December 2020
Installation, Operation and Maintenance Manual
MAN 608 Rev. 5
Maintenance
36
Section 5: Maintenance
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 worksite.
!
WARNING
Before disassembling the actuator it is necessary to close the hydraulic feed line and
discharge oil 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 Section 2.2.
If the actuator needs storage, before demolition, see Section 2.3.
!
WARNING
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 differentiate waste collection sites, as
provided for by the laws and provisions in force.
