Samson 3271 Service manual

Translation of original instructions
EB 8310-2 EN
Edition August 2020
Type 3271 Pneumatic Actuator
Actuator area: 1000cm²
Type 3271 Pneumatic Actuator

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. The images shown in
these instructions are for illustration purposes only. The actual product may vary.
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
([e-mail]).
Documents relating to the device, such as the mounting and operating
instructions, are available on our website at www.samsongroup.com >
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
EB 8310-2 EN

Contents
EB 8310-2 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-3
1.2 Notes on possible personal injury ................................................................1-4
1.3 Notes on possible property damage.............................................................1-5
1.4 Warnings on the device...............................................................................1-6
2 Markings on the device ..............................................................................2-1
2.1 Actuator nameplate.....................................................................................2-1
3 Design and principle of operation ...............................................................3-1
3.1 Direction of action.......................................................................................3-2
3.2 Signal pressure routing................................................................................3-2
3.3 Fail-safe action ...........................................................................................3-2
3.3.1 Actuator stem extends .................................................................................3-2
3.3.2 Actuator stem retracts..................................................................................3-3
3.4 Versions .....................................................................................................3-3
3.5 Accessories ................................................................................................3-3
3.6 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.............................................................................4-2
4.3.2 Lifting the actuator ......................................................................................4-2
4.4 Storing the actuator.....................................................................................4-4
5 Installation.................................................................................................5-1
5.1 Preparation for installation...........................................................................5-1
5.2 Installing the device.....................................................................................5-1
5.2.1 Mounting the actuator onto the valve............................................................5-2
5.2.2 Pneumatic connection..................................................................................5-6
6 Start-up .....................................................................................................6-1
6.1 Spring compression.....................................................................................6-2
6.1.1 Tensioning the springs .................................................................................6-2
6.1.2 Increasing the actuator thrust .......................................................................6-3
6.1.3 Adapting the travel range............................................................................6-3
6.2 Adjusting the travel stop ..............................................................................6-3
6.2.1 Bottom travel stop (minimum travel) ..............................................................6-4
6.2.2 Top travel stop (maximum travel) ..................................................................6-4
6.3 Version with handwheel...............................................................................6-4

Contents
EB 8310-2 EN
7 Operation..................................................................................................7-1
7.1 Throttling service.........................................................................................7-1
7.2 On/off service............................................................................................7-1
7.3 Manual mode (versions with handwheel only) ...............................................7-2
7.4 Additional notes concerning operation .........................................................7-2
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.2 Emergency action .......................................................................................8-2
9 Servicing and conversion............................................................................9-1
9.1 Periodic inspection and testing .....................................................................9-2
9.2 Preparation for servicing or conversion work.................................................9-2
9.3 Mounting the actuator on the valve after servicing or conversion work ............9-3
9.4 Service work...............................................................................................9-3
9.4.1 Replacing the diaphragm ............................................................................9-3
9.4.2 Replacing the actuator stem seals .................................................................9-6
9.5 Conversion work.........................................................................................9-7
9.5.1 Reversing the direction of action (fail-safe action) ..........................................9-8
9.6 Ordering spare parts and operating supplies ..............................................9-10
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
11.1 Removing the actuator from the valve .........................................................11-2
11.2 Relieving the spring compression in the actuator..........................................11-2
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Certicates...............................................................................................14-1
15 Annex......................................................................................................15-1
15.1 Tightening torques, lubricants and tools ......................................................15-1
15.2 Spare parts ..............................................................................................15-1
15.3 After-sales service.....................................................................................15-3

EB 8310-2 EN 1-1
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
combination 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 service. 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
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 by the technical data
− Use outside the limits dened by the accessories connected to 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
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 must be observed.
According 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 applicable standards.

1-2 EB 8310-2 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 and safety footwear when mounting or removing the actuator
− Eye protection and hearing protection while the actuator is operating.
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.
Furthermore, the product may no longer meet the requirements for its intended use.
Safety features
The Type3271 Actuator does not have any special safety features.
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
energy or moving parts by taking appropriate precautions. Plant operators and operating
personnel must observe all hazard statements, warning and caution notes in these mounting
and operating instructions.
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions as well as the
referenced documents to the operating personnel and to instruct them in proper operation.
Furthermore, operators must ensure that operating personnel or third parties 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 referenced documents and observe the specied hazard statements, warnings
and caution notes. Furthermore, operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.

EB 8310-2 EN 1-3
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
Directive 2014/34/EU.
ÎFor connection to the equipotential bonding system, observe the requirements specied in
section6.4 of EN60079-14 (VDE0165-1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Mounting and operating instructions for the valve on which the actuator is mounted
− 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
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 affected
and the actuator.

1-4 EB 8310-2 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 touch the actuator stem or insert hands or nger into the yoke or beneath the
actuator stem while the air supply is connected to the actuator.
ÎWhile working on the actuator, disconnect and lock the air supply as well as the
control signal.
ÎDo not impede the movement of the actuator stem by inserting objects into the yoke.
ÎBefore unblocking the actuator stem after it has become blocked (e.g. due to seizing
up after remaining in the same position for a long time), release any stored energy
in the actuator (e.g. spring compression). See 'Relieving the spring compression in
the actuator' in the 'Removal' section.
Risk of personal injury when the actuator vents.
The actuator is operated with air. As a result, air is vented during operation.
ÎInstall the control valve in such a way that vent holes are not located at eye level and
the actuator does not vent at eye level in the work position 1).
ÎUse suitable silencers and vent plugs.
ÎWear eye and hearing protection when working near the actuator.
Risk of personal injury due to preloaded springs.
Actuators with preloaded springs are under tension. These actuators can be identied
by several longer bolts with nuts protruding from the bottom diaphragm case. These
bolts allow the spring compression to be relieved evenly on disassembling the actuator.
Actuators with considerably preloaded springs are also labeled correspondingly (see
the 'Markings on the device' section).
ÎBefore starting any work on the actuator, relieve the compression from the preload-
ed springs. See 'Relieving the spring compression in the actuator' in the 'Removal'
section.
1) If not described otherwise in the valve documentation, the work position for the control valve is the
front view looking onto the operating controls (including valve accessories).

EB 8310-2 EN 1-5
Safety instructions and measures
WARNING
!
Risk of personal injury through incorrect operation, use or installation as a result of
information on the actuator being illegible.
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 instructions not followed. There is a risk of personal injury.
ÎKeep all relevant markings and inscriptions on the device in a constantly legible
state.
ÎImmediately renew damaged, missing or incorrect nameplates or labels.
1.3 Notes on possible property damage
NOTICE
!
Risk of actuator damage due to incorrectly attached slings.
ÎDo not attach load-bearing slings to the handwheel or travel stop.
Risk of actuator damage due to excessively high or low tightening torques.
Observe the specied torques when tightening actuator components. Excessive tighten-
ing torques lead to parts wearing out more quickly. 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 surfaces.
ÎOnly use lubricants approved by SAMSON (uAB0100).

1-6 EB 8310-2 EN
Safety instructions and measures
1.4 Warnings on the device
Warning Meaning of the warning Location on the device
Warning against the incorrect use of the lifting
eyelet/eyebolt or swivel hoist on SAMSON actua-
tors.
Only attach load-bearing slings to them to verti-
cally lift the actuator on its own (without the valve).
The lifting eyelet/eyebolt and the swivel hoist must
not be used to vertically lift the entire control valve
assembly.
Warning to indicate that the springs in the actua-
tor are preloaded.
Actuators with preloaded springs are under
tension. Incorrect opening of the actuator can lead
to personal injury through the sudden and
uncontrolled projection of parts.
Before starting any work on the actuator, relieve
the compression from the preloaded springs. See
'Relieving the spring compression in the actuator'
in the 'Removal' section.

EB 8310-2 EN 2-1
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:
1Type number
2Country of origin
3Material conguration number
4 Serial number
5Actuator area
6 Bench range in bar
7Bench range in psi
8Operating travel in mm
9 Operating range in bar
10 Operating range in psi
11 Permissible supply pressure pmax in bar
12 Permissible supply pressure pmax in psi
13 Symbol indicating fail-safe action
Actuator stem extends (FA)
Actuator stem retracts (FE)
Manual override
14 Diaphragm material
15 Connecting thread
16 Date of manufacture
17 Data Matrix code
1
14
15
8
52
6
7
9
10
11/12
13
16
3
4
17
Mat:
S/N:
Fig.2-1: Nameplate of Type3271 Actuator

2-2 EB 8310-2 EN

EB 8310-2 EN 3-1
Design and principle of operation
3 Design and principle of operation
The SAMSON Type3271 Actuator with
1000cm² actuator area is mounted onto
globe valves.
The actuator mainly consists of two dia-
phragm cases (A1, A2), the diaphragm (A4)
with diaphragm plate (A5) and springs
(A10) (see Fig.3-1).
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.
Several springs may be tted into one anoth-
er.
The stem connector clamps (A26/27) con-
nect the actuator stem (A7) with the plug
stem of the globe valve.
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
S Signal pressure
connection
Actuator stem extends Actuator stem retracts
A16
A10
A8
A7
S
A2
A4
A26/27
A5
A1
Fig.3-1: Type 3271 Pneumatic Actuator

3-2 EB 8310-2 EN
Design and principle of operation
3.1 Direction of action
The direction of action is determined by how
the springs (A10) and diaphragm plate (A5)
are arranged in the actuator.
With direction of action "actuator stem ex-
tends", the compressed air is applied to the
signal pressure connection on the bottom di-
aphragm case.
With direction of action "actuator stem re-
tracts", the compressed air is applied to the
signal pressure connection on the top dia-
phragm case.
The direction of action can be reversed (see
the 'Service and conversion work' section).
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
(see Fig.3-1, left).
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 (see Fig.3-1, right).
3.3 Fail-safe action
The listed fail-safe actions apply to
SAMSON globe valves.
When the signal pressure is reduced or the
control signal fails, the fail-safe position of
the control valve depends on whether the
springs are installed in the top or bottom
diaphragm chamber.
Versionwithhandwheel: in the active man-
ual mode (the handwheel is not in the neu-
tral position), the valve is not moved to the
fail-safe position even upon failure of the
supply air.
3.3.1 Actuator stem extends
When the signal pressure is reduced or the
control signal fails, the springs move the
actuator stem downward and close the globe
valve. The valve opens when the signal
pressure is increased enough to overcome
the spring force.
Note

EB 8310-2 EN 3-3
Design and principle of operation
3.3.2 Actuator stem retracts
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 Pneumatic Actuator with
1000cm²:
− Standard version
The top and bottom diaphragm cases are
made of painted sheet steel.
− Travel stop
The actuator as a special version 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).
− Side-mounted handwheel
The actuator can be combined with a
Type3273 Side-mounted Handwheel
with max. 60mm travel (uT8312).
3.5 Accessories
Swivel hoist
The pneumatic actuators with 1000cm² ac-
tuator area have a female thread on the top
diaphragm case to allow an eyebolt or swiv-
el 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 designed for setting a control valve
assembly upright or for lifting the actuator
without valve. The swivel hoist can be or-
dered (accessories).
Actuator area
Item no.
Eyebolt
(DIN580) Swivel hoist
1000cm² 8322-0135 8442-1018
Vent plugs
Vent plugs are screwed into the exhaust air
ports of pneumatic and electropneumatic de-
vices. They ensure that any exhaust air that
forms can be vented to the atmosphere (to
avoid excess pressure in the device). Further-
more, the vent plugs allow air intake to pre-
vent a vacuum from forming in the device.
uAB07
Feedback connection (travel pick-off inter-
face)accordingtoIEC60534-6-1
Various valve accessories according to
IEC60534-6-1 and NAMUR recommenda-
tion can be mounted on SAMSON control
valves designed according to the modular
principle. See associated valve documenta-
tion. The travel pick-off interface for these
mounted devices is included in the scope of
delivery of the SAMSON Type3271 Actua-
tor with 1000cm² actuator area.
3.6 Technical data
The nameplate provides information on the
actuator version (see the 'Markings on the
device' section).

3-4 EB 8310-2 EN
Design and principle of operation
More information is available in Data Sheet
uT8310-2.
Temperature range
The permissible temperature range depends
on the diaphragm material (NBR) and is be-
tween –35 and +90°C (–31 and +194°F)
for throttling service. In on/off service, the
lowest temperature restricted to –20°C
(–4°F).
Supply pressure
The maximum permissible supply pressure is
6bar in throttling service. See the 'Opera-
tion' section for restrictions in on/off service.
Note
Table3-1: Dimensions in mm and weights in kg
Actuator Type 3271
Actuator area cm² 1000
Height
H1) 313
H' 267
Ha 19
H4ratedFA 165
H4maxFA 169
H4maxFE 185
H6 54
H72) 90
Travel limitation H8 220
Diameter ØD 462
ØD2 22
Ød (thread) M60x1.5
Air connection a G¾/¾NPT
Weight 80
1) In versions with the lifting eyelet welded directly onto the housing or the design does not allow for a
horizontal connecting surface on the housing, H' and H are identical. The value H' applies in this
case.
2) Height of eyebolt according to DIN580. Height of the swivel hoist may differ.

EB 8310-2 EN 3-5
Design and principle of operation
Dimensional drawings
a
a
H' H8
H6
H4
ØD
ØD2
Ød
H
Ha
H4
a
H
H'
H7
H6
ØD2
Ød
ØD
a
Ha
Standard version of Type3271 Type3271 with travel stop

3-6 EB 8310-2 EN

EB 8310-2 EN 4-1
Shipment and on-site transport
4 Shipment and on-site trans-
port
The work described in this section is only to
be performed by personnel appropriately
qualied to carry out such tasks.
4.1 Accepting the delivered
goods
After receiving the shipment, proceed as fol-
lows:
1. Check the scope of delivery. Check that
the specications on the actuator
nameplate match the specications in the
delivery note. See the 'Markings on the
device' section for nameplate details.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent
(refer to delivery note).
3. Determine 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 documents and the 'Tech-
nical data' section.
4.2 Removing the packaging
from the actuator
Observe the following sequence:
ÎDo not open or remove the packaging
until immediately before mounting the
actuator.
ÎLeave the actuator in its transport con-
tainer or on the pallet to transport it on
site.
ÎDispose and recycle the packaging in
accordance with the local regulations.
4.3 Transporting and lifting the
actuator
Danger due to suspended loads falling.
ÎStay clear of suspended or moving
loads.
ÎClose off and secure the transport paths.
Risk of lifting equipment tipping over and
risk of damage to lifting accessories due to
exceeding the rated lifting capacity.
ÎOnly use approved lifting equipment and
accessories whose minimum lifting
capacity is higher than the weight of the
actuator (including the packaging, if
applicable).
Risk of actuator damage due to incorrectly
attached slings.
The lifting eyelet/eyebolt or swivel hoist on
the top diaphragm case is only intended for
mounting and removing the actuator as well
as lifting the actuator without the valve. The
lifting eyelet/eyebolt and the swivel hoist
must not be used to vertically lift the entire
control valve assembly.
DANGER
!
WARNING
!
NOTICE
!

4-2 EB 8310-2 EN
Shipment and on-site transport
ÎDo not attach load-bearing slings to the
travel stop.
ÎObserve lifting instructions (see sec-
tion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 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.
− Observe permissible temperatures (see
'Technical data' in the 'Design and prin-
ciple of operation' section).
4.3.2 Lifting the actuator
To mount large actuators onto the valve, use
lifting equipment (e.g. crane or forklift) to lift
it.
Lifting instructions
− Use a hook with safety latch (see
Fig.4-5) to secure the slings from slip-
ping off the hook during lifting and
transporting.
− Secure slings on the object to be trans-
ported 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.
a) Lifting the actuator (without
valve)
1. Open the eyebolt cover by lightly press-
ing the side clips (see Fig.4-3 and
Fig.4-4).
2. Attach a sling to the lifting eyelet/eyebolt
or swivel hoist of the actuator and to the
rigging equipment (e.g. hook) of the
crane or forklift (see Fig.4-5).
3. Carefully lift the actuator. Check whether
the lifting equipment and accessories can
bear the weight.
Tip