Samson 3271 Service manual

Translation of original instructions
EB 8310-7 EN
Edition April 2018
Type3271, 2800cm² Type3271, 2x2800cm² (tandem actuator)
Type 3271 Pneumatic Actuator
Actuator areas: 1400-120cm² · 2800cm² · 2x2800cm²

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
at www.samson.de > Service & Support > Downloads > Documentation.
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
2 EB 8310-7 EN

Contents
EB 8310-7 EN 3
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................8
1.3 Notes on possible property damage ................................................................9
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 ............................................................................................14
3.3.1 Version with direction of action "actuator stem extends" (FA) ...........................14
3.3.2 Version with direction of action "actuator stem retracts" (FE) ............................14
3.4 Versions ......................................................................................................14
3.5 Technical data .............................................................................................14
4 Measures for preparation............................................................................18
4.1 Unpacking ..................................................................................................18
4.2 Transporting and lifting ................................................................................18
4.2.1 Transporting ................................................................................................19
4.2.2 Lifting ..........................................................................................................19
4.3 Storage .......................................................................................................22
4.4 Preparation for installation ............................................................................23
5 Mounting and start-up.................................................................................24
5.1 Mounting the actuator onto the valve .............................................................24
5.2 Preloading the springs ..................................................................................26
5.2.1 Tensioning the springs ..................................................................................26
5.2.2 Increasing the actuator thrust ........................................................................27
5.2.3 Adapting the travel range .............................................................................27
5.3 Additional ttings .........................................................................................28
6 Operation...................................................................................................29
6.1 Throttling service ..........................................................................................29
6.2 On/off service .............................................................................................29
6.3 Reversal of the direction of action ..................................................................30

Contents
4 EB 8310-7 EN
6.4 Travel stop ...................................................................................................30
6.4.1 Bottom travel stop (minimum travel) ...............................................................30
6.4.2 Top travel stop (maximum travel) ...................................................................30
7 Servicing.....................................................................................................31
7.1 Preparation for return shipment .....................................................................31
7.2 Ordering spare parts and operating supplies .................................................31
8 Malfunctions ...............................................................................................32
9 Decommissioning and removal ....................................................................33
9.1 Decommissioning .........................................................................................33
9.2 Removing the actuator from the valve ............................................................33
9.3 Relieving the spring compression in the actuator .............................................33
9.4 Disposal ......................................................................................................34
10 Appendix....................................................................................................34
10.1 After-sales service ........................................................................................34
10.2 Spare parts .................................................................................................35

EB 8310-7 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 operating conditions 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 SAM-
SON.
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 by 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 8310-7 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 of 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 8310-7 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 and lubricant
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 8310-7 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 four long
bolts protruding from the bottom of the actuator.
ÎBefore starting any work on the actuator, relieve the compression from the preload-
ed springs (see section9.3).

EB 8310-7 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 hoist on the top diaphragm case is intended for mounting and re-
moving the actuator as well as lifting the actuator without valve.
ÎDo not lift the entire control valve assembly using the eyebolt or swivel hoist.
ÎDo not attach load-bearing lifting equipment to the handwheel or travel stop.
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 surface.
ÎOnly use lubricants approved by SAMSON (uAB0100).

10 EB 8310-7 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:
2 Conguration ID
3 Serial number
4 Actuator area
5 Bench range in bar
6 Bench range in psi
7 Operating travel in mm
8 Operating 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 8310-7 EN 11

12 EB 8310-7 EN
Design and principle of operation
3 Design and principle of oper-
ation
The Type3271 Pneumatic Actuators with
1400-120cm², 2800cm² and 2x 2800cm²
actuator areas contain a rolling diaphragm
(A4) and internal springs (A10). They are
mounted on SAMSON Series240, 250,
280 and 290 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) connect
the actuator stem (A7) with the plug stem of
the valve.
Actuators with 1400-120cm² actuator area
are tted with an anti-rotation xture (A88).
The tandem actuator contains two coupled
diaphragms (A4). The single pressure pro-
duces a thrust at the two diaphragms that is
twice as high as the thrust of a single actua-
tor.
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.
The actuator's direction of action can be re-
versed (see section6.3).
3.2 Signal pressure routing
1400-120cm² and 2800cm²
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.
2x2800cm² (tandem actuator)
In the "actuator stem extends" version, the
signal pressure is routed through both bot-
tom signal pressure connections (S) to the
bottom diaphragm chamber and moves the
actuator stem (A7) upward opposing the
spring force.

EB 8310-7 EN 13
Design and principle of operation
A4 Diaphragm
A7 Actuator stem
A8 Ring nut
A10 Springs
A16 Vent plug
A26 Stem connector clamps
A88 Anti-rotation xture
S Signal pressure connection
Actuator stem re-
tracts (FE)
Actuator stem
extends (FA)
Type 3271, 1400-120cm²
Type3271, 2x2800cm²
(tandem actuator)
Actuator stem re-
tracts (FE)
Actuator stem
extends (FA)
A4
A26
A7
S
A10
A8
A16
A88
S
A4
A16
S
A16
A26
A8
A7
A4
Fig.2: Functional diagrams

14 EB 8310-7 EN
Design and principle of operation
In the "actuator stem retracts" version, the
signal pressure is routed through both top
signal pressure connections (S) to the top di-
aphragm 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.
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 Versions
−Type3271 as single actuator with
1400-120cm² actuator area
−Type3271 as single actuator with
2800cm² actuator area
−Tandem actuator (2 x 2800cm²)
−Version with side-mounted handwheel
The actuators can be combined with a
Type3273 Side-mounted Handwheel
with max. 120mm travel (uT8312).
−Travel stop
The Type3271 Pneumatic Actuator can
be tted with a mechanically adjustable
travel stop. The travel is reduced by up to
50% in both directions of action (stem
extends or retracts).
3.5 Technical data
The nameplate provides information on the
actuator version (see section2.1).
More information is available in Data Sheet
uT8310‑2.
Compliance
The Type3271 Pneumatic Actuator bears the
EAC mark of conformity.
Supply pressure
The maximum permissible supply pressure is
6bar in throttling service. See section6.2
for restrictions in on/off service.
Note

EB 8310-7 EN 15
Design and principle of operation
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).
Accessories
The pneumatic actuators with 1400-120,
2800 and 2x2800cm² actuator area have
a female thread on the top diaphragm case
to allow an eyebolt or swivel hoist 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 hoist is de-
signed for setting a control valve assembly
upright or for lifting the actuator without
valve. The swivel hoist can be ordered (ac-
cessories).
Item no.
Actuator area Eyebolt
(DIN580) Swivel hoist
1400-120cm²
2800cm²
2x2800cm²
8325-1101 8442-1019
See section4.2.2 for detailed information on
how to lift the actuator.

16 EB 8310-7 EN
Design and principle of operation
Table1: Dimensions in mm and weights in kg
Actuator Type 3271
Actuator area cm² 1400-120 2800 2x2800
Height
H/H'1) 470 585 1085
H4ratedFA 285 315
H4maxFA 288 325
H4maxFE 315 355
H6 85 85
H72) 128 128
Travel limitation H8 500 500
Diameter ØD 534 770
ØD2 40 40
Ød (thread) M100x2 M100x2
Air connection a G1/1NPT G1/1NPT
Weight
Without handwheel 175 450 950
1) In versions in which the lifting eyelet is welded directly onto the housing or the design does not allow
for a horizontal connecting surface on the housing, H' and H are identical.
2) Height of eyebolt according to DIN580. Height of the swivel hoist may differ.

EB 8310-7 EN 17
Design and principle of operation
Dimensional drawings
H7
ØD
Ød
H4
H6
a
a
ØD2
a
a
H/H'
H7
a
H6
H4 H/H'
a
a
a
ØD
Ød
ØD2
Type3271 with 1400-120 and 2800cm²
actuator areas
Type3271 as tandem actuator with
2x2800cm² actuator areas

18 EB 8310-7 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 with the delivery
note.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent
(refer 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
Risk due to suspended loads falling.
Stay clear of suspended or moving loads.
Risk of lifting equipment tipping over and
risk of damage to lifting accessories due to
exceeding 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3.5 for weights.
Risk of actuator damage due to incorrectly
attached slings.
−The eyebolt or swivel hoist on the top dia‑
phragm case is intended for mounting 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 hoist.
−Do not attach load‑bearing slings to the
handwheel or travel stop.
−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 8310-7 EN 19
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 our after‑sales service for the trans‑
portation temperatures of other valve ver‑
sions.
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 on 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 hoist and the
rigging equipment (hook, shackle etc.)
does not bear any load when lifting con-
trol 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 con-
trol valve, tighten the sling. The slings at-
tached to the valve body must bear the
entire load (see Fig.4).
Lifting the actuator (without valve)
Risk of actuator damage due to incorrectly
attached slings.
The eyebolt or swivel hoist on the top dia‑
phragm case is intended for mounting 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 hoist.
1. Attach a sling to the eyebolt or swivel
hoist of the actuator and to the rigging
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.
Note
NOTICE
!

20 EB 8310-7 EN
Measures for preparation
3. Move the actuator at an even pace to the
mounting site.
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 hoist can be screwed into the fe-
male thread on the top diaphragm case (see
section3.5 on Accessories). The swivel hoist
is designed for setting a control valve assem-
bly upright.
ÎSee associated valve documentation for
instructions on how to lift a control valve.
Tip