. Locate the brake cartridge on the hydraulic control
valve, located adjacent to the hydraulic oil tank on
the left side of the machine. Depress the plunger on
the brake cartridge.
3. Locate the brake release pump, in front of the
hydraulic control valve. Install the handle on the
brake release pump and pump it to release the
brake. Remove handle when finished.
4. Using suitable equipment for assistance, remove the
chocks, winch or tow the machine to an appropriate
maintenance area.
USE EXTREME CAUTION WHEN OPENING THE TOW VALVE. THE
DRIVE FUNCTION WILL STILL OPERATE WITH THE TOW VALVE
OPEN, BUT THE BRAKE IS DISABLED. ENSURE THE TOW VALVE
REMAINS CLOSED AT ALL TIMES, EXCEPT WHEN THE MACHINE
IS BEING TOWED. CLOSE THE TOW VALVE IMMEDIATELY AFTER
TOWING IS COMPLETED.
After moving the machine, complete the following proce-
dures:
1. Position the machine on a firm, level surface.
2. Chock the wheels securely.
3. Turn knob counterclockwise to engage wheell
brakes.
4. Turn the knob on the brake pump clockwise until
tight. this places the machine back into normal oper-
ation
5. Remove the chocks from the wheels.
5.3 EMERGENCY CONTROLS AND THEIR
LOCATIONS
Emergency Stop Switch
These large red buttons, one located at the Ground Con-
trol Station and one at the Platform Control Station, will
immediately stop the machine when depressed.
CHECK MACHINE DAILY TO MAKE SURE EMERGENCY STOP
BUTTON IS IN PLACE AND THAT GROUND CONTROL INSTRUC-
TIONS ARE IN PLACE AND LEGIBLE.
Ground Control Station
The Ground Control Station is located on the left side of
the machine frame. The controls on this panel provide the
means for overriding the platform controls and for control-
ling the platform lift up and down functions from the
ground. Place the power select switch in the ground posi-
tion and operate the lift switch to lift up or down.
Manual Descent
The manual descent valve is used, in the event of total
power failure, to lower the platform using gravity. The
manual descent handle is located on the rear of the
machine frame, behind the ladder. The handle is con-
nected, by a cable, to the manual descent valve on the lift
cylinder. Pulling the manual descent ring opens the valve
spool, lowering the platform.
5.4 EMERGENCY OPERATION
Use of Ground Controls
KNOW HOW TO USE THE GROUND CONTROLS IN AN EMER-
GENCY SITUATION.
Ground personnel must be thoroughly familiar with the
machine operating characteristics and the ground control
functions. Training should include operation of the
machine, review and understanding of this section and
hands-on operation of the controls in simulated emergen-
cies.