MAN.241 Rev.5 ENG - Use and maintenance manual S23 page 68 of 127
In case you notice non-functioning of a safety
device, ask for help to C.M.C. Service.
The following are the safety devices available to the
user, in order to understand the behavior of the ma-
chine and the possible work sequences:
A - Electrical devices
• Removable key for the ignition from the chas-
sis.
• Emergency stop buttons on the two control
stations.
• Basket levelling manoeuvre only allowed
when the MEWP aerial part is in rest position
(telescopic boom on its support).
• Microswitch blocking the outriggers controls
with booms lifted and if the extension is not in
withdrawn position;
• Microswitch for outriggers end-of-stroke;
• Protection fuses against brownout, both on
the power circuit and on the control circuit;
• All machine controls hold-to-run;
• Emergency buttons in the control stations.
• Interlock stabilizers-boom manoeuvre:
- block of the manoeuvres of the MEWP
aerial part when this is not stabilized;
- block of the manoeuvres of stabilizers re-
turn/extraction when the MEWP aerial part
is not in rest position.
• Warning light - machine stabilized.
• Warning light - electrical supply of the MEWP.
B - Hydraulic devices
• Maximum pressure valves for the protection
of the entire hydraulic circuit and the individual
parts of the system.
• Block valve and parachute valve mounted on
the lifting cylinders.
• Manual pump for emergency operations.
• Oil flow regulator for the control of the descent
speed.
C - Mechanical devices
• Hydraulically controlled negative disc brakes.
• 1,10 m height border guardrail on the basket.
• Mobile bar for access to the basket with grav-
ity closing.
• Basket with safety belts connections.
• Mechanical blocking system of turret rotation.
• Limit switch stop-lowering boom.
• Limit switch boom centring.
• Limit switch stabilizers opening.
• Limit switch boom lifting-lowering in parking
position.
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