OLGAS-H
– High pressure spring return hydraulic actuator
Use and maintenance manual
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Pag. 42
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5.4 DISMANTLING AND DEMOLITION
Before starting the disassembly a large area should be created
around the actuator so to allow any kind of movement without
problems of further risks created by work-site.
Before disassembling the actuator it is necessary to close the
hydraulic supply line and discharge pressure from the cylinder
of the actuator, from the control unit and from the accumulator
tank, if present. If the actuator can be operated, it is essential to
take it to fail safe position, with the spring totally extended
If actuator is still mounted onto the valve, loosen the threaded
connections between valve and actuator (screws, tie rods, nuts)
Lift the actuator using the proper lifting points (see chapter 2.2).
If the actuator needs storage, before demolition, see chapter 2.3.
The demolition of the actuator both concerning any electrical
and mechanical parts should be made by specialized staff
Separate the parts composing the actuator according to their nature
(ex. metallic, and plastic materials, fluids etc.) and send them to
differentiated waste collection sites, as provided for by the laws and
provisions in force.
