Samson EB 31a-23 Service manual

PFEIFFER Chemie-Armaturenbau GmbH · Hooghe Weg 41 · 47906 Kempen · Germany
Telefon: [phone] · Telefax: [phone]
[email protected] · www.pfeiffer-armaturen.com
MOUNTING AND
OPERATING INSTRUCTIONS
EB 31a-23
Original instruction
Quarter-turn actuator with adjustable hydraulic damping
Version HCD DAP / HCD SRP
Edition November 2021

EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting
and operating the device safely.
The instructions are binding for handling PFEIFFER devices. The
images shown in these instructions are for illustration purposes
only. The actual product may vary.
ÖFor the safe and proper use of these instructions, read them
carefully and keep them for later reference
ÖIf you have any questions about these instructions, contact
PFEIFFER after-sales service
ÖThese instructions apply only to the actuator itself. In addi-
tion, refer to the instructions of the mounted valve
Definition of signal words
Hazardous situations which, if not avoided, will result in death or
serious injury
Hazardous situations which, if not avoided, could result in death
or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
WARNING
NOTICE
Note
Tip

EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Contents
Inhalt
1 Safety instructions and measures 1-1
1.1 Notes on possible severe personal injury 1-2
1.2 Notes on possible personal injury 1-2
1.3 Notes on possible property damage 1-2
2 Markings on the device 2-1
2.1 Actuator name plate 2-1
2.2 HCD hydraulic circuit extra labelling 2-2
3 Design and principle of operation 3-1
3.1 HCD actuator 3-1
3.2 Direction of action and fail position 3-1
3.3 HCD actuator with hydraulic circuit 3-1
3.3.1 HCD hydraulic circuit operating function 3-2
3.3.2 How to adjust the operating time (for standard rotation - CW to Close top view) 3-2
3.3.3 Pneumatic / Hydraulic circuit scheme 3-2
3.4 Technical data 3-3
4 Shipment and on-site transport 4-1
4.1 Accepting the delivered goods 4-1
4.2 Removing the packaging from the actuator 4-1
4.3 Transporting and lifting the actuator 4-1
4.3.1 Transporting the actuator 4-1
4.3.2 Lifting the actuator 4-1
4.4 Storing the actuator 4-2
5 Mounting and assembly 5-1
5.1 Preparation for installation 5-1
5.2 Control and signal devices assembly 5-1
5.3 Mounting the actuator over the valve 5-1
6 Start-up 6-1
7 Operation 7-1
8 Malfunctions 8-1
8.1 Troubleshooting 8-1
8.2 Emergency action 8-1

EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Contents
9 Service 9-1
9.1 Preparation for servicing 9-1
9.2 Part lists 9-2
9.2.1 Part list for Quarter-turn actuator in standard version 9-2
9.2.2 Part list for Quarter-turn actuator in HCD version 9-4
9.2.3 HCD with hydraulic circuit part list 9-5
9.3 Disassembly 9-5
9.3.1 Position indicator removal 9-5
9.3.2 Hydraulic fluid removal 9-6
9.3.3 Stop cap screws removal 9-6
9.3.4 End caps disassembly 9-7
9.3.5 HCD components disassembly 9-8
9.3.6 Pistons disassembly 9-8
9.3.7 Drive shaft disassembly 9-9
9.4 Service operation 9-9
9.5 Reassembly 9-9
9.5.1 Drive shaft reassembly 9-10
9.5.2 Pistons reassembly 9-10
9.5.3 HCD components reassembly 9-11
9.5.4 End cap reassembly 9-12
9.5.5 HCD chamber filling 9-13
9.5.6 Position indicator reassembly 9-15
9.5.7 Stop cap screws reassembly 9-15
9.5.8 Stroke adjustment 9-15
9.5.9 Mounting the actuator over the valve 9-15
10 Decomissioning 10-1
11 Removal 11-1
12 Repairs 12-1
13 Disposal 13-1
14 Certificates 14-1
15 Annex 15-1
15.1 Tightening torques, lubricants and tools 15-1
15.1.1 Tightening torques 15-1
15.1.2 Lubricants 15-1
15.1.3 Tools 15-2
15.2 Spare parts 15-2
15.2.1 Spare parts for the Quarter-turn actuator with hydraulic speed control 15-3
15.2.2 Part list for BR 31a Edition 2010 Quarter-turn actuator in standard version 15-4
15.3 After-sales service 15-6

1-1
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Safety instructions and measures
1 Safety instructions and measures
Intended use
The PFEIFFER HCD actuators are designed for the automation
and operation of quarter-turn valves such as butterfly valves, ball
valves and plug valves in both indoor and outdoor applications.
Depending on the configuration, the actuator is suitable for on/
off or modulating duties. The actuator can be used in process
and industrial plants.
The actuator is designed to operate under exactly defined condi-
tions (e.g. temperature, pressure, travel). Therefore, operators
must ensure that the actuator is only used in operating conditions
that meet the specifications used for sizing the actuator at the or-
dering stage. In case operators intend to use the actuator in other
applications or conditions than specified, contact PFEIFFER.
PFEIFFER does not assume any liability for damage resulting from
the failure to use the device for its intended purpose or for dam-
age caused by external forces or any other external factors.
ÖRefer to the technical data and nameplate for limits and fields
of application as well as possible uses.
Reasonably foreseeable misuse
The actuator is not suitable for the following applications:
−Use outside the limits defined during sizing and by the tech-
nical data.
−Use outside the limits defined by the accessories connected to
the actuator.
Furthermore, the following activities do not comply with the in-
tended use:
−Use of non-original spare parts.
−Performing service and repair work not described in these in-
structions.
Qualifications of operating personnel
The actuator must be mounted, started up, serviced and re-
paired by fully trained and qualified personnel only; the accept-
ed industry codes and practices are to be observed. Ac- cording
to these mounting and operating instructions, trained personnel
refers to individuals who are able to judge the work they are as-
signed to and recognize possible hazards due to their special-
ized training, their knowledge and experience as well as their
knowledge of the applicable standards.
Personal protective equipment
We recommend wearing the following personal protective equip-
ment when handling the PFEIFFER actuators:
−Protective gloves and safety footwear when mounting or re-
moving the actuator.
−Eye protection and hearing protection while the actuator is
operating.
ÖCheck with the plant operator for details on further protective
equipment.
Revisions and other modifications
Revisions, conversions or other modifications of the product are
not authorized by PFEIFFER. They are performed at the users
own risk and may lead to safety hazards, for ex- ample. Further-
more, the product may no longer meet the requirements for its in-
tended use.
Safety devices
The PFEIFFER pneumatic actuators alone do not have any special
safety equipment.
Warning against residual hazards
To avoid personal injury or property damage, plant operators
and operating personnel must prevent hazards that could be
caused in the actuator by the signal pressure, stored spring ener-
gy or moving parts by taking appropriate precautions. They must
observe all hazard statements, warning and caution notes in
these mounting and operating instructions.
Responsibilities of the operator
The operator is responsible for proper operation and compliance
with the safety regulations. Operators are obliged to provide
these mounting and operating instructions as well as the refer-
enced documents to the operating personnel and to instruct them
in proper operation.
Furthermore, the operator must ensure that operating personnel
or third persons are not exposed to any danger.
These instructions should not supersede or replace any customer’s
plant safety or work procedures. If a conflict arises bet- ween
these instructions and the customer’s procedures, the differences
should be resolved in writing between an authorized end users
representative and an authorized PFEIFFER representative.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting
and operating instructions as well as the referenced documents
and observe the specified hazard statements, warnings and cau-
tion notes. Furthermore, the operating personnel must be familiar
with the applicable health, safety and accident prevention regu-
lations and comply with them.
Referenced standards and regulations
−PFEIFFER actuators are designed, produced and classified ac-
cording to the European ATEX directive 2014/34/EU. Before
using the actuators in potentially explosive atmosphere areas,
verify the actuator compliance with the required ATEX classifi-
cation.
ÖRefer to the nameplate and the ATEX safety instructions.
−PFEIFFER actuators are SIL certificated.
ÖRefer to the SIL Certificate available from PFEIFFER for the ac-
tuators SIL capability.
−Referring to Machine Directive 2006/42/EC, actuators are
classified as “partly machinery” (see Declaration of incorpo-
ration).

1-2 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Safety instructions and measures
Therefore, the actuator cannot to be put into service until the
machinery and/or the final system, where the actuator is in-
corporated, will be declared in compliance with the require-
ments of the Directive.
−The PFEIFFER pneumatic actuators are designed according to
the criteria of Article 1, paragraph 2. j) ii) of the Pressure
equipment directive (PED) 2014/68/EU. Therefore, accord-
ing to the directive 2014/68/EU they are not to be consid-
ered pressure equipment’s.
ÖRefer to the EU Declaration of Conformity available from
PFEIFFER.
−The PFEIFFER actuators are in compliance with the
TR-CU10/2011 and TR-CU12/2011.
Referenced documentation
The further documents apply in addition to these mounting and
operating instructions:
−Mounting and operating instructions for the valve, available
from the valve manufacturer.
−Mounting and operating instructions for control and signal
devices (positioner, solenoid valve, etc.) available from devic-
es manufacturer.
−ATEX safety manual.
−SIL safety manual for use in safety-instrumented systems.
1.1 Notes on possible severe personal injury
Risk of bursting due to incorrect opening of pressurized equip-
ment or components!
Pneumatic actuators are pressure equipment that may burst when
handled incorrectly. Flying projectile fragments or components
can cause serious injury or even death.
ÖBefore starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
Risk of severe personal injury due to suspended loads falling!
ÖStay far from suspended or moving loads.
ÖClose off and secure the transport paths.
1.2 Notes on possible personal injury
Risk of lifting equipment tipping over and risk of damage to
lifting accessories due to exceeding the rated lifting capacity!
ÖUse only approved lifting equipment and accessories whose
maximum lifting capacity is higher than the actuator weight
(including the packaging, if applicable).
DANGER
WARNING
Crush hazard arising from moving parts!
The actuator and the valve assembly contains moving parts,
which can injure hands or fingers.
ÖDo not touch or insert hands or finger into moving parts.
ÖBefore starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
ÖDo not block the movement of the pinion and the pistons by
inserting objects into the actuator.
Risk of personal injury during actuator air exhaust!
In case of pneumatic version, the actuator is operated with air.
As a result, air is exhausted during operation.
ÖInstall the air exhaust components in such a way that exhaust
ports are not located at eye level and the actuator does not
discharge at eye level in the working position.
ÖUse suitable silencers and vent plugs.
ÖWear eye and hearing protection when working near the ac-
tuator.
Risk of personal injury due to preloaded and compressed
springs!
End caps are under tension due to compressed springs.
Furthermore, incorrect spring cartridges disassembly could result
in serious injury.
ÖBefore starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
ÖMake sure that the actuator is in the closed position (0°) while
disassembling the end caps and the stop screws have been
correctly removed.
ÖDo not disassemble individual spring cartridges.
ÖFor spring cartridges service contact PFEIFFER.
Risk of personal injury through incorrect operation, use or in-
stallation as a result of information on the actuator being illegi-
ble!
Over time, markings, labels and nameplates on the actuator may
become covered with dirt or become illegible in some other way.
As a result, hazards may go unnoticed and the necessary in-
structions not followed. There is a risk of personal injury.
ÖKeep all relevant markings and inscriptions on the device in a
constantly legible status.
ÖImmediately renew damaged, missing or incorrect name
plates or labels.
1.3 Notes on possible property damage
Risk of actuator damage due to incorrectly attached slings!
ÖDo not attach load-bearing slings to the travel stop.
WARNING
HINWEIS

1-3
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Safety instructions and measures
Risk of actuator damage due to the use of inappropriate tools!
Certain tools are required to work on the actuator.
ÖDo not use damaged tools. Refer to section “15.1.3 Tools”.
Risk of actuator damage due to excessively high or low tight-
ening torques!
Observe the specified 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.
ÖRefer to section “15.1.1 Tightening torque”.
Risk of actuator damage due to the use of unsuitable lubri-
cants!
The lubricants to be used depend on the actuator material and
operating temperatures. Unsuitable lubricants may corrode and
damage the components.
ÖUse only lubricants approved by PFEIFFER. Refer to section
“15.1.2 Lubricants”.
NOTICE

1-4 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Safety instructions and measures

2-1
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Markings on the device
2 Markings on the device
2.1 Actuator name plate
The actuator type, size, operating pressure, output torque, direction of rotation, fail-safe action, operating temperature, and type of at-
tachment are determined by the actuator designation.
Keep the nameplate to ensure that the actuator can be identified at all times. Rack-and-pinion actuators have nameplates, which show
the following information:
Fig.|2-1: Name plates for double-acting quarter-turn actuators Type DAP
Fig.|2-2: Name plates for single-acting quarter-turn actuators Type SRP
Keep the labeling on the valve body and on the nameplate to en-
sure that the valve can be identified at all times.
Note

2-2 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Marking on the device
Table|2-1: Marking on the nameplate of the drive
Information Item Comment
Unique identification (variable) 1 Order number
2 Position number in the order
3 Serial number (automatically assigned
Connection for accessories (fixed, depending on
actuator size)
4 AA1 to AA5 (VDE/VDI actuator size 1 to 4)
Connection for accessories (fixed, depending on ac-
tuator
5 PC1 = G 1/8“
PC2 = G 1/4“
PC3 = G 3/8“
PC4 = G 1/2“
Maximum permissible pressure (fixed) 6 Always 10 bar for BR 31a
Principle of operation (variable) 7 Actuator function: Single-acting/double-acting
8 Direction of action: CW = Clockwise
CCW = Counter clockwise
9 Schematic diagram: Schematic diagram of the spring function with the air
connection. Schematic diagram of NAMUR interface
with identification for ports 2 and 4
Exact type designation (variable) 10 Series: BR 31a
11 Type: SRP / DAP
12 Actuator size: 00015 to 10000
13 Spring designation: 2,5 to 6 (bar)
Opening angle (fixed, depending on actuator size) 14 0-90° +5/-15°
0-120°+/+5/-15°
0-180° +5/-15°
Article number (variable) 15 PFEIFFER article number
Version acc. to EN (fixed, depending on actuator
size)
Example: F07-Y-D-17
16 Flange F07
17 Spigot ( Y )
18 Diagonal square drive ( D )
19 Square drive, width across flats 17
Torques (variable) 20 Specification of the actuator torque depending on supply pressure
2.2 HCD hydraulic circuit extra labelling
Fig.|2-3: Extra labelling

3-1
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Design and principle of operation
3 Design and principle of operation
3.1 HCD actuator
The HCD actuator is typically used to obtain a decelerated strok-
ing time only at the end of stroke rotation.
The actuators are available in two configurations: spring return
and double acting.
Double acting - Type DAP HCD
Refer to Fig.3-1.
In case of the double acting configuration air pressure will be
necessary for both strokes
Fig.|3-1: Quarter-turn actuator Type DAP HCD
Spring return - Type SRP HCD
Refer to Fig.3-2
When air pressure is supplied through port “2“ into the actuator
body, the linear force applied on the piston surface generates the
pinion rotation, driving the valve to a defined position. At the
same time the actuator springs are compressed.
When air pressure is discharged, the springs are automatically
released, driving the rack and pistons back to the original posi-
tion and thus the valve to the fail-safe position.
Fig.|3-2: Quarter-turn actuator Type SRP HCD
The actuators can be controlled by different options:
−direct mounting of control devices (for example a solenoid
valve or a manifold) with NAMUR interface,
−threaded connections (to pressurize port “2“ and “4“) with
air lines from separate electro-pneumatic control system.
3.2 Direction of action and fail position
The standard rotating direction for the HCD actuators is clock-
wise to close.
Standard HCD actuators are designed for 90° rotating angle,
with travel stop allowing adjustment for -5° up to +15° on the
close position and for +5° up to -15° on the open position, see
Fig.3-3.
Fig.|3-3: Adjustment range
In case of pressure, power or signal failure the springs drive the
actuator in the fail position that can be CCW rotation or CW ro-
tation.
If the actuator is controlled by a control system, the FAIL position
may be different from FAIL OPEN or FAIL CLOSE.
ÖRefer to the actuator model technical data for the FAIL posi-
tion.
ÖFor the fail action and direction of rotation available options,
see section “2.1 Actuator name plate”.
3.3 HCD actuator with hydraulic circuit
The HCD actuator with hydraulic circuit is typically used to con-
trol the stroking time during all stroke rotation.
If the HCD actuator is equipped with hydraulic circuit, then read
following instruction. The HCD actuator with hydraulic circuit
permits to adjust the actuator opening and closing time operat-
ing the hydraulic valves.
Note

3-2 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Design and principle of operation
3.3.1 HCD hydraulic circuit operating func-
tion
For adjust the stroking time there are two speed control valves:
one valve regulates the opening rotation and the other valve the
closing rotation.
3.3.2 How to adjust the operating time (for
standard rotation - CW to Close top
view)
Fig.|3-4: Speed control valve
Fig.|3-5: Quarter-turn actuator HCD
Stroke Adjustment time in opening rotation
ÖUnscrew the knob safety blocking screw of the speed control
valve (1) (right position from top view)
ÖOpen or close the speed control valve until the desired stroke
time rotation is achieved
ÖMake rotation test to verify the correct stroke time in opening
rotation. Repeat the previous steps if necessary
ÖOnce the desired operating time is achieved tighten the safe-
ty blocking screw to lock the knob in place.
Stroke Adjustment time in closing rotation
ÖUnscrew the knob safety blocking screw of the speed control
valve (2) (left position from top view)
ÖOpen or close the speed control valve until the desired stroke
time rotation is achieved
ÖMake rotation test to verify the correct stroke time in closing
rotation. Repeat the previous steps if necessary
ÖOnce the desired operating time is achieved tighten the safe-
ty blocking screw to lock the knob in place.
3.3.3 Pneumatic / Hydraulic circuit scheme
Spring return
Fig.|3-6: Pneumatic / Hydraulic circuit scheme SRP HCD (Top view)
Double acting
Fig.|3-7: Pneumatic / Hydraulic circuit scheme DAP HCD (Top view)

3-3
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Design and principle of operation
3.4 Technical data
The nameplate provides information on the actuator configura-
tion.
ÖRefer to section “2.1 Actuator name plate”.
−More information’s are available in the actuator model tech-
nical data sheet available from PFEIFFER.
Power operating media
ÖUse dry or lubricated air or inert gas.
−Make sure the operating media is compatible with the actua-
tor internal parts and lubricant.
ÖIn case of pressure medium different than Group 2 fluids ac-
cording to the PED 2014/68/EU, contact PFEIFFER.
−The operating media must have a dew point equal to –20°C
(-4°F) or at least 10°C (18°F) below the ambient temperature.
−The maximum particle size contained into the operating me-
dia must not exceed 30 μm.
Supply pressure
−The maximum operating pressure is 8 bar (116 Psi)
ÖRefer to section “2.1 Actuator name plate”.
ÖRefer to the actuator model technical data for output torque
values related to the working pressure range.
Operating temperature
The name plate provides indication on the operating tempera-
tures.
– “ST” actuators for standard temperatures from -20°C
(-4°F) to +80°C (+176°F).
ÖRefer to section “15.2 Spare parts” for the soft spare parts
material and section “15.1 Tightening torques, lubricants and
tools”for lubricant type in relation to the different working
temperature ranges.
Stroking time
The stroking time depends on several factors such as supply pres-
sure, supply system capacity (tubing diameter, pneumatic acces-
sories flow capacity), valve type, valve torque, applied safety fac-
tor, cycle frequency, temperatures, etc. Nevertheless, an indica-
tion of the stroking time in clearly defined conditions is available
in the actuator model technical data sheet.

3-4 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Design and principle of operation

4-1
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Shipment and on-site transport
4 Shipment and on-site transport
The work described in this section is only to be performed by ful-
ly trained and qualified personnel.
4.1 Accepting the delivered goods
After receiving the shipment, proceed as follows:
ÖCheck the scope of delivery. Check that the specifications on
the actuator nameplate match the specifications in the deliv-
ery note. See the ‘Markings on the device‘ section for name-
plate details.
ÖCheck the shipment for transportation damage. Report any
damage to PFEIFFER and the forwarding agent (refer to de-
livery note).
ÖDetermine the weight and dimensions of the units to be lifted
and transported in order to select the appropriate lifting
equipment and lifting accessories. Refer to the transport doc-
uments and to the actuator model Technical data sheet.
4.2 Removing the packaging from the actu-
ator
ÖDo not open or remove the packaging until immediately be-
fore mounting the actuator.
ÖLeave the actuator in its transport container or on the pallet to
transport it on site.
ÖDispose and recycle the packaging in accordance with the lo-
cal regulations.
4.3 Transporting and lifting the actuator
Risk of severe personal injury due to suspended loads falling!
ÖStay far from suspended or moving loads.
ÖClose off and secure the transport parths.
Risk of lifting equipment tipping over and risk of damage to
lifting accessories due to exceeding the rated lifting capacity!
ÖUse only approved lifting equipment and accessories whose
maximum lifting capacity is higher than the actuator weight
(including the packaging, if applicable).
Risk of actuator damage due to incorrectly attached slings!
ÖOnly attach load slings to vertically lift the actuator on its
own.
ÖThe lifting points must not be used to lift the actuator and
valve assembly.
DANGER
WARNING
NOTICE
ÖDo not attach load-bearing slings to the travel stop or to ac-
cessories.
ÖDo not use damaged or defective slings.
ÖDo not shorten the slings with knots or bolts or other make-
shift devices.
ÖObserve lifting instructions, see section 4.3.2
Our after-sales service can provide more detailed transport and
lifting instructions on request.
4.3.1 Transporting the actuator
The actuator can be transported using proper lifting equipment
(e.g. crane or forklift).
ÖLeave the actuator in its transport container or on the pallet to
transport it.
ÖObserve the transport instructions.
Transport instructions
ÖProtect the actuator against external influences (e.g. impact).
ÖDo not damage the corrosion protection (paint, surface coat-
ings). Repair any damage immediately.
ÖProtect the actuator against moisture and dirt.
ÖObserve permissible temperatures, refer to the section “3.4
Technical data”
4.3.2 Lifting the actuator
ÖObserve the ruling regulations concerning the lifting opera-
tions.
ÖTo mount large actuators onto the valve, use lifting equipment
(e.g. crane or forklift) to lift it.
ÖDo not drill extra holes into the actuator.
ÖDo not use the actuator lifting points to lift the actuator and
valve assembly.
Fig.|4-1: Lifting points on the quarter-turn actuator
Tipp

4-2 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Shipment and on-site transport
Use appropriate tackles and slings to lift the actuator.
ÖRefer to technical data sheet for the actuator weight.
Lifting instructions
ÖSecure slings on the object to be transported against slipping.
ÖMake sure the slings can be removed from the actuator once
it has been mounted on the valve.
ÖPrevent the actuator from tilting or tipping.
ÖDo not leave loads suspended when interrupting work for
longer periods of time.
ÖUse a hook with safety latch to secure the slings from slipping
during lifting and transporting.
ÖFor models bigger than DAP/SRP 2000 two threaded holes
are available to lift the actuator by means of eyebolts or simi-
lar components as shown in Fig.4-2. Do not lift the actuator
and valve assembly from these lifting points.
Fig.|4-2: Lifting the quarter-turn actuator
4.4 Storing the actuator
Risk of actuator damage due to improper storage.
ÖObserve the storage instructions
ÖObserve the rubber components storage instructions.
ÖAvoid long storage times. Contact PFEIFFER in case of differ-
ent storage conditions or long storage periods.
It is recommended to regularly check the actuator and the pre-
vailing storage conditions during long storage times.
NOTICE
Info
Storage instructions
ÖStore the actuator in a clean and dry place.
ÖTemperature limits are defined by the rubber components ma-
terial.
ÖRefer to the ‘Rubber components storage instruction‘.
ÖWhen the valve and actuator are already assembled, also
observe the valve storage conditions. Refer to the valve docu-
mentation.
ÖProtect the actuator against external influences (e.g. impact)
ÖSecure the actuator in the stored position against slipping or
tipping over.
ÖDo not damage the corrosion protection (paint, surface coat-
ings). Repair any damage immediately.
ÖProtect the actuator against moisture and dirt.
ÖMake sure that the ambient air is free of acids or other corro-
sive media.
ÖDo not place any objects on the actuator.
ÖKeep for future references the relevant technical documenta-
tion of the actuator.
ÖDo not remove the plastic plugs from the air connections.
Our after-sales service can provide more detailed storage in-
structions on request.
Tipp

5-1
EB 31a-23_EN
Edition: November 2021
Specifications 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 qualified 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.
ÖRefer 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.
ÖBefore 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 fingers.
ÖDo not touch or insert hands or finger into moving parts
ÖBefore starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
ÖDo 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
flange and the drive shaft connection.
ÖRefer 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.
ÖBefore starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
ÖMake 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 specified 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.
ÖRefer to section “15.1.1 Tightening torques”.
DANGER
WARNING
NOTICE

5-2 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Mounting and assembly
Before mounting the actuator over the valve, make sure the fol-
lowing conditions are met:
−The actuator is not damaged.
−The type designation, material and temperature range of the
actuator match the ambient conditions (temperatures etc.).Re-
fer to section “2 Markings on the device” for name plate de-
tails.
−Check compatibility of the valve stem to the actuator bore.
The length, size and configurations must match.
−Check compatibility of actuator, valve and bracket bolting
pattern.
−Before fitting the actuator over the valve, make sure that the
actuator and the valve are correctly oriented, with reference
to the rotation direction and fail action required.
−Make sure that the tubing, fittings and seals connected to the
actuator are cleaned to prevent foreign matter/objects enter-
ing into the actuator’s chambers.
−When fitting accessories over the actuators, assemble them in
such a way that the emergency controls are easily accessible
for emergency manual operation.
−Check that the exhaust ports are not obstructed.
−Remove the plugs from the actuator air connections during
installation and operation, protect and close the air connec-
tions which may not being used immediately.
−Make sure that the operating pressure media composition
used for the actuator operation meets the operating condi-
tions given in this manual and corresponds to what the actu-
ator was manufactured for. Refer to section “3 Design and
principle of operation”.
−It is the user responsibility to ensure that actuator and control
components must be protected from electrical spikes, surge
and lightning strikes as well as all magnetic fields.
−Prevent any dangerous and/or corrosive substances in the
working environment enter into the internal chambers by us-
ing adequate filters and/or solenoid valves and/or any other
appropriate system.
Fig.|5-2: Mounting the valve
Refer to Fig.5-2 and proceed as follows to mount the actuator
over the valve:
ÖDisconnect any electrical/pneumatic/hydraulic power supply
ÖLay out the necessary material and tools to have them ready
during mounting
ÖThe actuator is supplied in the fail position (for single-acting),
so drive the valve in the right position as per the actuator fail
position
ÖClean the actuator‘s bore and the bottom flange
ÖClean the valve and the actuator interface to remove com-
pletely any lubricant
ÖPlace the bracket, if any, over the valve flange, tighten all
bolts and nuts and apply the correct tightening torque
ÖAssemble the coupling at first into the valve stem before the
assembly of the actuator
ÖLift the actuator

5-3
EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Mounting and assembly
Risk of damage due to incorrect alignment!
ÖSupport the actuator with the lifting equipment until the con-
nection bolts are completely tightened.
ÖMake sure to align correctly the dowel pins or the spigot, if
any.
ÖAlign the valve stem/coupling to the actuator’s bore.
ÖCarefully lower the actuator and engage the valve stem/ cou-
pling into the actuator’s bore without forcing and driving the
actuator into the position only with the weight of the actuator
itself.
ÖFix the actuator over the valve flange/bracket with the con-
nection bolts.
ÖTighten the connection bolts at the correct tightening torque
as per ISO 5211.
WARNING

5-4 EB 31a-23_EN
Edition: November 2021
Specifications subject to change
Mounting and assembly