Samson 3271-5 Service manual

Translation of original instructions
EB 8310-1 EN
Type3271-5 and Type3277-5 Pneumatic Actuators (120cm²)
Type 3271 Pneumatic Actuator Type 3277 Pneumatic Actuator
Edition October 2019

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 8310-1 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. 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]).
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.samsongroup.com > Service & Support > Downloads >
Documentation.

Contents
EB 8310-1 EN 3
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
2 Markings on the device ..............................................................................2-1
2.1 Actuator nameplate.....................................................................................2-1
2.2 Label indicating actuator with preloaded springs...........................................2-2
3 Design and principle of operation ...............................................................3-1
3.1 Direction of action and signal pressure routing ..............................................3-3
3.2 Fail-safe action ...........................................................................................3-3
3.2.1 Version with direction of action "actuator stem extends".................................3-3
3.2.2 Version with direction of action "actuator stem retracts" .................................3-4
3.3 Accessories ................................................................................................3-4
3.4 Versions .....................................................................................................3-5
3.5 Technical data ............................................................................................3-5
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.....................................................................................4-2
5 Mounting and assembly .............................................................................5-1
5.1 Preparation for mounting.............................................................................5-1
5.2 Mounting the device....................................................................................5-1
5.2.1 Mounting the actuator onto the valve............................................................5-2
5.2.2 Connecting the air supply............................................................................5-5
6 Start-up .....................................................................................................6-1
6.1 Adapting the travel range............................................................................6-2
6.2 Travel stop..................................................................................................6-3
6.2.1 Bottom travel stop (minimum travel) ..............................................................6-3
6.2.2 Top travel stop (maximum travel) ..................................................................6-3
6.3 Version with handwheel...............................................................................6-3
6.3.1 Extending the actuator stem manually...........................................................6-4
6.3.2 Retracting the actuator stem manually...........................................................6-4

Contents
4 EB 8310-1 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 Service and conversion work ......................................................................9-1
9.1 Periodic 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) ..........................................9-7
9.6 Determiningdimensiona.............................................................................9-9
9.7 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..........................................11-4
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.....................................................................................15-4

EB 8310-1 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
TheSAMSONType3271andType3277Actuatorsare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 throt-
tling 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 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.

1-2 EB 8310-1 EN
Safety instructions and measures
Personal protective equipment
We recommend wearing the following personal protective equipment when handling the
Type3271andType3277PneumaticActuators:
−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.Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety devices
TheType3271andType3277Actuators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
energy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
referenced 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 ex-
posed 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, the operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.

EB 8310-1 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 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
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 8310-1 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 pneumatic 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 8310-1 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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).

1-6 EB 8310-1 EN

EB 8310-1 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:
1 Type number
2 Model
3CongurationID
4 Serial number
5 Actuator area
6 Bench range in bar
7 Bench range in psi
8 Operating 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)
14 Manual override
15 Special marking
16 Date of manufacture
17 Data Matrix code
8
5
14
15 13 7
6
9
10
11/ 12
SAMSON
Pneumatic actuator
See technical data for ambient temperature
Model
Var.-ID
Air supply max.
SAMSON AG D-60314 Frankfurt
Serial no.
43
16
Made in Germany
17
2
1
Fig.2-1: Nameplate of Type3271 Actuator

2-2 EB 8310-1 EN
Markings on the device
2.2 Label indicating actuator
with preloaded springs
A label on the actuator indicates that the ac-
tuator springs are preloaded in the delivered
state(seeFig.2-2).
ACHTUNG !
VORGESPANNTER
ANTRIEB
ATTENTION !
PRE-LOADED
ACTUATOR
ATTENTION !
SERVO-MOTEUR
PRECONTRAINT
Fig.2-2: Adhesive label indicating preloaded actuator springs in the delivered state

EB 8310-1 EN 3-1
Design and principle of operation
3 Design and principle of operation
TheType3271-5andType3277-5Actua-
torshaveanactuatorareaof120cm².The
actuators mainly consist of two diaphragm
cases (A1, A2), a rolling diaphragm (A4)
andinternalsprings(A10).SeeFig.3-1and
Fig.3-2.Theactuatorsaremountedinpar-
ticularonSAMSONSeries240Valvesand
Type3510Micro-ow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, taking into account
the rated travel. The travel is proportional to
the signal pressure pst. The direction of ac-
tion 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) of Se-
ries240Valvesconnecttheactuatorstem
(A7) with the plug stem of the valve. The ac-
tuator stem (A7) and plug stem (5) of the mi-
cro-owvalveareconnectedusingathread-
ed stem connection.
TheType3277-5Actuatoristtedwithan
additional yoke on the bottom diaphragm
case(seeFig.3-2).Itallowsthedirectat-
tachment of a positioner and/or limit switch.
Thebenetofthisdesignisthatthetravel
pick-off located inside the yoke is protected
againstexternalinuences.
A4
S
A5.1
A5.2
A26/27
A8
A41
A42
A40
A16
A1
A7
A15 A9 A10 A20/21
A2 A133
Fig.3-1: Type3271-5 Actuator with
120cm² actuator area

3-2 EB 8310-1 EN
Design and principle of operation
A2.1
A133
A1
A5.2
A2.1
A41
A8
A4
A26/27
A42
A40
A2
A10
A15
A7
A9
A20/21
A5.1
A27.3
A27.1
Versionformicro-owvalve
Fig.3-2: Type3277-5 Actuator with 120cm² actuator area
Legend for Fig.3-1 and Fig.3-2
A1 Top diaphragm case
A2 Bottom diaphragm case
A2.1 Switchover/connecting
plate for signal pressure
routing
A2.2 Connection for actuator
stem extends (FA)
A2.3 Connection for actuator
stem retracts (FE)
A4 Diaphragm
A5.1 Diaphragm plate
A5.2 Diaphragm plate
A7 Actuator stem
A8 Ring nut
A9 Hexnut
A10 Spring
A15 Collar nut
A16 Vent plug
A20 Hexbolt
A21 Hexnut
A26/27Stem connector clamps
A27.1 Stem connector nut
A27.3 Lock nut
A40 Radial shaft seal
A41 Wiper ring
A42 Dry bearing
A133 Stop bushing
S Signal pressure
connection

EB 8310-1 EN 3-3
Design and principle of operation
3.1 Direction of action and
signal pressure routing
Type3271-5 (see Fig.3-1)
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.
Type3277-5 (see Fig.3-2 and Fig.3-3)
IntheType3277-5Actuator,thesignalpres-
sure is transmitted to the diaphragm cham-
ber through the holes on the left or right side
of the yoke and over a switchover plate
(A2.1,accessories,seeFig.3-3).Thefail-
safe action of the actuator ("actuator stem
extends" or "actuator stem retracts") deter-
mines how the switchover plate must be
aligned with the marking (A2.5).
If the actuator is operated without a position-
er, a connecting plate (A2.1, accessories,
seeFig.3-3)isrequiredinsteadoftheswi-
tchover plate. In this case, the signal pres-
sure is routed directly over the signal pres-
sure connection (A2.9) of the connecting
plate to the diaphragm chamber.
Reversal of the direction of action
ThedirectionofactionforbothType3271
andType3277canbereversed(seethe
'Service and conversion work' section).
3.2 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 di-
aphragm 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.
3.2.1 Version with direction of
action "actuator stem
extends"
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.
Note

3-4 EB 8310-1 EN
Design and principle of operation
3.2.2 Version with direction of
action "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.
3.3 Accessories
Switchover plate/connecting plate
Switchover plates and connecting plates are
listed as accessories.
With
index Order no.
Switchover
plate
New .01 1400-6822
Old .00 1400-6819
Connecting
plate
New .01 1400-6823
G thread .00 1400-6820
NPT thread .00 1400-6821
A2.4
A2.5
A2.9
A2.4
A2.5
A2.6
A2.7
A2.8
A2.4 Symbol
A2.5 Marking for signal pressure input
A2.6 With left attachment
A2.7 With right attachment
A2.8 Sealwithlter
A2.9 Signal pressure connection
Actuator stem extends
Left
attachment
Right
attachment
Actuator stem
extends retracts
Switchover plate Connecting plate
Actuator stem retracts
Left
attachment
Right
attachment
Fig.3-3: Switchover plate and connecting plate in Type3277-5

EB 8310-1 EN 3-5
Design and principle of operation
Actuators with device index .01 are
equipped with new connecting plates. Old
and new connecting plates are not inter-
changeable.
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
Lifting xture
A special lifting tool is available to lift pneu-
maticactuatorswith120cm²actuatorarea
(uAB0100).
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 can be ordered (accesso-
ries):
Type ...
Actua-
tor
Actuator
area in
cm²
Accessories for
Attachment
on one side
(item number)
Attachment
on both sides
(material
number)
3271 120
1400-6816
(included in
scope of
delivery of the
actuator)
100029690
3277 120 1400-6816 100029690
3.4 Versions
−Standard version
The housings of Type 3271-5 and
Type 3277-5 Pneumatic Actuators have
anactuatorareaof120cm²andare
made of die-cast aluminum.
−Version with travel stop
TheType3271-5andType3277-5Actu-
atorscanbettedwithamechanically
adjustable travel stop. The travel is limit-
ed in both directions of action (stem ex-
tends or retracts).
−Version with handwheel
TheType3271-5andType3277-5Actu-
atorscanbettedwithanadditional
handwheel. The handwheel is mounted
on the top diaphragm case and is used
to adjust the travel manually.
3.5 Technical data
The nameplate provides information on the
actuator version (see the 'Markings on the
device' section).
Note

3-6 EB 8310-1 EN
Design and principle of operation
More information is available in Data Sheet
uT8310-1.
Temperature range
The permissible temperature range is deter-
mined by the NBR diaphragm material.
Throttling service: –35to+80°C
–31to+176°F
On/off service: –20to+80°C
–4to+176°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.
Compliance
TheType3271andType3277Pneumatic
Actuators bear the EAC mark of conformity.
Dimensions and weights
See Table 3-1 and dimensional drawings on
page3-7and3-8.
Note
Table 3-1: Dimensions in mm and weights in kg
Actuator Type 3271-5 3277-5
Actuator area cm² 120 120
Height
H' 69 70
H1 205 293
H4ratedFA 75 75
H4maxFA 78 78
H4maxFE 78 78
H5 – 88
H6 34 34
H8 75 75
Diameter ØD 168 168
ØD2 10 10
Thread Ød M30x1.51) M30x1.51)
Air connection a G
1
/
8
(
1
/
8
NPT) –
Weight
Without handwheel 2.5 3.2
With handwheel 4 4.5
1) Inversionformicro-owvalve:M20x1.5thread

EB 8310-1 EN 3-7
Design and principle of operation
Dimensional drawings
Type3277-5
H'H5
H6
H4
ØD
ØD2
Ød
Type3271-5
H'
H6
H4
ØD
ØD2
Ød

3-8 EB 8310-1 EN
Design and principle of operation
Dimensional drawings
H'
H6
H4
ØD
ØD2
Ød
H1
H'H5
H6
H4
ØD
ØD2
Ød
H8
Type3271-5withhandwheel Type3277-5withtravelstop
H6
max. 58
ØD2
Ød
M14 x 1
H6
max. 58
ØD2
Ød
M14 x 1
10.5
10.5
Versionswith7.5mmtravelforType3510Micro-owValve