Samson 3271 Service manual

Mounting and
Operating Instructions
EB 8310-8 EN
Translation of original instructions
Edition February 2017
Type3271 Pneumatic Actuator
Actuator area: 1400-250cm²

2 EB 8310-8 EN
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 SAMSON devices.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesser[email protected]).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
(www.samson.de) > Product documentation. You can enter the document
number or type number in the [Find:] eld to look for a document.
Denition 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

Contents
EB 8310-8 EN 3
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage ................................................................8
2 Markings on the device ...............................................................................10
2.1 Actuator nameplate ......................................................................................10
3 Design and principle of operation ................................................................12
3.1 Direction of action ........................................................................................12
3.2 Signal pressure routing .................................................................................12
3.3 Fail-safe action ............................................................................................12
3.3.1 Version with direction of action "actuator stem extends" (FA) ...........................12
3.3.2 Version with direction of action "actuator stem retracts" (FE) ............................14
3.4 Technical data .............................................................................................14
4 Measures for preparation............................................................................16
4.1 Unpacking ..................................................................................................16
4.2 Transporting and lifting ................................................................................16
4.2.1 Transporting ................................................................................................17
4.2.2 Lifting ..........................................................................................................17
4.3 Storage .......................................................................................................18
4.4 Preparation for installation ............................................................................19
5 Mounting and start-up.................................................................................20
5.1 Mounting the actuator onto the valve .............................................................20
5.2 Preloading the springs ..................................................................................22
5.2.1 Tensioning the springs ..................................................................................22
5.2.2 Increasing the actuator thrust ........................................................................22
5.2.3 Adapting the travel range .............................................................................24
5.3 Additional ttings .........................................................................................24
6 Operation...................................................................................................25
6.1 Throttling service ..........................................................................................25
6.2 On/off service .............................................................................................25
6.3 Reversal of the direction of action ..................................................................25

4 EB 8310-8 EN
Contents
7 Servicing.....................................................................................................26
7.1 Preparation for return shipment .....................................................................26
7.2 Ordering spare parts and operating supplies .................................................26
8 Malfunctions ...............................................................................................27
9 Decommissioning and disassembly ..............................................................28
9.1 Decommissioning .........................................................................................28
9.2 Removing the actuator from the valve ............................................................28
9.3 Relieving the spring compression in the actuator .............................................28
9.4 Disposal ......................................................................................................28
10 Annex.........................................................................................................30
10.1 After-sales service ........................................................................................30
10.2 Spare parts .................................................................................................31

EB 8310-8 EN 5
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type3271 Actuator is designed for operating a mounted globe valve. In com-
bination with the valve, the actuator is used to shut off the ow of liquids, gases or vapors in
the pipeline. Depending on the version, the actuator is suitable for throttling or on/off ser-
vice. The actuator can be used in processing and industrial plants.
The actuator is designed to operate under exactly dened conditions (e.g. thrust, travel).
Therefore, operators must ensure that the actuator is only used in applications that meet the
specications used for sizing the actuator at the ordering stage. In case operators intend to
use the actuator in other applications or conditions than specied, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
ÎRefer to the technical data and nameplate for limits and elds of application as well as
possible uses.
Reasonably foreseeable misuse
The actuator is not suitable for the following applications:
−Use outside the limits dened during sizing and in the technical data
−Use outside the limits dened by the accessories mounted on the actuator
Furthermore, the following activities do not comply with the intended use:
−Use of non-original spare parts
−Performing service and repair work not described in these instructions
Qualications of operating personnel
The actuator must be mounted, started up, serviced, and repaired by fully trained and quali-
ed personnel only; the accepted industry codes and practices are to be observed. Accord-
ing to these mounting and operating instructions, trained personnel refers to individuals who
are able to judge the work they are assigned to and recognize possible hazards due to their
specialized training, their knowledge and experience as well as their knowledge of the appli-
cable standards.

6 EB 8310-8 EN
Safety instructions and measures
Personal protective equipment
We recommend wearing the following personal protective equipment when handling the
Type3271 Pneumatic Actuator:
−Protective gloves when mounting or removing the actuator
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions, conversions or other modications to the product are not authorized by SAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example. Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety devices
The Type3271 Actuator does 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 process medium, the operating
pressure, the signal pressure or by moving parts by taking appropriate precautions. They
must observe all hazard statements, warning and caution notes in these mounting and oper-
ating instructions, especially for installation, start-up, and service work.
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 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.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
well as the specied hazard statements, warning and caution notes. Furthermore, the operat-
ing personnel must be familiar with the applicable health, safety and accident prevention
regulations and comply with them.

EB 8310-8 EN 7
Safety instructions and measures
Referenced standards and regulations
According to the ignition risk assessment performed in accordance with EN13463-1:2009,
section 5.2, the non-electrical actuators do not have their own potential ignition source even
in the rare incident of an operating fault. As a result, they do not fall within the scope of Di-
rective 2014/34/EU.
ÎFor connection to the equipotential bonding system, observe the requirements specied in
section 6.4 of EN60079-14 (VDE0165 Part 1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Mounting and operating instructions for the mounted valve
−Mounting and operating instructions for mounted valve accessories (positioner, solenoid
valve etc.)
−Safety Manual uSH8310 for use in safety-instrumented systems
−uAB0100 for tools, tightening torques, and lubricant
The mounting and operating instructions for all supplied devices are included in the delivery.
The latest versions of the documents are available on our website at uwww.samson.de >
Product documentation.
1.1 Notes on possible severe personal injury
DANGER
!
Risk of bursting in the actuator.
Actuators are pressurized. Improper opening can lead to actuator components burst-
ing.
ÎBefore starting any work on the actuator, depressurize all plant sections concerned
and the actuator.

8 EB 8310-8 EN
Safety instructions and measures
1.2 Notes on possible personal injury
WARNING
!
Crush hazard arising from moving parts.
The actuator contains moving parts (actuator stem), which can injure hands or ngers if
inserted into the actuator.
ÎDo not insert hands or ngers into the yoke while the valve is in operation.
ÎWhile working on the actuator, disconnect and lock the pneumatic air supply as well
as the control signal.
Risk of personal injury when the actuator vents.
While the valve is operating, the actuator may vent during closed-loop control or when
the valve opens or closes.
ÎInstall the control valve in such a way that the actuator does not vent at eye level.
ÎUse suitable silencers and vent plugs.
ÎWear eye protection when working in close proximity to the control valve.
Risk of personal injury due to preloaded springs.
Actuators with preloaded springs are under tension. They can be identied by the long
bolts protruding from the top and bottom diaphragm cases.
ÎBefore starting any work on the actuator, relieve the compression from the preload-
ed springs (see section9.3).

EB 8310-8 EN 9
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Risk of damage to the actuator due to incorrectly attached lifting equipment.
The eyebolt or swivel lifting hook on the top diaphragm case is intended for mounting
and removing the actuator as well as lifting the actuator without valve.
ÎDo not lift the entire control valve assembly using the eyebolt or swivel lifting hook.
Risk of actuator damage due to excessively high or low tightening torques.
Observe the specied torques on tightening actuator components. Excessively tightened
torques lead to parts wearing out quicker. Parts that are not tightened far enough may
loosen.
ÎObserve the specied tightening torques (uAB0100).
Risk of actuator damage due to the use of unsuitable tools.
Certain tools are required to work on the actuator.
ÎOnly use tools approved by SAMSON (uAB0100).
Risk of actuator damage due to the use of unsuitable lubricants.
The lubricants to be used depend on the actuator material. Unsuitable lubricants may
corrode and damage the valve surface.
ÎOnly use lubricants approved by SAMSON (uAB0100).

10 EB 8310-8 EN
Markings on the device
2 Markings on the device
2.1 Actuator nameplate
The nameplate is stuck on the diaphragm casing. It includes all details required to identify the
device:
2Conguration ID
3 Serial number
4 Actuator area
5Bench range in bar
6Bench range in psi
7Operating travel in mm
8Operating range in bar
9Operating range in psi
10 Permissible supply pressure pmax in bar
11 Permissible supply pressure pmax in psi
12 Symbol indicating fail-safe action
Actuator stem extends (FA)
Actuator stem retracts (FE)
Manual override
14 Connecting thread
15 Diaphragm material
16 Date of manufacture
7
4
14
15 12 6
5
8
9
10 11
SAMSON 3271
Made in Germany
Var-ID
3
2
Serial no.
16
Fig.1: Nameplate

EB 8310-8 EN 11

12 EB 8310-8 EN
Design and principle of operation
3 Design and principle of oper-
ation
The Type3271 Pneumatic Actuators with
1400-250cm², actuator area contain a roll-
ing diaphragm (A4) and internal springs
(A10). They are mounted on SAMSON Se-
ries240, 250, 280, 290, and 590 Valves.
The signal pressure pst creates the force F =
pst · A at the diaphragm surface A which is
opposed by the springs (A10) in the actua-
tor. The bench range is determined by the
number of springs used and their compres-
sion, taking into account the rated travel. The
travel is proportional to the signal pressure
pst. The direction of action of the actuator
stem (A7) depends on how the springs are
installed in the actuator.
The stem connector clamps (A26/27) con-
nect the actuator stem (A7) with the plug
stem of the valve. A support stem (A174)
and support bearing (A173) are screwed
onto the actuator stem.
The actuators are tted with an anti-rotation
xture (A88, A127). Guide rods (A170) are
installed to stabilize the springs.
3.1 Direction of action
The direction of action is determined by how
the springs and diaphragm plate are ar-
ranged in the actuator. With direction of ac-
tion "actuator stem retracts", the compressed
air is applied to the signal pressure connec-
tion on the top diaphragm case. With direc-
tion of action "actuator stem extends", the
compressed air is applied to the signal pres-
sure connection on the bottom diaphragm
case.
3.2 Signal pressure routing
In the "actuator stem extends" version, the
signal pressure is routed through the bottom
signal pressure connection (S) to the bottom
diaphragm chamber and moves the actuator
stem (A7) upward opposing the spring force.
In the "actuator stem retracts" version, the
signal pressure is routed through the top sig-
nal pressure connection (S) to the top dia-
phragm chamber and moves the actuator
stem (A7) downward opposing the spring
force.
3.3 Fail-safe action
When the signal pressure is reduced or the
control signal fails, the fail-safe action of the
actuator depends on whether the springs are
installed in the top or bottom diaphragm
chamber.
3.3.1 Version with direction of
action "actuator stem
extends" (FA)
When the signal pressure is reduced or the
control signal fails, the springs move the ac-
tuator stem downward and close the globe
valve. The valve opens when the signal pres-
sure is increased enough to overcome the
spring force.

EB 8310-8 EN 13
Design and principle of operation
A16
A1
A10
A88
A180
A127
A4
A5
A2
S
A8
A7
A26/27
A170
A173
A174
A1 Top diaphragm case
A2 Bottom diaphragm case
A4 Diaphragm
A5 Diaphragm plate
A7 Actuator stem
A8 Ring nut
A10 Spring
A16 Vent plug
A26/27 Stem connector clamp
A88 Rod (anti-rotation xture)
A127 Pipe (anti-rotation
xture)
A170 Guide rod
A173 Support bearing
A174 Support stem
A180 Distance ring
S Signal pressure
connection
Fig.2: Type3271 Pneumatic actuator with 1400cm² actuator area and 250mm travel

14 EB 8310-8 EN
Design and principle of operation
3.3.2 Version with direction of
action "actuator stem
retracts" (FE)
When the signal pressure is reduced or the
control signal fails, the springs move the ac-
tuator stem upward and open a mounted
globe valve.
The valve closes when the signal pressure is
increased enough to overcome the spring
force.
3.4 Technical data
The nameplate provides information on the
actuator version (see section2.1).
More information is available in Data Sheet
uT8310‑8.
Compliance
The Type3271 Pneumatic Actuator bears the
EAC mark of conformity.
Temperature range
The permissible temperature range depends
on the diaphragm material:
Diaphragm material Temperature range
NBR1) –35 to +90°C
–31 to +194°F
PVMQ –60 to +90°C
–76 to +194°F
1) In on/off service, lowest temperature restricted
to –20°C (–4°F).
Supply pressure
The maximum permissible supply pressure is
6bar in throttling service. See section6.2
for restrictions in on/off service.
Accessories
The pneumatic actuator has a female thread
on the top diaphragm case to allow an eye-
bolt or swivel lifting hook to be screwed into
it. The eyebolt can be used to vertically lift
the actuator and is included in the scope of
delivery. The swivel lifting hook is designed
for setting a control valve assembly upright
or for lifting the actuator without valve. The
swivel lifting hook can be ordered (accesso-
ries).
Item no.
Actuator area Eyebolt
(DIN580)
Swivel lifting
hook
1400-250cm² 8325-1101 8442-1019
See section4.2.2 for detailed information on
how to lift the actuator.
Note

EB 8310-8 EN 15
Design and principle of operation
Table1: Dimensions in mm and weights in
kg
Actuator area cm² 1400
Travel mm 250
Height
H800
H4ratedFA 415
H4maxFA 420
H4maxFE 170
H6 85
H71) 110
Diameter ØD 534
ØD2 40
Ød (thread) M100x2
Air connection aG1/1NPT
Weight
Approx. kg 417
1) Height of eyebolt according to DIN580.
Height of the swivel lifting hook may differ.
a
a
HH
7
ØD
ØD2
Ød
H4
H6

16 EB 8310-8 EN
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as fol-
lows:
1. Check the scope of delivery. Compare
the shipment received against the deliv-
ery note.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent (re-
fer to delivery note).
4.1 Unpacking
Do not remove the packaging until immedi‑
ately before mounting.
Proceed as follows to lift and mount the actu-
ator:
1. Remove the packaging from the actuator.
2. Dispose of the packaging in accordance
with the valid regulations.
4.2 Transporting and lifting
Hazard due to suspended loads falling.
Stay clear of suspended or moving loads.
Risk of lifting equipment tipping and risk of
damage to lifting accessories due to exceed‑
ing the rated lifting capacity.
−Only use approved lifting equipment and
accessories whose minimum lifting capaci‑
ty is higher than the weight of the actuator.
−Refer to section3.4 for weights.
Risk of actuator damage due to incorrectly
attached slings.
−The eyebolt or swivel lifting hook on the
top diaphragm case is intended for mount‑
ing and removing the actuator as well as
lifting the actuator without valve. Do not lift
the entire control valve assembly using the
eyebolt or swivel lifting hook.
−Observe lifting instructions (see sec‑
tion4.2.2).
SAMSON's After‑sales Service department
can provide more detailed transport and lift‑
ing instructions on request.
Note
DANGER
!
WARNING
!
NOTICE
!
Tip

EB 8310-8 EN 17
Measures for preparation
4.2.1 Transporting
The actuator can be transported using lifting
equipment (e.g. crane or forklift).
ÎLeave the actuator in its transport con-
tainer or on the pallet to transport it.
ÎObserve the transport instructions.
Transport instructions
−Protect the actuator against external in-
uences (e.g. impact).
−Do not damage the corrosion protection
(paint, surface coatings). Repair any
damage immediately.
−Protect the actuator against moisture and
dirt.
−The permissible transportation tempera-
ture of standard control valves is –20 to
+65°C.
Contact SAMSON's After‑sales Service de‑
partment for the transportation temperatures
of other valve versions.
4.2.2 Lifting
To mount a large actuator, use lifting equip-
ment (e.g. crane or forklift) to lift it.
Lifting instructions
−Secure slings against slipping.
−Make sure the slings can be removed
from the actuator once it has been
mounted onto the valve.
−Prevent the actuator from tilting or tip-
ping.
−Do not leave loads suspended when in-
terrupting work for longer periods of
time.
−Make sure that the additional sling be-
tween the eyebolt or swivel lifting hook
and the rigging equipment (hook, shack-
le etc.) does not bear any load when lift-
ing control valves larger than DN150
with the actuator already mounted. The
sling only protects the control valve from
tilting while being lifted. Before lifting the
control valve, tighten the sling.
Lifting the actuator (without valve)
Risk of actuator damage due to incorrectly
attached slings.
The eyebolt or swivel lifting hook on the top
diaphragm case is intended for mounting
and removing the actuator as well as lifting
the actuator without valve. Do not lift the en‑
tire control valve assembly using the eyebolt
or swivel lifting hook.
1. Attach a sling to the eyebolt or swivel lift-
ing hook of the actuator and to the rig-
ging equipment (e.g. hook) of the crane
or forklift (see Fig.3).
2. Carefully lift the actuator. Check whether
the lifting equipment and accessories can
bear the weight.
3. Move the actuator at an even pace to the
mounting site.
Note
NOTICE
!

18 EB 8310-8 EN
Measures for preparation
4. Mount the actuator to the valve. See sec-
tion5.1.
5. Remove slings after mounting.
We recommend using a hook with safety
latch (see Fig.3). The safety latch prevents
the slings from slipping during lifting and
transporting.
Lifting the entire control valve assembly
A swivel lifting hook can be screwed into the
female thread on the top diaphragm case
(see section3.4 on Accessories). The swivel
lifting hook is designed for setting a control
valve assembly upright.
ÎSee associated valve documentation for
instructions on how to lift a control valve.
4.3 Storage
Risk of actuator damage due to improper
storage.
−Observe storage instructions.
−Avoid long storage times.
−Contact SAMSON in case of different stor‑
age conditions or long storage periods.
We recommend regularly checking the actu‑
ator and the prevailing storage conditions
during long storage times.
Tip
NOTICE
!
Note
Fig.3: Lifting point on the actuator
Storage instructions
−When the valve and actuator are al-
ready assembled, observe the storage
conditions for control valves. See associ-
ated valve documentation.
−Protect the actuator against external in-
uences (e.g. impact).
−Do not damage the corrosion protection
(paint, surface coatings). Repair any
damage immediately.
−Protect the actuator against moisture and
dirt. Store it at a relative humidity of less

EB 8310-8 EN 19
Measures for preparation
than 75%. In damp spaces, prevent con-
densation. If necessary, use a drying
agent or heating.
−Make sure that the ambient air is free of
acids or other corrosive media.
−The permissible storage temperature of
standard control valves is –20 to +65°C.
Contact SAMSON's After‑sales Service de‑
partment for the storage temperatures of oth‑
er valve versions.
−Do not place any objects on the actuator.
Special storage instructions for elastomers
Elastomer, e.g. actuator diaphragm
−To keep elastomers in shape and to pre-
vent cracking, do not bend them or hang
them up.
−We recommend a storage temperature of
15°C for elastomers.
−Store elastomers away from lubricants,
chemicals, solutions, and fuels.
SAMSON's After‑sales Service department
can provide more detailed storage instruc‑
tions on request.
4.4 Preparation for installation
Proceed as follows:
ÎCheck the actuator for damage.
ÎCheck to make sure that the type desig-
nation, material, and temperature range
of the actuator match the plant condi-
tions.
ÎCheck the pressure gauge installed on
valve accessories to make sure it func-
tions.
ÎWhen the valve and actuator are al-
ready assembled, check the tightening
torques of the bolted joints (uAB0100).
Components may loosen during trans-
port.
Note
Tip

20 EB 8310-8 EN
Mounting and start-up
5 Mounting and start-up
SAMSON control valves are delivered ready
for use. In special cases, the valve and actu-
ator are delivered separately and must be
assembled on site. The procedure to mount
and start up the actuator are described in
following.
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specied torques on tightening
actuator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Observe the specied tightening torques
(uAB0100).
Risk of actuator damage due to the use of
unsuitable tools.
Only use tools approved by SAMSON
(uAB0100).
See associated valve documentation for ad‑
ditional mounting instructions.
5.1 Mounting the actuator onto
the valve
Proceed as follows if the valve and actuator
have not been assembled by SAMSON:
−Remove the mounted actuator before
mounting another actuator (see sec‑
tion9.3).
−Preloading the actuator springs increases
the thrust and reduces the travel range of
the actuator (see section5.2).
The valve and actuator are assembled with
special attention paid to the actuator's bench
range and direction of action. These details
are specied on the actuator nameplate (see
section2.1).
1. Loosen the lock nut and stem connector
nut on the valve.
2. Press the plug together with the plug stem
rmly into the seat ring.
3. Thread down the lock nut and stem con-
nector nut.
4. Remove the clamps of the stem connector
(A26/27) and the ring nut (A8) from the
actuator.
5. Slide the ring nut over the plug stem.
6. Place the actuator onto the valve bonnet
and secure it with the ring nut.
7. Determine the lower and upper signal
pressure range values:
The lower signal pressure range value is
the same as the minimum value of the
bench range or operating range (with
preloaded springs).
NOTICE
!
NOTICE
!
Note
Note
Tip