Samson 3371 Series Mounting And Operating Instructions
Type3371 Pneumatic Actuator
Actuator area: 120 and 350cm²
Translation of original instructions
Type3371 with 120cm² actuator area Type3371 with 350cm² actuator area
Mounting and
Operating Instructions
EB 8317 EN
Edition November 2016
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 8317 EN
!
NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action
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 ...............................................................................10
2.1 Actuator nameplate ......................................................................................10
3 Design and principle of operation ................................................................12
3.1 Direction of action ........................................................................................12
3.2 Signal pressure routing .................................................................................12
3.3 Fail-safe action ............................................................................................15
3.3.1 Version with direction of action "actuator stem extends" (FA) ...........................15
3.3.2 Version with direction of action "actuator stem retracts" (FE) ............................15
3.4 Mounting types ............................................................................................15
3.5 Versions ......................................................................................................17
3.6 Technical data .............................................................................................17
4 Measures for preparation ............................................................................19
4.1 Unpacking ..................................................................................................19
4.2 Transporting and lifting ................................................................................19
4.2.1 Transporting ................................................................................................19
4.2.2 Lifting ..........................................................................................................19
4.3 Storage .......................................................................................................19
4.4 Preparation for installation ............................................................................21
5 Mounting and start-up .................................................................................22
5.1 Mounting the actuator onto the valve .............................................................22
5.1.1 120cm² version ..........................................................................................24
5.1.2 350cm² version ..........................................................................................26
5.2 Changing the mounting type .........................................................................27
5.2.1 Changing the mounting type to mounting using rods (FormB to FormC) ..........27
5.2.2 Changing the mounting type to mounting using a crossbeam
(FormC to FormB) .......................................................................................28
5.3 Preloading the springs ..................................................................................28
EB 8317 EN 3
Contents
5.3.1 Increasing the actuator thrust ........................................................................29
5.3.2 Adapting the travel range .............................................................................29
5.4 Additional ttings .........................................................................................30
6 Operation ...................................................................................................31
6.1 On/off service .............................................................................................31
6.2 Reversal of the direction of action ..................................................................31
6.2.1 120cm² version ..........................................................................................32
6.2.2 350cm² version ..........................................................................................34
6.3 Version with travel stop .................................................................................36
6.3.1 Bottom travel stop (minimum travel) ...............................................................36
6.3.2 Top travel stop (maximum travel) ...................................................................37
6.4 Version with handwheel ................................................................................37
6.4.1 Operating the handwheel of version with "stem extends" direction of action .....37
6.4.2 Operating the handwheel of version with "stem retracts" direction of action ......37
7 Servicing.....................................................................................................38
7.1 Replacing the diaphragm .............................................................................39
7.1.1 120cm² version ..........................................................................................39
7.1.2 350cm² version ..........................................................................................41
7.2 Preparation for return shipment .....................................................................44
7.3 Ordering spare parts and operating supplies .................................................44
8 Malfunctions ...............................................................................................45
9 Decommissioning and disassembly ..............................................................46
9.1 Decommissioning .........................................................................................46
9.2 Removing the actuator from the valve ............................................................46
9.2.1 120cm² version ..........................................................................................46
9.2.2 350cm² version ..........................................................................................47
9.3 Relieving the spring compression in the actuator .............................................47
9.4 Disposal ......................................................................................................47
10 Annex.........................................................................................................48
10.1 After-sales service ........................................................................................48
10.2 Spare parts .................................................................................................49
4 EB 8317 EN
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type3371 Actuator is designed for operating a mounted globe valve. In combination with the valve, the actuator is used to shut off the ow of liquids, gases or vapors in
the pipeline. The actuator is suitable for on/off service. The actuator can be used in processing and industrial plants.
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, contact SAMSON.
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 8317 EN 5
Safety instructions and measures
Personal protective equipment
We recommend wearing the following personal protective equipment when handling the
Type3371 Pneumatic 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 Type3371 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 actuator 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.
6 EB 8317 EN
Safety instructions and measures
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.
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 e.g. uEB8111 for
SAMSON Type3321 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 con-
cerned and the actuator.
EB 8317 EN 7
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.
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.
Risk of personal injury due to preloaded springs.
Actuators with preloaded springs are under tension. They can be identied by the long
bolts protruding from the bottom of the actuator.
Î Before starting any work on the actuator, relieve the compression from the preload-
ed springs (see section9.3).
Risk of personal injury when the actuator vents.
While the valve is operating, the actuator may vent 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.
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 indicated on the SAMSON delivery note.
Î Information on safe use of the part affected, see
uhttp://www.samson.de/reach-en.html.
8 EB 8317 EN
Safety instructions and measures
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 tools.
Certain tools are required to work on the actuator.
Î Only use tools approved by SAMSON (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).
EB 8317 EN 9
Markings on the device
SAMSON 3371
2 Markings on the device
2.1 Actuator nameplate
The nameplate is stuck on the diaphragm
casing (see Fig.1). The nameplate of the
Type3371 with 120cm² actuator area is located on the bottom diaphragm case. The
nameplate of the Type3371 with 350cm²
actuator area is located on the top diaphragm case.
Nameplate
It includes all details required to identify the
device (see Fig.2):
1 Type designation
2 Conguration ID
3 Serial number
4 Permissible supply pressure p
max
in
bar/psi
5 Bench range in bar
6 Bench range in psi
7 Operating travel in mm
8 Symbol indicating fail-safe action
Actuator stem extends (FA)
Actuator stem retracts (FE)
9 Date of manufacture (month and year)
Fig.1: Location of nameplate
5
6
!
See technical data for ambient temperature
Model
Var.-ID Serial no.
Air supply max.
SAMSON AG D-60314 Frankfurt Made in Germany
Fig.2: Example for nameplate
Pneumatic Actuator 120 cm²
1
2 3
4
8
7
9
10 EB 8317 EN
EB 8317 EN 11
Design and principle of operation
3 Design and principle of oper-
ation
The Type3371 Pneumatic Actuators have an
actuator area of either 120 or 350cm².
They are mainly used for attachment to Series V2001 Valves:
− Type 3321 Globe Valve
− Type3323 Three-way Valve
− Type3531 Globe Valve for Heat Transfer
Oil
− Type3535 Three-way Valve for Heat
Transfer Oil
Table1 provides an overview of the possible
combinations and how the actuator is
mounted on the valve.
The pneumatic actuators mainly consist of
two diaphragm cases, a diaphragm, and internal springs. The actuator is connected to
the valve bonnet using a rod-type yoke. The
stem connector clamps connect the actuator
stem with the plug stem of the valve.
The signal pressure p
p
· A at the diaphragm surface A, which is
st
opposed by the springs in the actuator. The
bench range is determined by the number of
springs used and their compression, taking
into account the rated travel. The travel is
proportional to the signal pressure p
creates the force F =
st
.
st
tion on the top diaphragm case. With direction of action "actuator stem extends", the
compressed air is applied to the signal pressure connection on the bottom diaphragm
case.
The actuator's direction of action can be reversed (see section6.2).
3.2 Signal pressure routing
120cm² version (see Fig.3)
In the "actuator stem extends" version, the
signal pressure is routed through the bottom
signal pressure connection (A35) to the bottom diaphragm chamber and moves the actuator stem (A3) upward opposing the
spring force.
In the "actuator stem retracts" version, the
signal pressure is routed through the top signal pressure connection to the top diaphragm chamber and moves the actuator
stem (A3) downward opposing the spring
force.
3.1 Direction of action
The direction of action is determined by how
the springs and diaphragm plate are arranged in the actuator. With direction of action "actuator stem retracts", the compressed
air is applied to the signal pressure connec-
12 EB 8317 EN
Design and principle of operation
A31
•
A26
A10
A18
A13
A14
A11
A35
Mounting with crossbeam Mounting without crossbeam
A16
A2
•
•
•
•
A1
•
•
A3
•
A1 Vent plug
A2 Bottom diaphragm case
A3 Actuator stem
A10 Spring
A11 Rod
A12 Bushing
A13 Diaphragm plate
A14 Diaphragm plate
Fig.3: Functional diagram of Type3371 Actuator with 120cm² actuator area
•
A30
•
A17
•
A16 Top diaphragm case
A17 Crossbeam
A18 Diaphragm
A26 Collar nut
A30/
Stem connector clamps
A31
A35 Pneumatic connection
A72 Rod nut
•
A12
•
A72
EB 8317 EN 13
Design and principle of operation
A61
A10
A1
S
A15
A51
A50
A25
A20
A21
A27
A1
A5
A4
A2
A33
A1 Top diaphragm case
A2 Bottom diaphragm case
A4 Diaphragm
A5 Diaphragm plate
A7 Actuator stem
A10 Spring
A15 Collar nut
A20 Hexagon bolt
•
•
•
•
•
A40
A42
A41
•
A7
A21 Hexagon nut
A25 Washer
A27 Compressor
A33 Rod
A40 Radial shaft seal
A41 Wiper ring
A42 Dry bearing
A50 Screw for rod (A51)
•
•
A60
A54
•
•
•
•
•
•
•
•
•
•
A51 Rod
A54 Rod nut
A60 Plate
A61 Pneumatic connection
S Signal pressure
connection (stem retracts)
Fig.4: Functional diagram of Type3371 Actuator with 350cm² actuator area
14 EB 8317 EN
Design and principle of operation
350cm² version (see Fig.4)
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 signal pressure connection (S) to the top diaphragm chamber and moves the actuator
stem (A7) downward opposing the spring
force.
3.3 Fail-safe action
When the signal pressure is reduced or the
control signal fails, the fail-safe position of
the control valve depends on whether the
springs are installed in the top or bottom diaphragm chamber.
3.3.1 Version with direction of
action "actuator stem
extends" (FA)
When the signal pressure is reduced or the
control signal fails, the springs move the actuator stem downward and close the globe
valve. The valve opens when the signal pressure is increased enough to overcome the
spring force.
3.3.2 Version with direction of
action "actuator stem
retracts" (FE)
When the signal pressure is reduced or the
control signal fails, the springs move the actuator stem upward and open a mounted
globe valve. The valve closes when the signal
pressure is increased enough to overcome
the spring force.
3.4 Mounting types
There are two types of mounting depending
on the valve/actuator combination: mounting using a crossbeam or rods (see Table1).
When the actuator is mounted to the valve
using a crossbeam (Form B, Fig.5), the actuator is fastened to the valve bonnet using a
central nut.
When the actuator is mounted using rods
(Form C, Fig.6), the actuator is connected to
the valve bonnet using rods. In this case, a
crossbeam is not required for mounting the
actuator. A plate keeps the correct distance
between rods.
Both mounting types are described in section5.1.
EB 8317 EN 15
Design and principle of operation
Table1: Mounting types (see Fig.5 and Fig.6)
Actuator area 120cm² 350cm²
Travel 15mm 15mm 30mm
Type ... Valve Nominal size DN
3321 15 to 50 FormB –
3321 65 to 100 FormC FormC –
3321 100 – – FormC
3323 15 to 50 FormB – –
3323 65 to 80 – FormC –
3323 100 – – FormC
3531 15 to 80 FormB – –
3535 15 to 80 FormB – –
–
Fig.5: FormB: mounting using crossbeam Fig.6: FormC: mounting using rods
16 EB 8317 EN
Design and principle of operation
Ø168
Ø280
3.5 Versions
− Standard version of Type3371
(120cm²)
The housings of Type 3371 Pneumatic
Actuators have an actuator area of
120cm² and are made of die-cast aluminum.
− Standard version of Type3371
(350cm²)
The housings of Type3371 Pneumatic
Actuators have an actuator area of
350cm² and are made of sheet steel.
− Version with travel stop
The Type3371 Actuators with 120cm²
actuator area can be tted with a mechanically adjustable travel stop. The
travel is reduced by up to 50% in both
directions of action (stem extends or retracts).
The travel stop is not available for
Type3371 (350cm²).
− Version with handwheel
The Type3371 Actuators (120cm²) can
be tted with an additional handwheel.
The handwheel is mounted on the top diaphragm case (A1) and is used to adjust
the travel manually.
The handwheel is not available for
Type3371 (350cm²).
3.6 Technical data
The nameplate provides information on the
actuator version (see section2.1).
Note
More information is available in Data Sheet
uT8317.
182
Fig.7: Dimensional drawing of 120cm² version Fig.8: Dimensional drawing of 350cm² version
EB 8317 EN 17
231
Loading...