Page 1
Type 3275 Pneumatic Piston Actuator
Actuator area: 314, 490, and 804cm²
Translation of original instructions
Mounting and
Operating Instructions
EB 8314 EN
Edition February 2017
Page 2
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.
Î For the safe and proper use of these instructions, read them carefully and keep them for
later reference.
Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesservice@samson.de).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
(www.samson.de) > Product documentation. You can enter the document
number or type number in the [Find:] eld to look for a document.
Denition of signal words
!
DANGER
Hazardous situations which, if not avoided,
will result in death or serious injury
!
WARNING
Hazardous situations which, if not avoided,
could result in death or serious injury
2 EB 8314 EN
!
NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action
Page 3
Contents
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage ................................................................8
2 Markings on the device .................................................................................9
2.1 Actuator nameplate ........................................................................................9
3 Design and principle of operation ................................................................10
3.1 Fail-safe action ............................................................................................11
3.2 Versions ......................................................................................................12
3.3 Technical data .............................................................................................12
4 Measures for preparation ............................................................................14
4.1 Unpacking ..................................................................................................14
4.2 Transporting and lifting ................................................................................14
4.2.1 Transporting ................................................................................................14
4.2.2 Lifting ..........................................................................................................15
4.3 Storage .......................................................................................................15
4.4 Preparation for installation ............................................................................17
5 Mounting and start-up .................................................................................18
5.1 Mounting the actuator onto the valve .............................................................18
5.2 Additional ttings .........................................................................................20
6 Operation ...................................................................................................21
7 Servicing.....................................................................................................22
7.1 Replacing parts subject to wear .....................................................................22
7.2 Leak-testing the actuator ...............................................................................27
7.3 Preparation for return shipment .....................................................................27
7.4 Ordering spare parts and operating supplies .................................................27
8 Malfunctions ...............................................................................................28
9 Decommissioning and disassembly ..............................................................30
9.1 Decommissioning .........................................................................................30
9.2 Removing the actuator from the valve ............................................................30
9.3 Disposal ......................................................................................................30
EB 8314 EN 3
Page 4
Contents
10 Appendix ....................................................................................................31
10.1 After-sales service ........................................................................................31
4 EB 8314 EN
Page 5
Safety instructions and measures
1 Safety instructions and measures
Intended use
The Type3275 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
(e.g. SAMSON Type3241-PSA Valve).
The actuator is designed to operate under exactly dened conditions (e.g. thrust, travel).
Therefore, operators must ensure that the actuator is only used in applications that meet the
specications used for sizing the actuator at the ordering stage. In case operators intend to
use the actuator in other applications or conditions than specied, SAMSON must be contacted.
SAMSON does not assume any liability for damage resulting from the failure to use the device for its intended purpose or for damage caused by external forces or any other external
factors.
Î Refer 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 dened during sizing and in the technical data
− Use outside the limits dened by the accessories mounted on the actuator
Furthermore, the following activities do not comply with the intended use:
− Use of non-original spare parts
− Performing service and repair work not described in these instructions
Qualications of operating personnel
The actuator must be mounted, started up, serviced, and repaired by fully trained and qualied personnel only; the accepted industry codes and practices are to 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.
EB 8314 EN 5
Page 6
Safety instructions and measures
Personal protective equipment
We recommend wearing the following personal protective equipment when handling the
Type3275 Pneumatic Piston Actuator:
− Protective gloves when mounting or removing the actuator
Î Check with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions, conversions or other modications to 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 devices
The Type3275 Actuator does not have any special safety equipment.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
prevent hazards that could be caused in the actuators by the process medium, the operating
pressure, the signal pressure or by moving parts by taking appropriate precautions. They
must observe all hazard statements, warning and caution notes in these mounting and operating instructions, especially for installation, start-up, and service work.
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions 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 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 hazard statements, warning and caution
notes specied in them. Furthermore, the operating personnel must be familiar with the applicable health, safety and accident prevention regulations and comply with them.
Referenced standards and regulations
According to the ignition risk assessment performed in accordance with EN13463-1:2009,
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.
6 EB 8314 EN
Page 7
Safety instructions and measures
Î For connection to the equipotential bonding system, observe the requirements specied in
section 6.4 of EN60079-14 (VDE0165 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.)
− uAB0100 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 bursting.
Î Before starting any work on the actuator, depressurize all plant sections concerned
and the actuator.
1.2 Notes on possible personal injury
!
WARNING
Crush hazard arising from moving parts.
The actuator contains moving parts (piston rod), which can injure hands or ngers if
inserted into the actuator.
Î Do not insert hands or ngers into the yoke while the valve is in operation.
Î While working on the actuator, disconnect and lock the pneumatic air supply as
well as the control signal.
EB 8314 EN 7
Page 8
Safety instructions and measures
!
WARNING
Risk of personal injury when the actuator vents.
While the valve is operating, the actuator may vent during closed-loop control or when
the valve opens or closes.
Î Install the control valve in such a way that the actuator does not vent at eye level.
Î Use suitable silencers and vent plugs.
Î Wear eye protection when working in close proximity to the control valve.
1.3 Notes on possible property damage
!
NOTICE
Risk of actuator damage due to excessively high or low tightening torques.
Observe the specied torques on tightening actuator components. Excessively tightened
torques lead to parts wearing out quicker. Parts that are not tightened far enough may
loosen.
Î Observe the specied tightening torques (uAB0100).
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 valve surface.
Î Only use lubricants approved by SAMSON (uAB0100).
8 EB 8314 EN
Page 9
Markings on the device
A18
A19
2 Markings on the device
2.1 Actuator nameplate
The nameplate (A18) is attached to the base (A4) with rivets (A19). It includes all details required to identify the device:
1 Actuator area
2 Permissible supply pressure p
3 Operating travel in mm
4 Permissible temperature range
5 Conguration ID
6 Serial number
7 Bar code
8 Date of manufacture (month and year)
in bar or psi
max
SAMSON 3275
Supply
Stroke
Temperature
Var-ID
Fig.1: Nameplate of Type3275 Actuator
2
3
4
5
1
Serial no.
A4 Base
A18 Nameplate
A19 Rivet
7
6
8
8
Made in
Germany
A4
EB 8314 EN 9
Page 10
Design and principle of operation
A1
A2
A7
A8
A9
A3
A10
A5
A5
3 Design and principle of oper-
ation
The double-acting Type3275 Pneumatic
Piston Actuator with 314, 490, and 804cm²
actuator areas is mainly mounted on PSA
valves (e.g. Type3241-PSA).
The actuator mainly consists of the base
(A4), cover (A10), and piston (A9). The stem
connector clamps connect the actuator's piston rod (A1) with the plug stem of the globe
valve.
S
S
Yoke
The signal pressure p
F=p
·A at the piston surface A, which is
st
creates the force
st
opposed by the corresponding counterpressure. The piston is pressurized with the
supply air over the two connections (S, G
or G½).
The actuators with 314 and 490cm²
actuator areas are xed to a yoke, which is
designed to accommodate a pneumatic or
electropneumatic positioner. See Fig.2.
A4
A1 Piston rod
A2 Piston rod seal
A3 Plain bearing
A4 Base
A5 O-ring
A7 Piston seal
A8 Piston guide band
A9 Piston
A10 Cover
S Signal pressure connection
3
/
8
Fig.2: Type3275 Actuator (314 and 490cm²)
10 EB 8314 EN
Page 11
The actuator with 804cm² area does need a
A10
yoke (see Fig.3). The valve accessories are
mounted over the NAMUR interface.
Refer to the mounting and operating instructions 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 dened nal position is not
reached when the signal pressure is reduced
or the air supply fails.
Design and principle of operation
S
A1 Piston rod
A2 Piston rod seal
A9
A8
A7
S
A3
A2
A1
Fig.3: Type3275 Actuator (804cm²)
A3 Plain bearing
A4 Base
A7 Piston seal
A8 Piston guide band
A4
A9 Piston
A10
Cover
S Signal pressure
connection
EB 8314 EN 11
Page 12
Design and principle of operation
3.2 Versions
Type3275 Pneumatic Piston Actuator with
314, 490 or 804cm² actuator area:
3.3 Technical data
The nameplate provide information on the
actuator version (see section2.1).
− Standard version
Base and cover are coated with an aluminum alloy (3.3547, anodized).
− Version with side-mounted handwheel
Note
More information is available in Data Sheet
uT8314.
The actuator can be combined with a
Type3273 Side-mounted Handwheel
with max. 30mm travel (uT8312).
− Special version with auxiliary spring
The actuator can be tted with an auxiliary spring to move the actuator to a dened end position in the depressurized
state (e.g. upon supply air failure).
− Special version for temperatures down
to –40°C
Table1: Technical data
Version Type 3275
Actuator area cm² 314 490 804
Supply pressure Max. 6bar 6bar 6bar
Rated travel mm 15 30 15 30 15 30
Travel volume cm³ 471 942 735 1470 1206 2412
3
/
Air connection G
Max. permissible leakage
(t≥0°C)
Perm. temperature range for
continuous operation
50cm³/min 58cm³/min 70cm³/min
8
G½ G½
–30 to +80°C
Compliance
12 EB 8314 EN
Page 13
Design and principle of operation
Ø30
G
£
Table2: Dimensions in mm and weights in kg
Actuator Type 3275
Actuator area cm² 314 490 804
Rated travel mm 15 30 15 30 15 30
Travel volume cm³ 471 942 735 1470 1206 2412
£
H1 including lifting
eyelet
mm 220 280 350
mm 225
1)
250
1)
286
H2 mm 102 102 –
H3 (rod retracted) mm 60 y60 60
Air connection G
8
G½ G½
3
/
Weight kg 10 17 21
1)
Different dimensions may arise with the special version (e.g. for low temperatures)
Dimensional drawings
G
H1H2H3
Ø16
Ø22
H1
H3
Ø60
Type3275 with 314 and 490cm² actuator areas Type3275 with 804cm² actuator area
EB 8314 EN 13
Page 14
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as
follows:
1. Check the scope of delivery. Compare
the shipment received against the delivery note.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent
(refer to delivery note).
4.1 Unpacking
Note
Do not remove the packaging until immediately before mounting.
Proceed as follows to lift and mount the actu-
ator:
1. Remove the packaging from the actuator.
2. Dispose of the packaging in accordance
with the valid regulations.
− Only use approved lifting equipment and
accessories whose minimum lifting capacity is higher than the weight of the actuator.
− Refer to section3.3 for weights.
!
NOTICE
Risk of actuator damage due to incorrectly
attached slings.
− The lifting eyelets on the cover are intend-
ed for mounting and removing the actuator
as well as lifting the actuator without valve.
Do not lift the entire control valve assembly
using the lifting eyelets.
− Observe lifting instructions (see sec-
tion4.2.2).
Tip
SAMSON's After-sales Service department
can provide more detailed transport and lifting instructions on request.
4.2.1 Transporting
4.2 Transporting and lifting
!
DANGER
Hazard due to suspended loads falling.
Stay clear of suspended or moving loads.
!
WARNING
Risk of lifting equipment tipping and risk of
damage to lifting accessories due to exceeding the rated lifting capacity.
14 EB 8314 EN
The actuator can be transported using lifting
equipment (e.g. crane or forklift).
Î Leave the actuator in its transport con-
tainer or on the pallet to transport it.
Î Observe 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.
Page 15
Measures for preparation
− Protect the actuator against moisture and
dirt.
− Observe permissible temperatures (see
section3.3).
4.2.2 Lifting
To mount a large actuator, use lifting equipment (e.g. crane or forklift) to lift it.
Lifting instructions
− Secure slings against slipping.
− Make sure the slings can be removed
from the actuator once it has been
mounted onto the valve.
− Prevent the actuator from tilting or tip-
ping.
− Do not leave loads suspended when in-
terrupting work for longer periods of
time.
− Make sure that the additional sling be-
tween the lifting eyelet and rigging
equipment (hook, shackle etc.) does not
bear any load when lifting valves. The
sling only protects the control valve from
tilting while being lifted. Before lifting the
control valve, tighten the sling. The slings
attached to the valve body must bear the
entire load (see Fig.4).
not lift the entire control valve assembly using the lifting eyelets.
1. Attach a sling to the lifting eyelets of the
actuator and to the rigging equipment
(e.g. hook) of the crane or forklift (see
Fig.4).
2. Carefully lift the actuator. Check whether
the lifting equipment and accessories can
bear the weight.
3. Move the actuator at an even pace to the
mounting site.
4. Mount the actuator to the valve. See section5.1.
5. Remove slings after mounting.
Tip
We recommend using a hook with safety
latch (see Fig.4). The safety latch prevents
the slings from slipping during lifting and
transporting.
Lifting the entire control valve assembly
Î See associated valve documentation for
instructions on how to lift a control valve.
4.3 Storage
Lifting the actuator (without valve)
!
NOTICE
Risk of actuator damage due to incorrectly
attached slings.
The lifting eyelets on the cover are intended
for mounting and removing the actuator as
well as lifting the actuator without valve. Do
EB 8314 EN 15
!
NOTICE
Risk of actuator damage due to improper
storage.
− Observe storage instructions.
− Avoid long storage times.
− Contact SAMSON in case of different stor-
age conditions or long storage periods.
Page 16
Measures for preparation
Fig.4: Lifting points on the actuator Fig.5: Lifting points on the control valve
(example)
Note
We recommend regularly checking the actuator and the prevailing storage conditions
during long storage times.
− Do not damage the corrosion protection
(paint, surface coatings). Repair any
damage immediately.
− Protect the actuator against moisture and
dirt. Store it at a relative humidity of less
than 75%. In damp spaces, prevent con-
Storage instructions
− When the valve and actuator are al-
ready assembled, observe the storage
conditions for control valves. See associated valve documentation.
− Protect the actuator against external in-
uences (e.g. impact).
densation. If necessary, use a drying
agent or heating.
− Make sure that the ambient air is free of
acids or other corrosive media.
− Observe permissible temperatures (see
section3.3).
− Do not place any objects on the actuator.
16 EB 8314 EN
Page 17
Tip
SAMSON's After-sales Service department
can provide more detailed storage instructions on request.
4.4 Preparation for installation
Proceed as follows:
Î Check the actuator for damage.
Î Check to make sure that the type
designation, material and temperature
range of the actuator match the ambient
conditions (temperatures etc.).
Î Check the pressure gauge installed on
valve accessories to make sure it functions.
Î When the valve and actuator are al-
ready assembled, check the tightening
torques of the bolted joints (uAB0100).
Components may loosen during transport.
Measures for preparation
EB 8314 EN 17
Page 18
Mounting and start-up
5 Mounting and start-up
SAMSON control valves are delivered ready
for use. In special cases, the valve and actuator are delivered separately and must be
assembled on site. The procedure to mount
and start up the actuator are described in
following.
!
NOTICE
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specied torques on tightening
actuator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Observe the specied tightening torques
(uAB0100).
Note
See associated valve documentation for additional mounting instructions.
5.1 Mounting the actuator onto the valve
Proceed as follows if the valve and actuator
have not been assembled by SAMSON:
Note
Remove the mounted actuator before mounting the other actuator (see section9.2).
Tip
The valve and actuator are assembled with
special attention paid to the actuator's bench
range and direction of action. These details
are specied on the actuator nameplate (see
section2.1).
1. Loosen the lock nut (10) and stem connector nut (9) on the valve.
2. Press the plug together with the plug stem
rmly into the seat ring.
3. Thread down the lock nut and stem connector nut.
4. Remove the clamps of the stem connector
(A26/27) and the ring nut (A208) from
the actuator.
5. Slide the ring nut over the plug stem.
6. Place the actuator onto the valve bonnet
(2) and secure it with the ring nut.
7. Apply a signal pressure to the actuator to
extend the piston rod.
8. Screw on the stem connector nut (9) by
hand until it touches the piston rod (A1).
9. Turn the stem connector nut a further
quarter turn and secure this position with
the lock nut (10).
10. Position clamps of the stem connector
(A26/27) and screw them tight.
11. Align the travel indicator (84) with the tip
of the stem connector clamp.
18 EB 8314 EN
Page 19
A1
7
Yoke
A208
A26/2
84
9
10
2
Mounting and start-up
2 Valve bonnet
9 Stem connector nut
10 Lock nut
84 Travel indicator scale
A1 Piston rod
A26/27 Stem connector clamps
A208 Ring nut
Fig.6: Type 3275 Piston Actuator with 490cm² actuator area mounted on a Type3241-PSA Valve
EB 8314 EN 19
Page 20
Mounting and start-up
5.2 Additional ttings
Valve accessories
Valve accessories are either mounted on the
yoke (314 and 490cm²) or over the
NAMUR interface (804cm² only).
Refer to the mounting and operating instructions of the valve accessories to be mounted
for more details on their attachment and the
accessories required.
Auxiliary spring
The actuator can be tted with an auxiliary
spring to move the actuator to a dened end
position in the depressurized state (e.g. upon
supply air failure).
20 EB 8314 EN
Page 21
6 Operation
!
WARNING
Crush hazard arising from moving parts.
The actuator contains moving parts (piston
rod), which can injure hands or ngers if inserted into the actuator.
− Do not insert hands or ngers into the yoke
while the valve is in operation.
− While working on the actuator, disconnect
and lock the pneumatic air supply as well
as the control signal.
!
WARNING
Risk of personal injury when the actuator
vents.
Wear eye protection when working in close
proximity to the control valve.
Operation
!
NOTICE
Operation disturbed by a blocked piston
rod.
Do not impede the movement of the piston
rod by inserting objects into their path.
Supply pressure
The Type3275 Pneumatic Piston Actuator is
designed for a maximum supply pressure of
6bar.
EB 8314 EN 21
Page 22
Servicing
7 Servicing
!
DANGER
Risk of bursting in the actuator.
Actuators are pressurized. Improper opening
can lead to actuator components bursting.
Before starting any work on the actuator, depressurize all plant sections concerned and
the actuator.
!
NOTICE
Risk of actuator damage due to incorrect
service or repair.
− Do not perform any service or repair work
other than the activities described in this
section on your own. Contact SAMSON's
After-sales Service department.
− Service and repair work must only be per-
formed by staff trained for this purpose.
!
NOTICE
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specied torques on tightening
actuator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Observe the specied tightening torques
(uAB0100).
!
NOTICE
Risk of actuator damage due to the use of
unsuitable lubricants.
Only use lubricants approved by SAMSON
(uAB0100).
Note
− The product warranty becomes void if
service or repair work not described in
these instructions is performed without
prior agreement by SAMSON's After-sales
Service department.
− Only use original spare parts by
SAMSON, which comply with the original
specications.
7.1 Replacing parts subject to wear
Parts subject to wear
− Piston rod seal (A2)
− O-ring (A5)
− Damping seal (A21)
− Piston seal (A7)
− Piston guide band (A8)
− For actuator with 314 and 490cm²
only: wiper ring (A241) and dry bearing
(A242). See Fig.8.
1. Lift the actuator off the valve. See sec-
tion9.2.
2. Unscrew collar nuts (A11) on the cylin-
der cover.
3. Pull off the tie rods (A12) towards the
side with the piston rod.
4. Remove the base (A4).
22 EB 8314 EN
Page 23
A1 Piston rod
A21
A1
A2
A7
A8
A9
A3
A10
A12
A11
A6
A5
A5
A2 Piston rod seal
A3 Plain bearing
A4 Base
A5 O-ring
A6 Cylinder barrel
A7 Piston seal
A8 Piston guide band
A4
A9 Piston
A10 Cover
A11 Nut
A12 Tie rod
A21 Damping seal
Fig.7: Type3275 · Version with
314/490cm² (top) and
804cm² (bottom)
Servicing
A10
A5
A6
A9
A8
A7
A5
A3
A2
A1
A12
A4
A11
EB 8314 EN 23
Page 24
Servicing
A242
A241
A208
5. Pull the piston rod (A1) and piston (A9)
from the cylinder barrel (A6).
6. Separate the cylinder barrel (A6) and
cover (A10).
7. Use a suitable tool to remove parts subject to wear. Make sure that the facings
are not damaged.
8. Carefully clean the affected places and
apply a suitable lubricant to them.
9. Apply a suitable lubricant to the parts
subject to wear.
10. Mount the parts subject to wear. Make
sure that the parts and facings are not
damaged. If necessary, use an assembly
tool.
11. Apply a suitable lubricant evenly to the
face in the cylinder barrel (A6) and piston rod (A1).
12. Fill the grease chambers at the piston
seal (A7) and piston rod seal (A2) with a
suitable grease.
13. Center the cylinder barrel (A6) on the
cover (A10).
14. Insert the piston (A9) with piston rod
(A1) into the cylinder barrel (A6). Make
sure that the parts subject to wear are
not damaged.
15. Carefully slide the base (A4) over the
piston rod (A1).
16. Screw the tie rods (A12) from side with
the piston rod with the short thread side
into the collar nuts (A11) on the cylinder
base. Tighten the collar nuts in a crisscross pattern. Observe tightening
torques.
17. Leak-test the actuator (see section7.2).
18. Mount the actuator on the valve (see section5.1).
A1 Piston rod
A1
Fig.8: Piston rod seal in the yoke for actuator with 314 and 490cm² actuator areas
A208 Ring nut
A241 Wiper ring
A242 Dry bearing
24 EB 8314 EN
Page 25
Servicing
A10
A15
A13
A11
A17
A5
A9
A3
A2
A1 Piston rod
A2 Piston rod seal
A3 Plain bearing
A4 Base
A5 O-ring
A6 Cylinder barrel
A7 Piston seal
A8 Piston guide band
A9 Piston
A10 Cover
A11 Nut
A13 Washer
A15 Bolt
A17 Ring nut
A8
A7
Fig.9: Special version down to
–40°C (314cm²)
A6
A4
A1
EB 8314 EN 25
Page 26
Servicing
A10
A15
A11
A17
A13
A3
A2
A1 Piston rod
A2 Piston rod seal
A3 Plain bearing
A4 Base
A5 O-ring
A6 Cylinder barrel
A7 Piston seal
A8 Piston guide band
A9 Piston
A10 Cover
A11 Nut
A13 Washer
A15 Bolt
A17 Ring nut
Fig.10: Special version down to
–40°C (490cm²)
A5
A9
A8
A7
A6
A4
A1
26 EB 8314 EN
Page 27
Servicing
7.2 Leak-testing the actuator
After replacing the parts subject to wear (see
section7.1), the actuator must be tested for
leakage at the following places:
− Connection of base (A4), cover (A10),
and cylinder barrel (A6)
− Piston rod seal (A2)
7.3 Preparation for return shipment
Defective actuators can be returned to
SAMSON for repair.
Proceed as follows to return valves to
SAMSON:
1. Put the control valve out of operation.
See associated valve documentation.
2. Remove the actuator from the valve (see
section9.2).
3. Send the actuator to your nearest
SAMSON subsidiary. SAMSON
subsidiaries are listed on our website at
uwww.samson.de > Contact.
Lubricant
Details on suitable lubricants can be found in
the document uAB0100.
7.4 Ordering spare parts and operating supplies
Contact your nearest SAMSON subsidiary
or the SAMSON After-sales Service department for information on spare parts, lubricants, and tools.
Spare parts
Details on spare parts are available on request.
EB 8314 EN 27
Page 28
Malfunctions
8 Malfunctions
Depending on the operating conditions, check the actuator at certain intervals to prevent
possible failure before it can occur. Operators are responsible for drawing up an inspection
plan.
Troubleshooting
Malfunction Possible reasons Recommended action
Piston rod does not move on
demand.
Piston rod does not stroke
through its complete travel
range.
Actuator is blocked. Check attachment.
Unblock the actuator.
Insufcient signal pressure Check the signal pressure.
Check the signal pressure line for
leakage.
Signal pressure not connected
properly.
Insufcient signal pressure Check the signal pressure.
Valve accessories incorrectly set. Check the actuator without valve
Check the signal pressure
routing. See section3.
Check the signal pressure line for
leakage.
accessories.
Check the settings of the valve
accessories.
28 EB 8314 EN
Page 29
Servicing
EB 8314 EN 29
Page 30
Decommissioning and disassembly
9 Decommissioning and
disassembly
!
DANGER
Risk of bursting in the actuator.
Actuators are pressurized. Improper opening
can lead to actuator components bursting.
Before starting any work on the actuator, depressurize all plant sections concerned and
the actuator.
9.1 Decommissioning
To decommission the actuator for service and
repair work or disassembly, proceed as follows:
1. Put the control valve out of operation.
See associated valve documentation.
2. Disconnect the pneumatic air supply to
depressurize the actuator.
9.2 Removing the actuator
from the valve
7. Fasten the lock nut (10) and stem connector nut (9) on the valve.
9.3 Disposal
Î Observe local, national, and internation-
al refuse regulations.
Î Do not dispose of components, lubri-
cants, and hazardous substances together with your other household waste.
1. Put the control valve out of operation.
See associated valve documentation.
2. Remove external piping.
3. Remove the stem connector clamps
(A26/27).
4. Unscrew the stem connector nut (9) and
lock nut (10) from the valve.
5. Unscrew the ring nut (A8) on the valve
bonnet (2).
6. Remove the ring nut (A8) and actuator
from the valve.
30 EB 8314 EN
Page 31
10 Appendix
10.1 After-sales service
Contact SAMSON's After-sales Service department for support concerning service or
repair work or when malfunctions or defects
arise.
E-mail
You can reach the After-sales Service Department at aftersalesservice@samson.de.
Addresses of SAMSONAG and its subsidiaries
The addresses of SAMSON AG, its subsidiaries, representatives and service facilities
worldwide can be found on the SAMSON
website, in all SAMSON product catalogs or
on the back of these Mounting and Operating Instructions.
Appendix
Required specications
Please submit the following details:
− Order number and position number in
the order
− Type, model number, actuator area, trav-
el, direction of action and bench range
(e.g. 0.2 to 1bar) or the operating
range of the actuator
− Type designation of mounted valve.
− Installation drawing
EB 8314 EN 31
Page 32
SAMSON AG · MESS- UND REGELTECHNIK
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
samson@samson.de · www.samson.de
EB 8314 EN
2017-02-20 · English
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