CTE ZED 23.2 JH, Use And Maintenance Manual, Page: 15 / 56

Use and maintenance manual
ZED 23.2 JH
Code n°UM0260_GB
13
2.10 Safety devices
fig. 2.10.1 fig. 2.10.2
2.10.1 Emergency stop buttons
Red mushroom-shaped button on yellow background, one positioned (
pos. 1 fig. 2.10.1
)
on the control board in the platform, and the other (
pos. 1 fig. 2.10.2
) on the control
board on the ground. By pressing one of the two buttons, all of the work platform
manoeuvres are deactivated and the vehicle engine switches off. To reactivate
machine functioning, turn the button clockwise.
2.10.2 Maximum pressure valves
fig. 2.10.3
Positioned (
pos. 2 fig. 2.10.3
) on the base of the main
solenoid valve.
Prevents exceeding the maximum working pressure
declared.
2.10.3 Block valve on the cylinders
fig. 2.10.4
One positioned on every outrigger cylinder (
pos. 1 fig.
2.10.4
), one on the telescopic boom lifting cylinder, one on
the telescopic boom extension cylinder (
pos. 9 fig. 2.9.1
),
one mounted on the pantograph lifting cylinder (
pos. 10 fig.
2.9.1
), one on the work platform levelling cylinder and one
on the work platform rotation cylinder (
pos. 12 fig. 2.9.1
).
The block valves are hydraulically-operated; in absence of
pressure (e.g. the breakage of a supply pipe) they prevent
the uncontrolled movement of the cylinder.
2.10.4 Negative multidisk brake
Situated in the rotation motor reducer, it acts on the lack of pressure in the hydraulic
plant, blocking rotation of the turret.
2.10.5 Anti-shock valve
Mounted on the turret rotation hydraulic motor, it prevents the sudden stopping of the
rotation movement.
1
2
1
1