ARCA Regler GmbH
11 Disassembly / assembly of the actuator
Series 814
21 / 28
11.2022 / 1.1
11
Disassembly / assembly of the actuator
WARNING
Disregarding the safety instructions
Risk of injury!
► Observe the notes in the chapter entitled
11.1
Procedure
▪ Disassembly in the given order.
– Dismounted parts are to be secured carefully against falling down
(risk of injury or damage).
▪ Clean all components.
▪ Before assembly, all components must be inspected for damage or
wear and replaced where necessary.
▪ Assembly in the reverse order using the new components.
– Seals must generally be replaced.
– Insert O-rings and shaped rings with a suitable lubricant.
– Refer to the chapter entitled
for the tightening
torques of bolted connections.
Recommended lubricants
O-rings, shaped
rings, guide bands
Bolted connections
Roller bearing
Molykote 55
Metaflux lubricating
metal paste 70-85
Shell Retinax Grease
EP2
11.2
Guide and sealing element
▪ Remove any positioner if fitted
▪ Decouple the actuator stem (2) and the valve stem
▪
In the case of O function "Air to open":
– Remove the actuator from the valve
▪ Unscrew and remove the complete bushing (31)
▪ Replace the plain bearing (32), the sealing element (33) and the O-
ring (34)
▪ Observe the following during the assembly:
– Observe the notes in the chapter
