Samson 3275A Service manual

Translation of original instructions
EB 8314-1 EN
Edition March 2021
Type3275A Pneumatic Piston Actuator
Actuator area: 314, 380, 490 and 804cm²

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 8314-1 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]).
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.

Contents
EB 8314-1 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-4
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 Fail-safe action ...........................................................................................3-2
3.2 Versions .....................................................................................................3-2
3.3 Accessories ................................................................................................3-3
3.4 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 Mounting the device ....................................................................................5-1
5.2.1 Mounting the actuator onto the valve ............................................................5-2
5.3 Valve accessories ........................................................................................5-2
6 Start-up .....................................................................................................6-1
7 Operation..................................................................................................7-1
7.1 Supply pressure in closed-loop operation ......................................................7-1
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.2 Emergency action .......................................................................................8-1
9 Servicing....................................................................................................9-1
9.1 Periodic testing ...........................................................................................9-2
9.2 Preparing the valve for service work .............................................................9-2
9.3 Mounting the actuator after service work ......................................................9-2
9.4 Service work...............................................................................................9-2
9.4.1 Replacing parts subject to wear ....................................................................9-4

Contents
EB 8314-1 EN
9.5 Leak-testing the actuator ..............................................................................9-4
9.6 Ordering spare parts and operating supplies ................................................9-4
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
11.1 Removing the actuator from the valve .........................................................11-1
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Annex......................................................................................................14-1
14.1 Tightening torques, lubricants and tools ......................................................14-1
14.2 Spare parts ..............................................................................................14-1
14.3 After-sales service .....................................................................................14-3

EB 8314-1 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
The Type3275A Pneumatic Piston Actuator is designed for operating a mounted globe valve.
In combination with the valve, the actuator is used to shut off and control the ow of liquids,
gases or vapors in the pipeline. The actuator is mainly used in combination with PSA valves1)
(e.g. SAMSON Type3241-PSA Valve).
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 spe-
cialized training, their knowledge and experience as well as their knowledge of the applica-
ble standards.
1) PSA (Pressure Swing Adsorption)

1-2 EB 8314-1 EN
Safety instructions and measures
Personal protective equipment
We recommend wearing the following personal protective equipment when handling the
Type3275A 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. Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety features
The Type3275A 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 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 8314-1 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).
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.)
− uAB0100 for tools, tightening torques and lubricant

1-4 EB 8314-1 EN
Safety instructions and measures
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.
1.2 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 nger into the yoke 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.
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 openings are not located at eye level
and the actuator does not vent at eye level in the work position.
ÎUse suitable silencers and vent plugs.
ÎWear eye and hearing protection when working near the actuator.

EB 8314-1 EN 1-5
Safety instructions and measures
WARNING
!
Exposure to hazardous substances poses a serious risk to health.
Certain lubricants and cleaning agents are classied as hazardous substances. These
substances have a special label and a material safety data sheet (MSDS) issued by the
manufacturer.
ÎMake sure that an MSDS is available for any hazardous substance used. If neces-
sary, contact the manufacturer to obtain an MSDS.
ÎInform yourself about the hazardous substances and their correct handling.
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 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 8314-1 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 against the incorrect use of the eyebolt
on the actuator housing.
Only attach load-bearing slings to them to verti-
cally lift the actuator on its own (without the valve).
The eyebolt must not be used to vertically lift the
entire control valve assembly.

EB 8314-1 EN 2-1
Markings on the device
2 Markings on the device
2.1 Actuator nameplate
The nameplate is attached to the base. It in-
cludes all details required to identify the de-
vice:
1Data Matrix code
2Serial number
3Material number
4Date of manufacture (month and year)
5Actuator area
6 Connecting thread
7Rated travel in mm
8Country of origin
9Permissible ambient temperature
10 Max. permissible pressure pmax in bar
and psi
Name-
plate
Base
3275A
Mat: pmax
S/N: 10
8
9
7
6
6
5
4
2
3
1
Fig.2-1: Nameplate of Type3275A Actuator

2-2 EB 8314-1 EN

EB 8314-1 EN 3-1
Design and principle of operation
3 Design and principle of oper-
ation
The double-acting Type3275A Pneumatic
Piston Actuator with 314, 380, 490 and
804cm² actuator areas is mainly mounted
on PSA valves (e.g. Type3241-PSA).
The actuator mainly consists of the cover (4),
base (10) and piston (9). The stem connector
clamps connect the actuator's piston stem (7)
with the plug stem of the globe valve.
The signal pressure pst creates the force
F=pst·A at the piston surface A, which is
opposed by the corresponding counter-
pressure. The piston is pressurized with the
supply air over the two connections (S; G
3
/
8
or G½).
The actuators with 314, 380 and 490cm²
actuator areas are xed to a yoke, which is
designed to accommodate a pneumatic or
electropneumatic positioner. See Fig.3-1.
7
9
6
10
11
4
44
4Cover
6 Cylinder barrel
7Piston stem
9Piston
10 Base
11 Linkage
44 Yoke
Fig.3-1: Type3275A Actuator (314, 380 and 490cm²)

3-2 EB 8314-1 EN
Design and principle of operation
The actuator with 804cm² area does need a
yoke (see Fig.3-2). The valve accessories
are mounted over the NAMUR interface.
Refer to the mounting and operating instruc-
tions of the valve accessories to be mounted
for more details on their attachment and the
accessories required.
3.1 Fail-safe action
The double-acting piston actuator has no
springs.
A dened nal position is not
reached when the signal pressure is reduced
or the air supply fails.
3.2 Versions
Type3275A Pneumatic Piston Actuator with
314, 380, 490 or 804cm² actuator area:
− Standard version
Cover and base are coated with an alu-
minum alloy (3.3547, anodized).
− Version with side-mounted handwheel
The actuator can be combined with a
Type3273 Side-mounted Handwheel
with max. 30mm travel (uT8312).
− Special version with auxiliary spring
The actuator can be tted with an auxil-
iary spring to move the actuator to a de-
ned end position in the depressurized
state (e.g. upon supply air failure).
7
6
9
2
11
1
1Cover
2Base
6 Cylinder barrel
7Piston stem
9Piston
11 Linkage
Fig.3-2: Type3275A Actuator (804cm²)

EB 8314-1 EN 3-3
Design and principle of operation
3.3 Accessories
The pneumatic actuator has a female thread
on the base to allow an eyebolt to be
screwed into it. The eyebolt can be used to
vertically lift the actuator and is included in
the scope of delivery. A swivel hoist with
suitable lifting capacity can be retrotted by
the customer in place the eyebolt. In contrast
to the eyebolt, the swivel hoist may be used
for setting a control valve assembly upright.
However, the eyebolt and the swivel hoist
must not be used to vertically lift the entire
control valve assembly (see the 'Shipment
and on-site transport' section).
3.4 Technical data
The nameplate provides information on the
actuator version (see the 'Markings on the
device' section).
More information is available in Data Sheet
uT8314‑1.
Note
Table 3-1: Technical data
Version Type 3275A
Actuator area cm² 314 380 490 804
Supply
pressure Max. 6bar 6bar 6bar 6bar
Rated travel mm 15 19 30 15 19 30 15 19 30 15 19 30
Max. actuator
travel mm 33 33 33 33
Travel volume cm³ 471 597 942 570 722
1140 735 931 1470 1206 1528 2412
Air connection G
3
/
8
G
3
/
8
G
½
G½
Max. permissible
leakage (t≥0°C) 50cm³/min 50cm³/min 58cm³/min 70cm³/min
Perm. temperature
range for continuous
operation
–60 to +80°C

3-4 EB 8314-1 EN
Design and principle of operation
Table 3-2: Materials
Material conguration Standard (aluminum) Heavy-duty version (steel)
Part Material Material
Cylinder tube 3.3206, anodized 1.0570, N+OX
Bonnet/bottom section 3.3547, anodized 1.0570, N+OX
Piston 3.3547, anodized 1.0570, N+OX
Piston stem 1.4548.4
Connecting rod A2
Yoke/connection nipple 1.0460/1.0038
Ring bolt C15/A2
Piston stem guide PTFE/steel
Piston guide band PTFE
Seals –60 to +80°C VMQ/TT-PU
Table 3-3: Dimensions and weights
Actuator Type 3275A
Actuator area cm² 314 380 490 804
D1 mm 268 288 318 405
H1 (including
eyebolt)
mm 207 207 207 214
H2 mm 102 102 102 –
H3 (stem retracted) mm 60 60 60 85
Weight
(standard version) kg 17 20 23 41
Weight
(heavy-duty
version)
kg 56 62 68 106

EB 8314-1 EN 3-5
Design and principle of operation
Dimensional drawings
H2H3
Ø 16
Ø 30
D1
34
H1
G
G
Ø 22
Ø 60
D1
H3
54
H1
G
G
Type3275A, version with 314, 380 or 490cm² Type3275A, version with 804cm²

3-6 EB 8314-1 EN

EB 8314-1 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 name-
plate match the specications in the de-
livery note. See the 'Markings on the de-
vice' 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 packaging or
transport container or on the pallet to
transport it on site.
ÎDispose and recycle the packaging in ac-
cordance 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 injury due to incorrect lifting without
the use of lifting equipment.
Lifting the actuator without the use of lifting
equipment may lead to injuries (back injury
in particular) depending on the weight of the
actuator.
ÎObserve the occupational health and
safety regulations valid in the country of
use.
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 ca‑
pacity is higher than the weight of the
actuator (including the packaging, if ap‑
plicable).
DANGER
!
WARNING
!
WARNING
!

4-2 EB 8314-1 EN
Shipment and on-site transport
Risk of actuator damage due to incorrectly
attached slings.
The eyebolt on the base is only intended for
mounting and removing the actuator as well
as lifting the actuator without valve. The eye‑
bolt must not be used to vertically lift the en‑
tire control valve assembly.
ÎObserve lifting instructions (see sec‑
tion4.3.2).
Our after‑sales service can provide more de‑
tailed transport and lifting instructions on re‑
quest.
4.3.1 Transporting the actu-
ator
The actuator can be transported using lifting
equipment (e.g. crane or forklift).
ÎLeave the actuator in its packaging or
transport container 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.4-3) 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.4-1 and
Fig.4-2).
2. Attach a sling to the eyebolt of the actua-
tor and to the rigging equipment (e.g.
hook) of the crane or forklift (see
Fig.4-3).
NOTICE
!
Tip