MAN.234 Rev.3 ENG - Use and maintenance manual S19HD (PRO) page
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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 basket access with gravity closing.
• Basket with safety belts eyelets.
• Mechanical blocking system of turret rotation.
• Limit switch boom centring.
• Limit switch stabilizers opening.
• Limit switch boom lifting-lowering in parking position.
All safety devices could wear out and lose their calibration, it is
therefore necessary to control and keep them in perfect work-
ing order.
Do not rely totally on these devices to assess your working and
safety conditions; in any case, the operator must have a proper and
conscious use of the machine.
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