Samson 3271 Service manual

Translation of original instructions
EB 8310-4 EN
Edition November 2022
Types3271 and 3277 Pneumatic Actuators
Actuator area: 355v2cm²
Type 3277 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 8310-4 EN

Contents
EB 8310-4 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 Type3271..................................................................................................3-1
3.2 Type3277..................................................................................................3-2
3.3 Direction of action.......................................................................................3-3
3.4 Signal pressure routing................................................................................3-3
3.4.1 Type3271..................................................................................................3-3
3.4.2 Type3277..................................................................................................3-3
3.5 Fail-safe action ...........................................................................................3-3
3.5.1 Actuator stem extends .................................................................................3-4
3.5.2 Actuator stem retracts..................................................................................3-4
3.6 Versions .....................................................................................................3-4
3.7 Accessories ................................................................................................3-4
3.8 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 Installation.................................................................................................5-1
5.1 Preparation for installation...........................................................................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............................................................................5-6
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

Contents
EB 8310-4 EN
6.2 Travel stop..................................................................................................6-4
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...............................................................................6-5
6.3.1 Extending the actuator stem manually...........................................................6-5
6.3.2 Retracting the actuator stem manually...........................................................6-5
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 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 .................................................................9-5
9.5 Conversion work.........................................................................................9-6
9.5.1 Reversing the direction of action (fail-safe action) ..........................................9-6
9.6 Ordering spare parts and operating supplies ................................................9-9
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.....................................................................................15-4
15.4 Information on the UK sales region.............................................................15-4

EB 8310-4 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 actuators are used to shut off the ow of liq-
uids, gases or vapors in the pipeline. Depending on the version, the actuators are suitable
for throttling or on/off service. The actuators can be used in processing and industrial plants.
The actuators are designed to operate under exactly dened conditions (e.g. thrust, travel).
Therefore, operators must ensure that the actuators are only used in operating conditions that
meet the specications used for sizing the actuators at the ordering stage. In case operators
intend to use the actuators 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 8310-4 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. 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. Opera-
tors are obliged to provide these mounting and operating instructions as well as the refer-
enced documents to the operating personnel and to instruct them in proper operation. Fur-
thermore, 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 8310-4 EN 1-3
Safety instructions and measures
Referenced standards, directives and regulations
According to the ignition risk assessment performed in accordance with Clause5.2 of
ISO80079-36, 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
Clause6.4 of EN60079-14 (VDE0165-1).
The Type3271 and Type3277 Actuators are partly completed machinery as dened in the
Machinery Directive 2006/42/EC or the Directive 2008 No. 1597 Supply of Machinery
(Safety) Regulations 2008.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Mounting and operating instructions for the valve on which it 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 8310-4 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 8310-4 EN 1-5
Safety instructions and measures
WARNING
!
Damage to health relating to the REACH regulation.
If a SAMSON device contains a substance which is listed as being a substance of very
high concern on the candidate list of the REACH regulation, this circumstance is indicat-
ed on the SAMSON delivery note.
ÎInformation on safe use of the part affected, see
uwww.samsongroup.com > About SAMSON > Material Compliance > REACH.
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).

1-6 EB 8310-4 EN
Safety instructions and measures
NOTICE
!
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).
1.4 Warnings on the device
Warning Meaning of the warning Location on the device
Warning to indicate that the springs in the
actuator 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.