35
MAN 604A Rev. 5
Maintenance
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 pneumatic feed line and
discharge pressure from the cylinder of the actuator, from the control unit and from the
accumulator tank, if present.
The opposition of pneumatic supply is discharged from the cylinder by the linear
movement generated from the spring releasing. It moves actuator and consequently the
valve, in hits fail safe position.
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 - Section 3.5).
If the actuator needs storage before demolition, see Section 2.2.
NOTICE
The demolition of the actuator both concerning any electrical and mechanical part should
be made by specialized staff.
Separate the parts composing the actuator according to their nature (e.g. metallic and
plastic materials, uids etc.) and send them to differentiated waste collection sites,
as provided by the laws and provisions in force.
June 2020
Installation, Operation and Maintenance Manual
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