Samson EB 31a-23, Монтаж и эксплуатация

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5-1
EB 31a-23_EN
Edition: November 2021
Speci
fi cations subject to change
Mounting and assembly
5 Mounting and assembly
The work described in this section is only to be performed by ful-
ly trained and quali
fi ed personnel.
5.1 Preparation for installation
If the actuator was shipped already assembled over the valve,
the setting of the actuator and control system (if any) should have
been already done by the valve manufacturer or automation
center.
If the actuator was shipped separately from the valve, the setting
of the actuator and control system must be done while assem-
bling the actuator on top of the valve.
The actuator assembly on valve can be performed by:
− Mounting directly the actuator over the valve interface.
− Assembling a bracket and a coupling between the actuator
and the valve.
5.2 Control and signal devices assembly
The PFEIFFER Quarter-turn actuators can be controlled by directly
mounted devices or remote control systems. Therefore PFEIFFER
actuators have direct mounting interfaces (Fig. 5-1) in order to
allow control and signal devices assembly (e.g. solenoid valve,
positioner, switchbox, etc) and threaded connections for remote
control systems.
Ö
Refer to the documentation available from control and signal
devices manufacturers for mounting and operating instruc-
tions.
Fig. | 5-1: Accessory connection
5.3 Mounting the actuator over the valve
Risk of bursting in the actuator!
Pneumatic actuators are pressure equipment that may burst when
handled incorrectly. Flying projectile fragments or components
can cause serious injury or even death.
Ö
Before starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
Crush hazard arising from moving parts!
The actuator and the valve assembly contains moving parts,
which can injure hands or
fi ngers.
Ö
Do not touch or insert hands or fi nger into moving parts
Ö
Before starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
Ö
Do not impede the movement of the pinion and the pistons by
inserting objects into the actuator.
Risk of damage and malfunction due to torque limit violation!
Considering the maximum actuator output torque, the maximum
air supply pressure and the maximum valve torque, according to
ISO 5211, the actuator maximum transmissible output torque
must not exceed the torque limit in relation to the available ISO
fl ange and the drive shaft connection.
Ö
Refer to section “2 Markings on the device” for name plate
details.
Risk of personal injury due to preloaded and compressed
springs!
End caps are under tension due to compressed springs. Further-
more incorrect spring cartidges disassembly could result in seri-
ous injury.
Ö
Before starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
Ö
Make sure that the actuator is in the closed position (0°).
Risk of actuator damage due to excessively high or low tight-
ening torques!
Observe the speci fi ed torques on tightening actuator components
(bolts and nuts). Excessive tightening torques lead to parts wear-
ing out quicker. Parts that are not tightened enough may loosen.
Ö
Refer to section “15.1.1 Tightening torques”.
DANGER
WARNING
NOTICE