JLG 26MRT ANSI Operator Manual - Manual (Page 37)

SECTION 6 - EMERGENCY PROCEDURES
3120790 – JLG Sizzor – 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
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. Turn the knob on the pump
clockwise to close the pump valve.
4. Install the handle on the brake release pump and
pump it to release the brake.
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.
5. Locate the tow valve handle on the front of the
machine frame and turn the valve handle counter-
clockwise to open the tow valve.
6. Using suitable equipment for assistance, remove the
chocks, and move the machine to an appropriate
maintenance area.
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 the handle on the tow valve clockwise to close
the valve.
4. Turn the knob on the brake pump counterclockwise
to open the pump valve.
5. Remove the chocks from the wheels.
6.3 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 position 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 ring is located on the front of the machine
frame, between the scissor arms. The ring is connected,
by a cable, to the manual descent valve on the lift cylinder.
Pulling the manual descent ring opens the valve spool,
lowering the platform.
6.4 EMERGENCY OPERATION
Use of Ground Controls
KNOW HOW TO USE THE GROUND CONTROLS IN AN
EMERGENCY 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.