MOUNTING AND OPERATING INSTRUCTIONS

EB 8331-3 EN
Translation of original instructions

Type 3374 Electric Actuator
Version with three-step signal

Edition February 2024

Note on these mounting and operating instructions
These mounting and operating instructions (EB) assist you in mounting and operating the device safely. The instructions are bindingfor handling SAMSON devices. The images shown in this document are for illustration purposes only. The actual product may vary.
_ For the safe and proper use of these instructions, read them carefully and keep them for later reference.
_ If you have any additional questions not related to the contents of these instructions, contact SAMSON's After-sales Service
Department (aftersalesservice@samsongroup.com).
Documents relating to the device, such as the mounting and operating instructions, are available on our website:
https://www.samsongroup.com/en/downloads/documentation

Definition of signal words!

DANGER

Hazardous situations which, if not avoided, will result in deathor serious injury!

WARNING

Hazardous situations which, if not avoided, could result indeath or serious injury!

NOTICE

Property damage message or malfunction
Note
Additional information
Tip
Recommended action

2

EB 8331-3 EN

Contents

Contents

1
1.1
1.2
1.3
1.4

Safety instructions and measures.......................................................................................................................... 4
Notes on possible severe personal injury............................................................................................................... 6
Notes on possible personal injury..........................................................................................................................6
Notes on possible property damage...................................................................................................................... 6
Warnings on the device........................................................................................................................................ 72
2.1

Markings on the device........................................................................................................................................ 8
Nameplate............................................................................................................................................................8

3
3.1
3.2
3.3
3.4
3.5

Design and principle of operation.........................................................................................................................9
Mounting types..................................................................................................................................................... 9
Fail-safe action..................................................................................................................................................... 9
Additional equipment............................................................................................................................................ 9Technical data.....................................................................................................................................................10
Dimensions......................................................................................................................................................... 12

4
4.1
4.2
4.3
4.4
4.5

Shipment and on-site transport...........................................................................................................................15
Accepting the delivered goods............................................................................................................................. 15
Removing the packaging from the actuator...........................................................................................................15
Transporting the actuator.....................................................................................................................................15
Lifting the actuator.............................................................................................................................................. 15
Storing the actuator............................................................................................................................................ 15

5
5.1
5.2
5.3
5.3.1
5.3.2
5.4
5.4.1
5.4.2
5.5

Installation..........................................................................................................................................................16
Installation conditions.......................................................................................................................................... 16
Preparation for installation.................................................................................................................................. 16
Mounting the actuator......................................................................................................................................... 16
Construction with integrated yoke (form B)........................................................................................................... 16
Construction with ring nut (form A)......................................................................................................................17
Installing additional equipment............................................................................................................................ 20
Retrofitting limit contacts...................................................................................................................................... 20
Installing the resistance transmitters...................................................................................................................... 22
Electrical connection............................................................................................................................................ 24

6
6.1

Operation...........................................................................................................................................................25
Device overview and operating controls............................................................................................................... 25

7
7.1
7.2

Start-up.............................................................................................................................................................. 26
Adjusting the limit contacts.................................................................................................................................. 26
Adjusting the resistance transmitter...................................................................................................................... 26

8
8.1
8.1.1
8.1.2

Operation...........................................................................................................................................................28
Manual mode..................................................................................................................................................... 28
Mechanical override............................................................................................................................................28
Special version with handwheel........................................................................................................................... 28

9
9.1
9.2

Malfunctions....................................................................................................................................................... 29
Troubleshooting................................................................................................................................................... 29
Emergency action................................................................................................................................................29

10

Servicing............................................................................................................................................................ 30

11

Decommissioning................................................................................................................................................ 31

12
12.1
12.2

Removal............................................................................................................................................................. 32
Construction with integrated yoke........................................................................................................................ 32
Construction with ring nut....................................................................................................................................32

13
13.1

Repair................................................................................................................................................................ 33
Returning the actuator to SAMSON..................................................................................................................... 33

14

Disposal............................................................................................................................................................. 34

15
15.1

Certificates..........................................................................................................................................................35
Information on the UK sales region......................................................................................................................35

16
16.1
16.2

Appendix........................................................................................................................................................... 44
Parts for retrofitting and accessories.....................................................................................................................44
After-sales service............................................................................................................................................... 45

EB 8331-3 EN3

Safety instructions and measures

1

Safety instructions and measures

Intended use
The Type 3374 Electric Actuator is designed to operate amounted globe valve used in industrial applications as wellas in heating, ventilation and air-conditioning systems. The
actuator is designed to operate under exactly defined conditions (e.g. thrust, travel). Therefore, operators must ensure thatthe actuator is only used in operating conditions that meet the
specifications used for sizing the actuator at the ordering stage.
In case operators intend to use the actuator in applications orconditions other than those specified, contact SAMSON.
SAMSON does not assume any liability for damage resulting
from the failure to use the device for its intended purpose orfor damage caused by external forces or any other external
factors.
_ Refer to the technical data for limits and fields of application
as well as possible uses (see Chapter 3).
Reasonably foreseeable misuse
The actuator is not suitable for the following applications:–

Use outside the limits defined during sizing and by thetechnical data–

Outdoor use

Furthermore, the following activities do not comply with theintended use:–

Use of non-original spare parts–

Performing service and repair work not described

Qualifications of operating personnel
The product (Type 3374) must be mounted, started up, serviced
and repaired by fully trained and qualified personnel only;
the accepted industry codes and practices must be observed.
According to the 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 totheir specialized training, their knowledge and experience aswell as their knowledge of the applicable standards.
Personal protective equipment
No personal protective equipment is required for the direct
handling of the electric actuator. Work on the control valve may
be necessary when mounting or removing the device.
_ Observe the requirements for personal protective equipment
specified in the valve documentation.

Upon supply voltage failure, a valve, which has a Type 3374
Electric Actuator with fail-safe action mounted on it, moves to acertain fail-safe position. The direction of the fail-safe action is
specified on the nameplate of SAMSON actuators.
Warning against residual hazards
The product (Type 3374) has a direct influence on the control
valve. To avoid personal injury or property damage, plant
operators and operating personnel must prevent hazards that
could be caused in the control valve by the process medium, theoperating pressure, the signal pressure or by moving parts by
taking appropriate precautions.
Plant operators and operating personnel must observe all
hazard statements, warnings and caution notes in thesemounting and operating instructions, especially for installation,
start-up and service work.
Responsibilities of the operator
Operators are responsible for proper use and compliance withthe safety regulations. Operators are obliged to provide thesemounting and operating instructions to the operating personnel
and to instruct them in proper operation. Furthermore,
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 specified 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.
Referenced standards, directives and regulations
The product (Type 3374) with a CE marking fulfills the requirements of the following Directives:–

RoHS Directive 2011/65/EU–

EMC Directive 2014/30/EU–

Low-voltage Directive 2014/35/EU

The product (Type 3374) with a UKCA marking fulfills therequirements of the following Regulations:–

SI 2016 No. 1091 (The Electromagnetic Compatibility
Regulations 2016)–

SI 2016 No. 1101 (The Electrical Equipment (Safety)
Regulations 2016)–

SI 2012 No. 3032 (The Restriction of the Use of Hazardous
Substances in Electrical and Electronic Equipment Regulations 2012)_ Check with the plant operator for details on further
protective equipment.

The product (Type 3374) with an EAC marking fulfills therequirements of the following Directives:

Revisions and other activities–

TR CU 004/2011

Revisions, conversions or other modifications of the product(Type 3374) 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.

–

TR CU 020/2011

The declarations of conformity and certificates are included in
Chapter Certificates.

Safety features
The actuator automatically switches off when one of the end
positions is reached.

4

The product (Type 3374) with a CE marking is designed for use
in low voltage installations.
_ For wiring, maintenance and repair, observe the relevant
safety regulations.

EB 8331-3 EN

Safety instructions and measures

Referenced documentation
The following documents apply in addition to these mounting
and operating instructions:
Mounting and operating instructions of the valve on which theelectric actuator is mounted, e.g. for SAMSON valves:
EB 3018 for Type 42-36 E Pressure-independent Control ValveEB 5861 for Type 3260 Three-way ValveEB 5868-1 for Type 3213 and Type 3214 Globe Valvesbalanced by a diaphragmEB 5868/5869 for Type 3213 and Type 3214 Valves
EB 8012 for Type 3241 Globe Valve (ANSI and JIS version)
EB 8015 for Type 3241 Globe Valve (DIN version)
EB 8026 for Type 3244 Three-way Valve
EB 8113/8114 for Type 3323 Three-way Valve
EB 8131/8132 for Type 3531 Globe Valve for Heat Transfer
Oil
EB 8135/8136 for Type 3535 Three-way Valve for Heat
Transfer Oil

EB 8331-3 EN

5

Safety instructions and measures

1.1

Notes on possible severe personal
injuryRisk of fatal injury due to electric shock.
_ Before connecting the wiring, performing any work on thedevice or opening the device, disconnect the supply voltage
and protect it against unintentional reconnection.
_ Only use protective equipment that can be protected against
unintentional reconnection of the power supply.
_ Do not open the actuator housing.
_ Do not remove any covers to perform adjustment work onlive parts.
The electric actuator is protected against spray water (IP54).
_ Avoid jets of water.
_ Use suitable cable grips at the cable entries.
The cable grip in the cable glands must be approved forsuch use.

1.2

Notes on possible personal injury

1.3

Notes on possible property damage

Risk of damage to the electric actuator due to the supply
voltage exceeding the permissible tolerances.
The Type 3374 Electric Actuator is designed for use according
to regulations for low-voltage installations.
_ Observe the permissible tolerances of the supply voltage.
Risk of damage to the electric actuator due to over-torquing.
Observe the specified torques when tightening the mounting
parts of Type 3374 Electric Actuators. Over-torquing leads toparts wearing out more quickly.
_ Observe the specified tightening torques.
Risk of damage to the electric actuator due to incorrect
operation of the manual override.
The actuator stem of the electric actuator can be adjusted
manually.
_ Do not operate the manual override while the actuator is inoperation.
_ Only operate the manual override of actuators without failsafe action in the de-energized state.
Risk of damage to the electric actuator due to incorrectconnection of the voltage.

Crush hazard arising from moving parts.
The electric actuator contains moving parts (actuator and plugstems), which can injure hands or fingers if inserted into theactuator.
_ Do not insert hands or finger into the yoke while the valve isin operation.
_ Before performing any work on the control valve or opening
the electric device, disconnect the supply voltage and protect
it against unintentional reconnection.
_ Do not impede the movement of the actuator or plug stemby inserting objects into their path.
Risk of personal injury due to incorrect operation, use or
installation as a result of information on the actuator being
illegible.

The electric actuator has terminals to retract the stem (eLterminal) and to extend the stem (aL terminal).
_ Do not apply a voltage to eL and aL terminals at the sametime.
Risk of damage to the connecting cables as a result of being
bent, twisted, pulled or squeezed.
_ Use suitable cable grips at the cable entries.
The cable grip in the cable glands must be approved forsuch use.
Risk of actuator damage due to foreign particles entering it.
_ Seal unused cable entries with suitable blanking plugs.
_ Do not guide cables through blanking plugs into theactuator housing.

Over time, markings, labels and nameplates on the actuator
may become covered with dirt or become illegible in someother way. As a result, hazards may go unnoticed and thenecessary instructions not followed. There is a risk of personal
injury.
_ Keep all relevant markings and inscriptions on the device ina constantly legible state.
_ Immediately renew damaged, missing or incorrect
nameplates or labels.

6

EB 8331-3 EN

Safety instructions and measures

1.4

Warnings on the device

Warning symbols

EB 8331-3 EN

Meaning

Location on the device

General warning_ Refer to the mounting and operating
instructions.

Inside the actuator

Class of protection II(only applies when the housing cover is
attached and fastened)_ Refer to the mounting and operating
instructions.

Actuator housing

7

Markings on the device

2Markings on the device

2.1

Nameplate

The nameplate shown was up to date at the time of publicationof this document. The nameplate on the device may differ fromthe one shown.
1
5

2
3

:
:

:

6
8

7

4

:

9

:

10

:

11

12

13

14

15

1F155

1
2
3
4
5
6
7
8
9
10
11
12

Type designation
Material number
Serial number
Date of manufacture
Data Matrix code
Supply voltage; power line frequency
Power consumption
Rated travel
Stroking speed
Thrust (actuator stem retracts)
Thrust (actuator stem extends)
Fail-safe action

Retracts

13

Extends
Additional electrical equipment
Mechanical limit contacts

14
15

8

Resistance transmitters
Testing according to DIN EN 14597
Other mark of conformity

EB 8331-3 EN

Design and principle of operation

3

Design and principle of operation

The Type 3374 Electric Actuator is linear actuator, which is usedin combination with SAMSON valves in industrial plants as wellas in heating, ventilation and air-conditioning systems.
The force of the synchronous motor is transmitted to the actuator
stem over gearing and a ball screw drive. A three-step signal
issued by an electronic controller is used to control the electric
actuator. The control signal of the controller is connected to theeL and aL terminals of the actuator. Voltage applied to eL causes
the actuator motor to retract the actuator stem. Voltage applied
to aL causes the actuator motor to extend the actuator stem. The
motor is switched off by torque switches or in case of overload.

3.1

Mounting types

Construction with integrated yoke
The Type 3374 Actuator is available with an integrated yoke(see Fig. 1).

The direction of action depends on the actuator version andcannot be reversed.
–“Actuator stem extends” fail-safe action:–

The actuator stem extends upon supply voltage failure.
“Actuator stem retracts” fail-safe action:
The actuator stem retracts upon supply voltage failure.
NOTICE!

Increased wear and shortened service life of the actuator.
_ Do not use the fail-safe action to control the valve position.
Testing according to DIN EN 14597
Type 3374 Electric Actuators with “Actuator stem extends” failsafe action which have a test mark on their nameplate aretested by the German technical surveillance association TÜV
according to DIN EN 14597 in combination with different
SAMSON valves (the register number is available on request).

3.3

Additional equipment

The actuator can be equipped with the following additional
equipment to influence the tasks of control equipment:–

Mechanical limit contacts–

Resistance transmitters

Mechanical limit contacts
Mechanical limit contacts consist of two floating changeoverswitches. Their switching positions can be changed independently from one another by continuously adjustable cam disks.

Fig. 1: Construction with integrated yoke (form B)

Construction with ring nut
The Type 3374 Actuator is available with an M30x1.5 ring nut
including the necessary stem connecting parts (see Fig. 2).

The limit contacts are suitable for retrofitting. The retrofitting
and adjustment of the mechanical limit contacts is described in
Chapter 5.
Resistance transmitters
The actuator can optionally be equipped with two resistancetransmitters. They each consist of a potentiometer, which is
linked to the gear of the actuator over gear wheels. The resistance value, which is proportional to the valve travel, can beused for position feedback.
It is possible to retrofit the resistance transmitter. It is describedin Chapter 5.

Fig. 2: Construction with ring nut (form A)

3.2

Fail-safe action

The Type 3374 Actuator is available with fail-safe action. The
actuators with fail-safe action have a spring assembly and anelectromagnet. The actuator is moved by the force of the spring
to the fail-safe position when the electromagnet is de-energized.

EB 8331-3 EN

9Design and principle of operation

3.4

Technical data

Table 1: Technical data · General
Type 3374-10

Form 1)

-11

-15

B

Fail-safe action

30

-21

-25

-26

B

-27

A

-31

-35

B

-36
A

Without

Actuator stem extends

Actuator stem retracts

–

✓

–

Testing according to
DIN EN 14597
Rated travel in mm

-17
A

15

30

Motor switch-off

Torque switches

Duty typeS1 - 100 % according to EN 60034-1

15

30

15

30

15

30

15

Permissible temperature ranges 2)
Ambient

5 to 60 °C

Storage–25 to +70 °C

Material

Housing and cover: Plastic (glass-fiber reinforced PPO)

SafetyDegree of protection3)

IP54 according to EN 60529 when blanking plugs are inserted, IP65 with three approved cableglands 4), suspended mounting according to EN 60664-1 not permitted

Class of protection 3)

II according to EN 61140

Device safety

According to EN 61010-1

3)

Noise immunity

According to EN 61000-6-2 and EN 61326-1

Noise emission

According to EN 61000-6-3 and EN 61326-1

Conformity
1)
2)
3)
4)

10

Form A: with ring nut, form B: with mounted yoke
The permissible medium temperature depends on the valve on which the electric actuator is mounted. The limits in the valve documentation
apply.
Only when the housing cover is attached and fastened
Cable glands M20x1.5 with metal nut (A/F 23/24) can be retrofitted (see Chapter 16.1 for accessories)

EB 8331-3 EN

Design and principle of operation

Table 2: Technical data · Version with three-step signal
Type 3374

-10

-11

-15

-17

-21

-25

-26

-27

-31

-35

-36

Extends

2.5

2.5

2.5

5

2

1.8

2

3

2

2.1

2

Retracts

2.5

2.5

2.5

5

0.5

2.1

0.5

0.5

0.5

1.8

0.5

–

–

–

–

2

1.8

2

3

0.5

1.8

0.5

Thrust in kN

Nominal thrust of safety spring in kN

Only possible with hex wrench when supply voltage is connected
Manual overrideWith hex wrench(see Chapter 8)
Adjustment not possible after fail-safe action has been triggered

Stroking speed in mm/s
Normal

0.125

0.1

0.125

0.1

0.125

0.1

0.125

0.1

0.125

Fast

0.25

–

0.25

–

0.25

–

0.25

–

0.25

In the event of fail-safe action

–

1.25

Transit time in s for rated travel
Normal

240

120

240

300

120

300

120

300

120

300

120

Fast

120

60

120

–

60

–

60

–

60

–

60

12

24

12

24

12

24

12

In the event of fail-safe action–

Electrical connection
230 V, +10/–15 %Supply voltage

24 V, +10/–15 %Power line frequency

50 Hz

Power consumption in VA
Standard

7.5

13

10.5

16

10.5

16

10.5

16

10.5

Fast

13

–

16

–

16

–

16

–

16

3.3

3.9

5.8

4.0

6.2

3.5

5.8

3.6

Weight in kg (approx.)

3.2

3.2

3.3

Additional equipment
Limit contacts

Two adjustable limit contacts with mechanical changeover switches; max. 240 V AC, max. 1 A, without
contact protection 1)

Resistance transmitters

1)

Two potentiometers, 0 to 1000 Ω ±15 %, max. 200 mW, usable range approx. 0 to 900 ΩContact protection with suitable spark suppression must be fitted for the switching contact. Observe the manufacturer's specifications
concerning the connected load to select the appropriate spark suppression. A fuse, which is suitable for the application's circuit, must be used
for the short-circuit and overload protection.

EB 8331-3 EN

11

Design and principle of operation

3.5

Dimensions
Note

The dimension hx indicates the minimum clearance required to be able to operate the actuator. Sufficient clearance must be
available to facilitate wiring and operation. We recommend a minimum clearance of 600 mm.

hx

194
57

501)

h

298

146

120

1)

10

When the actuator stem is fully extended

Fig. 3: Dimensions in mm · Type 3374-10, -11, -21 and -31, version with integrated yoke (form B)

Legend for Fig. 3:

12Type 3374

Dimension h

-10

30 mm

-11

15 mm

-21

15 mm

-31

15 mm

Dimension hx≥60 mmEB 8331-3 EN

Design and principle of operation

193

hx

57

h

h11)

220

146

120

16
1)

When the actuator stem is fully extended

Fig. 4: Dimensions in mm · Type 3374-15, -17, -26 and -36, version with ring nut (form A)

Legend for Fig. 4:
-15
-17
-26
-36

Dimension h

Dimension h1

30 mm

90 mm

Dimension hx≥100 mm
15 mm

75 mm

193
57

90 1)

30

293

146

120

≥100

Type 3374

16
1)

When the actuator stem is fully extended

Fig. 5: Dimensions in mm · Type 3374-25 and -27, form A version

EB 8331-3 EN

13

Design and principle of operation

193

≥100

57

30

601)

293

146

120

1)

16

When the actuator stem is fully extended

Fig. 6: Dimensions in mm · Type 3374-35, form A version

12

63

32.3

Fig. 7: Dimensions in mm · Handwheel as special version

14

EB 8331-3 EN

Shipment and on-site transport

4

Shipment and on-site transport

4.5

The work described in this chapter is to be performed only by
personnel appropriately qualified to carry out such tasks.

!

4.1

Accepting the delivered goods

After receiving the shipment, proceed as follows:
1. Compare the shipment received with the delivery note.
2. Check the shipment for transportation damage. Report any
damage to SAMSON and the forwarding agent (refer todelivery note).

4.2

Removing the packaging from theactuator
Note

Storing the actuator
NOTICE

Risk of electric actuator damage due to improper storage.
_ Observe the storage instructions.
_ Avoid long storage times.
_ Contact SAMSON in case of different storage conditions or
longer storage periods.
Note
SAMSON recommends to regularly check the electric actuatorand the prevailing storage conditions during long storage
periods.
Storage instructions–

Protect the electric actuator against external influences (e.g.
impact).

–Protect the electric actuator against moisture and dirt.

–

Make sure that the ambient air is free of acids or othercorrosive media.

3. Dispose of the packaging in accordance with the valid
regulations.

–Observe the permissible storage temperature from –20 to+70 °C.

Table 3: Scope of delivery–

Do not place any objects on the electric actuator.

Do not remove the packaging until immediately before
mounting and start-up.
1. Remove the packaging from the electric actuator.
2. Check scope of delivery.

1x Type 3374-xx Electric Actuator
1x Document IP 8331-3 (Important Product Information)
for Types 3374-10, -11, -21, -31:
1x Accessory 1400-6817, consisting of
2x stem connector parts for Ø 10 mm stem
2x M5 hex screws
for Types 3374-15, -17, -25, -26, -27, -35, -36:
1x Accessory 0900-2679, consisting of
2x stem connector parts for Ø 16 mm stem
2x M6 screws
1x M30x1.5 ring nut

4.3

Transporting the actuator–

Protect the actuator against external influences (e.g. impact).

–

Protect the actuator against moisture and dirt.

–

Observe the permissible transportation temperature of –25
to +70 °C.

4.4

Lifting the actuator

Due to the low service weight, lifting equipment is not required
to lift the electric actuator.

EB 8331-3 EN

15

Installation

5

Installation

5.3

Mounting the actuator

The work described in this chapter is to be performed only by
personnel appropriately qualified to carry out such tasks.

5.3.1

5.1

For mounting on:

Installation conditions

Construction with integrated yoke
(form B)

Work position–

Series V2001 (DN 15 to 50)

If not described otherwise in the valve documentation, the work
position for the control valve is the front view looking onto theoperating controls.

–

Type 3214 (DN 65 to 100)–

Type 3260 (DN 65 to 80)–

Type 3260 (DN 100 to 150)

Point of installation_ See Fig. 10.

The electric actuator must only be used indoors.
Mounting position
The control valve can be installed in the pipeline in any desired
position. However, a suspended mounting position of theactuator is not permissible.

1. Remove protective covers and unscrew nut (6) from thevalve.
2. Retract actuator stem (3) (see Chapter 8.1.1).

Fig. 8: Mounting position

5.2

Actuating shaft

Preparation for installation

Before installation, make sure the following conditions are met:–

The actuator is not damaged.

Proceed as follows:_ Lay out the necessary material and tools to have them readyduring installation work.
Cover screws
Phillips screws are used to fasten the actuator housing cover.
Use a POZIDRIV® PZ2 screwdriver to undo and tighten thescrews.

Fig. 9: Actuating shaft for manual override (version with integrated
yoke)

Note
For actuators with “actuator stem extends” fail-safe action (seenameplate in Chapter 2), the supply voltage must be connected
to retract the actuator stem.
_ To connect the supply voltage, proceed as described in
Chapter 5.5.
3. Place the actuator with yoke on the valve and fasten using
nut (6, A/F 36).
Tightening torque

100 Nm

4. When the plug stem (5) fits closely onto the actuator stem(3), attach both stem connector clamps (4) and fasten withscrews.

16

EB 8331-3 EN

Installation

Types 3374-10/-11/-21/-31
Connection with yoke (form B)
Mounting on Series V2001 Valves (DN 15 to 50)
Type 3260, DN 65 to 150
Type 3214, DN 65 to 100

Types 3374-10/-11/-21/-31
Connection with yoke (form B)
Mounting on Series V2001 Valves (DN 65 to 100)

1

2.1
3
4
5
6

Fig. 10: Mounting · Version with integrated yoke
1

Actuator

2.1

Actuator yoke

3

Actuator stem

4

Stem connector

5

Plug stem

6

Nut

Mounting on Series V2001 Valves (DN 65 to 100)

Fig. 11: Mounting · Version with actuator yoke and V2001 accessories
1

Actuator

2.1

Actuator yoke

3

Actuator stem

5

Plug stem

11

Screws

1)

A spacer is required here to mount a Type 3323 Three-way Valve(DN 65 to 80).

_ See Fig. 11.
1. Remove protective covers.
2. Actuator without fail-safe action and with “Actuator stem
retracts” fail-safe action: retract the actuator stem using themanual override (see Chapter 8.1.1).
“Actuator stem extends” fail-safe action: connect the
supply voltage and retract the actuator stem using themanual override (see Chapter 8.1.1).
3. Place the actuator with yoke on the valve and fasten using
the screws (11).
Note
A spacer (see Appendix) is required to mount a Type 3323
Three-way Valve (DN 65 to 80).
4. Switch off the supply voltage.
_ The actuator stem extends.

Fig. 12: Mounting kit V2001

Note
The V2001 mounting kit is not included in the scope of delivery.
It is available as an accessory (see "Parts for retrofitting andaccessories").

5.3.2

Construction with ring nut (form A)

For mounting on:–

Series 240

5. Extend the actuator stem until the actuator stem (3) rests on
the plug stem (5).

–Type 3214 balanced by a bellows (DN 125 to 250)

6. Position the two stem connector clamps (see Fig. 12) fromthe V2001 mounting kit and fasten tight.

–

Type 3260 (DN 65 to 100)–

Type 3260 (DN 100 to 150)

Mounting on Series 240 Valves_ See Fig. 14.

EB 8331-3 EN

17

Installation

1. Push the plug stem (5) down to close the valve.

Types 3374-15, -17, -25, -26, -27, -35, -36
Connection with ring nut (form A)
Mounting onto Series 240 Valves:

2. Turn the stem connector nut (8) until the dimension x
measures 75 mm (DN 100 and larger: 90 mm) from the topof the yoke to the middle of the stem connector nut (8). Lockthis position with the lock nut (9).

1

3. Retract actuator stem (3) as described in Chapter 8.

2.3
7
3

x

4
8
9

10
5

Fig. 14: Mounting on Series 240 Valves

Actuating shaft

Fig. 13: Actuating shaft for manual override (version with ring nut)

1

Actuator

2.3

Bonnet3

Actuator stem

4

Stem connector

5

Plug stem

7

Ring nut

8

Stem connector nut

9

Lock nut

10

Travel indicator scale

Mounting on Type 3214 Valve (DN 125 to 250)

Note
For actuators with “actuator stem extends” fail-safe action (seenameplate in Chapter 2), the supply voltage must be connected
to retract the actuator stem.
_ To connect the supply voltage, proceed as described in
Chapter 5.5.

_ See Fig. 16.
1.
Retract actuator stem (3) (see Chapter 8.1.1).

4. Place actuator on the valve bonnet (2.3) and secure using
the ring nut (7).
5. When the stem connector nut (8) rests on the actuator stem(3), attach both stem connector clamps (4) and fasten withscrews.
Tightening torque

150 Nm

6. Move actuator stem (3) to the end position (valve closed) as
described in Chapter 8.1.1.
7. Align travel indicator scale (10) with the middle of the stem
connector (4) and screw tight.

18

EB 8331-3 EN

Installation

Type 3374-15, -27
Connection with ring nut (form A)
Mounting on Type 3214 (DN 125
to 250), balanced by a bellows

Actuating shaft

Fig. 16: Mounting on Type 3214
Fig. 15: Actuating shaft for manual override (version with ring nut)

Note
For actuators with “actuator stem extends” fail-safe action (seenameplate in Chapter 2), the supply voltage must be connected
to retract the actuator stem.
_ To connect the supply voltage, proceed as described in
Chapter 5.5.
2. Place actuator on the valve and secure using the ringnut (7). If necessary, retract the actuator stem slightly
beforehand.
3. When the stem connector nut (5) rests on the actuator stem(3), attach both stem connector clamps (4) and fasten withscrews.
Tightening torque

150 Nm

4. Move actuator stem (3) to the end position (valve closed) as
described in Chapter 8.1.1.
5. Align travel indicator scale (10) with the middle of the stem
connector (4) and screw tight.

1

Actuator

2.2

Valve yoke

3

Actuator stem

4

Stem connector

5

Plug stem

7

Ring nut

10

Travel indicator scale

Mounting on Type 3260 (DN 65 to 150) and Type 3214 (DN
125 to 250), valves balanced by a diaphragm_ See Fig. 17.
1. Actuator without fail-safe action:
Retract actuator stem as described in Chapter 8.1.1.
Actuator with fail-safe action:
Retract the actuator stem electrically in the MAN mode (seeChapter ).
Retract actuator stem as described in Chapter 8.1.1.
Note
For actuators with “actuator stem extends” fail-safe action (seenameplate in Chapter 2), the supply voltage must be connected
to retract the actuator stem.
_ To connect the supply voltage, proceed as described in
Chapter 5.5.
2. Place the additional yoke on the valve and fasten tight.
3. Place actuator on the additional yoke and fasten using hex
nut (2).
4. When the stem connector nut (5) rests on the actuator stem(3), attach both stem connector clamps (4) and fasten withscrews.
Tightening torque

150 Nm

5. Move actuator stem (3) to the end position (valve closed) as
described in Chapter 8.

EB 8331-3 EN

19

Installation

Type 3374-15, -27
Connection with ring nut (form A)
For mounting on
Type 3260 (DN 65 to 150) and Type 3214 (DN
125 to 250), valves balanced by a diaphragm

1
3

2

Note
The contact cams (19) are ready-mounted to the cam holder(20) and the retaining rings (9) to form the contact cam unit(21) (see Fig. 21).
Tip
SAMSON recommends applying a small amount of lubricant(e.g. Vaseline) to the spindles on the gear faces and to the sidesof the cogs.

4

4

5

3

6

10

6
7
Fig. 17: Mounting on Type 3260 Valve (DN 65 to 150) andType 3214 (DN 125 to 250), valves balanced by a diaphragm1

Actuator2

Hex nut

3

Actuator stem

4

Stem connector

5

Stem connector nut

6

Stem connector

7

Hex nut

5.4!

Installing additional equipment
DANGER

Risk of fatal injury due to electric shock.
_ Before installing electrical accessories, switch off the supply
voltage and protect it against unintentional reconnection.
_ Disconnect the signal lines.

5.4.1

1

Retrofitting limit contacts

To install the mechanical limit contacts, the following retrofit kits
are required depending on the equipment:

Fig. 18: Basic unit–

1

Intermediate gear2

Spindle gear3

Serrated ring (for 1)

4

Tension spring

6

Serrated ring (for 2)

10

Shim

–

Basic unit (see Fig. 18)
Mechanical limit contacts (see Fig. 19)
Note

The retrofitting of the limit contacts varies depending on whether
the actuator is fitted with resistance transmitters or not.
– See "Actuator without resistance transmitters", page 21.
–

2

See "Actuator with resistance transmitters", page 22.
Note

To undo the screws on the housing cover, use a POZIDRIV® PZ2
screwdriver to get enough hold on the screw heads.

20

EB 8331-3 EN

Installation

9

3

16

8

gearwheel of the intermediate gear (1). In addition, theadjustment gears (18) must engage properly in the corresponding gears of the contact cams (19).

17

12. Secure the cam holder (20) and intermediate gear (1) withthe serrated ring (3); push down the serrated ring as far as
it will go.
13. Position the terminal board (17) at the base of the support
at a 45° angle (approx.) with the switches pointing towards
the gears. Swivel the upper end of the terminal board
towards the gears until the board is in a vertical positionand properly engaged in the support.
14. Slide the actuator board (12) back into its guiding. Make
sure that the gears are properly engaged. Fasten the board
using screws.

18

19

20

Fig. 19: Mechanical limit contacts · Retrofit kit
3Serrated ring

8

Spacer9

Retaining ring

16

Screw (WN 1412)

17

Terminal board

18

Adjustment gear

19

Contact cam

20

Cam holder

15. Adjust limit contacts as described in Chapter 7.
16. Replace the housing cover. Briefly turn the fastening screws
counterclockwise with a screwdriver to center them. Thenfasten down the cover by tightening the screws.
20
17

11.1
3
1

11.2

2

19

Actuator without resistance transmitters18

12_ See Fig. 20.
13

1. Undo screws on housing cover and remove the housing
cover from the actuator.

4

2. Move the actuator stem to the end position depending on
the fail-safe action “Actuator stem extends” or “Actuator
stem retracts” (see Chapter 8).
3. Unscrew fastening screws. Slide the actuator board (12)from its guiding to the right. Slightly lift the board andcontinue pushing it further towards the cable entry.
4. Clip the spindle gear (2) onto the sleeve (13) and click into
place. Make sure the side latch is properly engaged in thegroove of the sleeve.
5. Slide the intermediate gear (1) onto the spindle 1 (11.1),
mount the serrated ring (3) and push it down as far as it willgo.

8Fig. 20: Inside view of Type 3374 Actuator
1

Intermediate gear2

Spindle gear3

Serrated ring4

Tension spring

8

Spacer

11.1 Spindle 1

6. Slide the spacer (8) onto the spindle 2 (11.2).

11.2 Spindle 2

7. Place the tension spring (4) on to the corresponding spindle,
ensuring that the long wire of the tension spring rests on thespacer (8) and on the intermediate gear (1).

12Actuator board

13

Bearing sleeve

17

Terminal board

18

Adjustment gear

19

Contact cam

20

Cam holder

8. Place both ready-assembled contact cams (19) with the cog
first onto the cam holder (20).
9. Slide adjustment gears (18) onto their spindles and fasten
with one screw each. Check whether the adjustment gears
can be turned easily. If not, slightly loosen its screw again.
10. Turn both contact cams (19) on the cam holder (20) as illustrated in Fig. 21 corresponding with the position of theactuator stem.
11. Slide the cam holder (20) with both contact cams (19) onto
the spindle 2 (11.2) corresponding with the position of
the actuator stem as illustrated in Fig. 20. Make sure thatthe outermost cog of the cam support (20) engages in the

EB 8331-3 EN

21

Installation

19

20

19

11.2

6

Actuator stem
Retracted

12

Actuator stem
Extended

Fig. 21: Contact cam and switch carrier
19

Contact cam

20

Switch carrier
18

21

1
B

10

Fig. 23: Inside view · Type 3374 Actuator with resistance transmitters
With actuator stem retracted
18

21

1

6

Serrated ring

10

Shim

11.2 Spindle 2
B

12

Actuator board

5.4.2
With actuator stem extended
Fig. 22: Contact cam unit
1

Intermediate gear

18

Adjustment gear

21

Contact cam

Installing the resistance transmitters

An actuator board with the corresponding resistance transmitters and gear wheels is required for a resistance transmitter
retrofit. Which actuator board is to be used depends on theactuator version as well as the supply voltage and transit time
specifications (see Appendix).
Note

Actuator with resistance transmitters

The retrofitting of the resistance transmitters varies dependingon whether the actuator is fitted with limit contacts or not.

_ See Fig. 23.

–

Actuators without limit contacts: see description below.

–

Actuators with limit contacts: see "step 1", page 23.

1. Undo screws on housing cover and remove the housing
cover from the actuator.
2. Move the actuator stem to the end position depending on
the fail-safe action “Actuator stem extends” or “Actuator
stem retracts” (see Chapter 8).

Actuators without limit contacts
If the actuator does not have limit contacts, an additional retrofit
kit (see Fig. 25) is required.

3. Remove serrated ring (6) and shim (10) from spindle 2(11.2).

1. Unscrew fastening screws. Slide the actuator board (12)from its guiding to the right.

4. Continue with step 8. in section .

2. Slightly lift the board and continue pushing it further
towards the cable entry.

Note
The basic unit is not required for the version with resistancetransmitter.

3. Clip the spindle gear (2) onto the sleeve (13) and click into
place.
Make sure the latch is properly engaged in the groove of
the sleeve.
4. Slide the intermediate gear (1) onto the spindle 1 (11.1).
5. Mount the serrated ring (3) and push it down as far as it
will go.
6. Place the tension spring (4) onto the spindle 3 (11.3),
ensuring that the long wire of the tension spring rests on theintermediate gear (1) and that the short wire of the spring islocated between spindle 3 (11.3) and spindle 4 (11.4).

22

EB 8331-3 EN

Installation

7. Slide the shim (10) onto the spindle 2 (11.2).

1Intermediate gear

8. Mount the serrated ring (6) and push it down as far as it
will go.

2

Spindle gear3

Serrated ring4

Tension spring

6

Serrated ring

10

Shim

9. Put the resistance transmitter gears (22 and 23) fitted withretaining rings onto their shafts to correspond with the
rated travel of the valve. The rated travel inscription 'A' for
30 mm rated travel or 'B' for 15 mm rated travel must be
legible from above (see Fig. 24).
10. Slide the actuator board (12) into its guiding. Make surethat all the gears are properly engaged.
11. Fasten down the board.

11.1 Spindle 1
11.2 Spindle 2
11.3 Spindle 3
11.4 Spindle 4
12

Actuator board

Actuators with limit contacts
1. Undo screws on housing cover and remove the housing
cover from the actuator.

22.1

2. Move the actuator stem to the end position depending on
the fail-safe action “Actuator stem extends” or “Actuator
stem retracts” (see Chapter 8).

22aB

3. Unscrew fastening screws. Slide the actuator board (12)from its guiding to the right.

23.1

4. Slightly lift the board and continue pushing it further
towards the cable entry.

23

e
Ra

5. Slide the new actuator board into its guiding. Make surethat all the gears are properly engaged.

lve
Bd trate 5
1

6. Fasten down the board.
a

Note
The basic unit is not required for the version with limit contacts.

Fig. 24: Gears with retaining rings
22

12 (actuator board)

Gear of potentiometer 1

22.1 Shaft of potentiometer 1
23

Gear of potentiometer 2

23.1 Shaft of potentiometer 2

6

11.2

11.1

3
1

11.4

12

11.3

2
4

Fig. 26: Inside view · Type 3374 Actuator with limit contacts

10
Fig. 25: Inside view of Type 3374 Actuator without limit contacts

EB 8331-3 EN

23

Installation

5.5!

Electrical connection
DANGER

Risk of fatal injury due to electric shock.
_ Upon installation of the electric cables, you are required
to observe the regulations concerning low-voltage installations according to DIN VDE 0100 as well as the technicalconnection requirements of your local energy supplier.

–

+

N

_ Use a suitable voltage supply which does not allow any
dangerous voltage to reach the device in normal operation
or in the event of a malfunction in the system or any othersystem parts.

LN_ Only perform the electrical connection after disconnecting
the supply voltage. Make sure the supply voltage cannot bereconnected unintentionally.

L
1)

aL

_ Use approved cable glands with cable grip at the cableentry.
!

L

eL

N

N

L

DANGER

Touching exposed wire ends can cause fatal injury.
Appropriate mechanical fixtures must be mounted in front of
the terminals to ensure that the connected wires cannot become
loose or be pulled out unintentionally.
_ Take suitable precautions to prevent wires from disconnecting.

1)

Version with fail-safe action only

Note
A maximum of three cable glands can be mounted on the
housing for cable entry.
eL_ Connect the wiring according to the following wiring plans.
_ Guide the cables to the spring-cage terminals from the top(observe Table 4).
Table 4: Cables and stranded wires that can be used
Cable
Single-wire H05(07) V-U

Cross section
1)

0.2 to 1.5 mm²

Fine-wire H05(07) V-K 1)

0.2 to 1.5 mm²With wire ferrule according to
DIN 46228-1

0.25 to 1.5 mm²With wire ferrule with collar according to
DIN 46228-4

0.25 to0.75 mm²

1)

Length of insulation to be stripped off wire ends: 8 mm

aL
Fig. 27: Electrical connection
41 44 42 51 54 52

Fig. 28: Mechanical limit contacts
81 82 83ae

91 92 93eaFig. 29: Resistance transmitters

24

EB 8331-3 EN

Operation

6
6.1

Operation
Device overview and operating controls

Actuating shaft

Fig. 30: Operating controls

EB 8331-3 EN

25

Start-up

7

Start-upOnce the actuator has been mounted correctly and the wiring
has been performed as described in Chapter 5, the electric
actuator is ready for use and can be controlled by a three-step
signal (see Chapter 3.4).

7.1

1
18
21

Intermediate gear
Adjustment gear
Contact cam(17)

Adjusting the limit contacts
Note

To undo the screws on the housing cover, use a POZIDRIV® PZ2
screwdriver to get enough hold on the screw heads.

Fig. 33: Limit contact board (17)Mechanical limit contacts
1. Undo screws on housing cover and remove the housing
cover from the actuator.
2. Connect supply voltage.
3. Move the actuator stem, using manual override or the'manual level' operating mode, to the point at which thecontact should react.
4. Use the 4 mm hex wrench to turn spindle of the adjustment
gears (18) for the upper limit contact or for the lower
limit contact until the associated contact cam on the cam
holder (20) triggers the switch contact of the upper or lower
microswitch on the terminal board (17).
5. Replace the housing cover. Briefly turn the fastening screws
counterclockwise with a screwdriver to center them. Thenfasten down the cover by tightening the screws.
19

20

19

Actuator stem
Retracted

Actuator stem
Extended

Fig. 31: Contact cam and switch carrier
19
20

Contact cam
Cam holder
18

21

1
B

With actuator stem retracted
18

21

1

Fig. 34: Inside view · Retrofitting limit contacts
1

Intermediate gear2

Spindle gear3

Serrated ring4

Tension spring

8

Spacer11

Spindle12

Actuator board

13

Bearing sleeve

17

Terminal board

18

Adjustment gear

21

Contact cam unit

7.2

Adjusting the resistance transmitter

B

The gears of the resistance transmitters (22 and 23, see Fig. 35)
must be put onto their shafts to correspond with the rated travelof the valve. The rated travel inscription 'A' for 30 mm rated
travel or 'B' for 15 mm rated travel must be legible. If this is not
the case, pull both potentiometer gears off their shafts and put
them back on again with the reverse side of the wheel facing
upwards, ensuring they are aligned fairly flush with the potentiometer shaft.

With actuator stem extended
Fig. 32: Contact cam unit

26

EB 8331-3 EN

Start-up

Fig. 35: Zero adjustment

Legend for "Fig. 35: Zero adjustment"
22

Gear of potentiometer 1

22.1 Shaft of potentiometer 1
23

Gear of potentiometer 2

23.1 Shaft of potentiometer 2

Zero adjustment
1. Use the motor or manual override to move the valve to thedesired end position.
2. Use a screwdriver to adjust the potentiometer shafts (22.1)
and (23.1).
3. Calibrate the resistance transmitters using an ohmmetercorrespondingly.
Actuator stem extends:
Terminals 81/82 = 0 Ω
Terminals 91/93 = 0 Ω
Actuator stem retracts:
Terminals 81/83 = 0 Ω
Terminals 91/92 = 0 Ω

EB 8331-3 EN

27

Operation

8

Operation

8.1.2

After connecting the supply voltage, the actuator is ready foruse.
The actuator stem follows the signal applied to the input
terminals. The stem moves in the direction depending on which
terminal the signal is applied to.

8.1

Special version with handwheel

The additional handwheel is used for mechanical override in
the special version of the electric actuator with handwheel (seeFig. 37).

Manual mode

8.1.1

Mechanical override

To operate the manual override, place a 4 mm hex wrench on
the red actuator shaft located at the side of the housing (seeFig. 36).
Turn the hex wrench clockwise to move the actuator in 'aL'
direction and counterclockwise to move it in the 'eL' direction.
The hex wrench is included in the scope of delivery. It is
attached to the bottom of the housing.

Actuating shaft

Fig. 37: Special version with handwheeleL

aL
Fig. 36: Operating controls

Note
Manual override is only possible in actuators with failsafe action when the supply voltage (terminals L and N) is
connected.

28

EB 8331-3 ENMalfunctions

9

Malfunctions

9.1

Troubleshooting_ See Table 5.
Note
Contact SAMSON's After-sales Service for malfunctions not listed in the table.
Table 5: Troubleshooting
Malfunction

Possible reasons

Recommended action

Actuator stem does not move.

Actuator is blocked.

_ Check attachment.
_ Remove the blockage.

Actuator stem does not move through thewhole range.

9.2

No or incorrect supply voltage
connected.

_ Check the supply voltage and connections.

No or incorrect supply voltage
connected.

_ Check the supply voltage and connections.

Emergency action

The valve, on which the electric actuator with fail-safe action is
mounted, is moved to its fail-safe position upon supply voltage
failure (see Chapter 3).
Plant operators are responsible for emergency action to betaken in the plant.
Tip
Emergency action in the event of valve failure is described in
the associated valve documentation.

EB 8331-3 EN

29

Servicing

10 Servicing
The work described in this chapter is to be performed only by
personnel appropriately qualified to carry out such tasks.
Note
The electric actuator was checked by SAMSON before it left thefactory.
–

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.

–

Only use original spare parts by SAMSON, which comply
with the original specifications.

The actuator requires no maintenance.
SAMSON recommends inspection and testing according to the following table:
Table 6: Recommended inspection and testing
Inspection and testing

Action to be taken in the event of a negative result

Check the markings, labels and nameplates on the device for
their readability and completeness.

_ Immediately renew damaged, missing or incorrect
nameplates or labels.
_ Clean any inscriptions that are covered with dirt and are
illegible.

Check the electric wiring.

_ Tighten any loose terminal screws (see Chapter 5.5).
_ Renew damaged wires.

30

EB 8331-3 EN

Decommissioning

11 Decommissioning
The work described in this chapter is to be performed only by
personnel appropriately qualified to carry out such tasks.
!

DANGER

Risk of fatal injury due to electric shock.
_ Before disconnecting live wires at the device, disconnect the
supply voltage and protect it against unintentional reconnection.
!

WARNING

Risk of personal injury due to residual process medium in thevalve.
While working on the valve, residual medium can flow out ofthe valve and, depending on its properties, cause personal
injury, e.g. (chemical) burns.
_ Wear protective clothing, safety gloves and eye protection.
!

WARNING

Risk of burn injuries due to hot or cold components andpipeline.
Valve components and the pipeline may become very hot orcold. Risk of burn injuries if touched.
_ Allow components and pipeline to cool down or warm up toambient temperature.
_ Wear protective clothing and gloves.
To decommission the electric actuator for repair work or disassembly, proceed as follows:_ Put the control valve out of operation. See associated valve
documentation.
_ Disconnect the supply voltage and protect it against unintentional reconnection.
_ Make sure that a signal from the controller cannot act upon
the actuator.
Note
For versions with “Actuator stem extends” fail-safe action, thesupply voltage must remain connected to prevent the actuator
stem extending by itself.
_ Actuator with fail-safe action move to the defined fail-safe
position after the supply voltage is switched off.

EB 8331-3 EN

31

Removal

12 Removal

Actuator with “Actuator stem retracts” fail-safe action

The work described in this chapter is to be performed only by
personnel appropriately qualified to carry out such tasks.

2. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.

!

DANGER

Risk of fatal injury due to electric shock.
_ Before disconnecting live wires at the device, disconnect the
supply voltage and protect it against unintentional reconnection.
!

WARNING

Risk of personal injury due to hot components.
_ If necessary, allow the pipeline and valve components tocool down.
!

WARNING

Risk of personal injury due to residual process medium in thevalve.
While working on the valve, residual medium can flow out ofthe valve and, depending on its properties, cause personal
injury, e.g. (chemical) burns.
_ Wear protective clothing, safety gloves and eye protection.

12.1 Construction with integrated yoke
Actuator without fail-safe action
1. Check that the actuator is de-energized.
2. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.
3. Disconnect and remove the wires of the connecting lines at
the actuator.
4. Retract actuator stem as described in Chapter 8.1.1.
5. Undo the stem connector parts between the plug andactuator stems.
6. Loosen the nut at the yoke.
7. Lift the actuator off the valve.

1. Check that the actuator is de-energized.

3. Disconnect the wires of the connecting lines at the actuator.
4. Remove the connecting lines.
5. Undo the stem connector parts between the plug andactuator stems.
6. Loosen the nut at the yoke.
7. Lift the actuator off the valve.

12.2 Construction with ring nut
Actuator without fail-safe action
1. Check that the actuator is de-energized.
2. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.
3. Disconnect the wires of the connecting lines at the actuator.
4. Remove the connecting lines.
5. Retract actuator stem as described in Chapter 8.
6. Undo the stem connector parts between the plug andactuator stems.
7. Undo the top ring nut or hex nut.
8. Lift the actuator off the valve.
Actuator with “Actuator stem extends” fail-safe action
1. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.
2. Retract actuator stem as described in Chapter 8.
3. Undo the stem connector parts between the plug andactuator stems.
4. Undo the top ring nut or hex nut.
5. Lift the actuator off the valve.
6. Disconnect the supply voltage and protect it against unintentional reconnection.
The actuator stem moves to the fail-safe position.

Actuator with “Actuator stem extends” fail-safe action

7. Disconnect the wires of the connecting lines at the actuator.

1. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.

8. Remove the connecting lines.

2. Retract actuator stem as described in Chapter 8.1.1.
3. Undo the stem connector parts between the plug andactuator stems.
4. Loosen the nut at the yoke.
5. Lift the actuator off the valve.
6. Disconnect the supply voltage and protect it against unintentional reconnection.
The actuator stem moves to the fail-safe position.
7. Disconnect the wires of the connecting lines at the actuator.
8. Remove the connecting lines.

32

Actuator with “Actuator stem retracts” fail-safe action
1. Check that the actuator is de-energized.
2. Make sure that a signal from the controller cannot act upon
the actuator. If necessary, disconnect the wires connecting
the controller.
3. Disconnect the wires of the connecting lines at the actuator.
4. Remove the connecting lines.
5. Undo the stem connector parts between the plug andactuator stems.
6. Undo the top ring nut or hex nut.
7. Lift the actuator off the valve.

EB 8331-3 ENRepair

13 RepairIf the actuator does not function properly according to how it
was originally sized or does not function at all, it is defective
and must be repaired or exchanged.
!

NOTICE

Risk of actuator damage due to incorrect service or repair
work.
_ Do not perform any repair work on your own.
_ Contact SAMSON's After-sales Service for service andrepair work.
!

NOTICE

Risk of actuator damage due to incorrect service or repair
work.
_ Do not perform any repair work on your own.
_ Contact SAMSON's After-sales Service for service andrepair work.

13.1 Returning the actuator to SAMSONDefective actuators can be returned to SAMSON for repair.
Proceed as follows to return devices:
1. Remove the electric actuator from the valve (seeChapter 12).
2. Proceed as described on our website at www.samsongroup.com > SERVICE > After-sales Service > Returning
goods.
Note
Further information on returned devices and how they arehandled can be found at:www.samsongroup.com > Service > After-sales Service

EB 8331-3 EN

33

Disposal

14 Disposal
SAMSON is a producer registered at the following
European institution https://www.ewrn.org/
national-registers/national-registers.
WEEE reg. no.: DE 62194439/FR 025665_ Observe local, national and international refuse regulations.
_ Do not dispose of components, lubricants and hazardous
substances together with your other household waste.
Note
SAMSON can provide you with a recycling passportaccording to PAS 1049 on request. Simply e-mail us ataftersalesservice@samsongroup.com giving details of yourcompany address.
Tip
On request, SAMSON can appoint a service provider todismantle and recycle the product as part of a distributor takeback scheme.

34

EB 8331-3 EN

Certificates

15 Certificates
The following certificates are included on the next pages:–

EU declaration of conformity–

EC type examination certificate–

UKCA declaration of conformity–

TR CU certificate

The certificate shown was up to date at the time of publishing.
The latest certificate can be found on our website at:www.samsongroup.com > Products > Actuators > 3374

15.1 Information on the UK sales region
The following information corresponds to the Pressure
Equipment (Safety) Regulations 2016, STATUTORY INSTRUMENTS, 2016 No. 1105 (UKCA marking). It does not apply to
Northern Ireland.
Importer
SAMSON Controls Ltd
Perrywood Business Park
Honeycrock Lane
Redhill, Surrey RH1 5JQ
Phone: +44 1737 766391
E-mail: sales-uk@samsongroup.com
Website: uk.samsongroup.com

EB 8331-3 EN

35

EU Konformitätserklärung / EU Declaration of Conformity /Déclaration UE de conformité

Die alleinige Verantwortung für die Ausstellung dieser Konformitätserklärung trägt der Hersteller/
This declaration of conformity is issued under the sole responsibility of the manufacturer/
La présente déclaration de conformité est établie sous la seule responsabilité du fabricant.
Für das folgenden Produkte / For the following product/ Nous certifions que les produit

Elektrischer Stellantrieb / Electric Actuator / Servomoteur électrique
Typ/Type/Type 3374
wird die Konformität mit den einschlägigen Harmonisierungsrechtsvorschriften der Union bestätigt /the conformity with the relevant Union harmonisation legislation is declared with/sont conformes à la législation applicable harmonisée de l'Union:

EMC 2014/30/EU

EN 61000-6-2:2005, EN 61000-6-3:2007/A1:2011,
EN 61326-1:2013

LVD

EN 60730-1:2011, EN 61010-1:2010/A1:2019

2014/35/EU

RoHS 2011/65/EU

EN IEC 63000:2018

Hersteller / Manufacturer / Fabricant:
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3D-60314 Frankfurt am Main
Deutschland/Germany/Allemagne
Frankfurt / Francfort, 2022-10-05
Im Namen des Herstellers/ On behalf of the Manufacturer/ Au nom du fabricant.

Marcus Miertz

Gert Nahler

Senior Vice President Sales and Marketing

Director Automation Technology

SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · D 60314 Frankfurt am Main
Fon: +49 69 4009-0 · Fax: +49 69 4009-1507 · E-Mail: samson@samsongroup.com · Internet: www.samsongroup.com

Revision 08

This declaration of conformity is issued under the sole responsibility of the manufacturer.
For the following product:
Electric Actuator Type 3374
the conformity with the following relevant UK regulatory requirements is declared with:UK Regulation / Statutory Instrument

Designated Standard

SI 2016 No. 1091

EN 61000-6-2:2005
EN 61000-6-3:2007+A1:2011
EN 61326-1:2013

The Electromagnetic Compatibility Regulations 2016

SI 2016 No. 1101
The Electrical Equipment (Safety) Regulations 2016

EN 60730-1:2011
EN 61010-1:2010/A1:2019

SI 2012 No. 3032

EN IEC 63000:2018

The Restriction of the Use of Certain Hazardous Substancesin Electrical and Electronic Equipment Regulations 2012

Manufacturer:
SAMSON AKTIENGESELLSCHAFT
Weismuellerstrasse 360314 Frankfurt am Main
GermanyFrankfurt am Main, 2022-12-14
Signed for and behalf of the manufacturer:

Fabio Roma

Sebastian Krause

Vice President Smart Products & Components

Director Development Valves & Actuators

Revision 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismuellerstrasse 3 · 60314 Frankfurt am Main, Germany

Page 1 of 1

Konformitätserklärung für eine vollständige Maschinenach Anhang II, Absatz 1.A. der Richtlinie 2006/42/EG
Für folgendes Produkt:

Elektrisches Stellventil Typ 3214/XXXX bestehend aus Ventil Typ 3214 und Antrieb
Typ 3374, Typ 3274 oder Typ 3375
Wir, die SAMSON AG, erklären, dass die oben genannte Maschine allen einschlägigen Anforderungen der Maschinenrichtlinie 2006/42/EG entspricht.
Produktbeschreibung siehe:
Elektrische Stellventile Typ 3214/3374, 3214/3274, 3214/3375:
Einbau- und Bedienungsanleitung EB 5868-1
Folgende technischen Normen und/oder Spezifikationen wurden angewandt:
VCI/VDMA/VGB – Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für Armaturen,
Mai 2018
VCI/VDMA/VGB – Zusatzdokument zum „Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für Armaturen vom Mai 2018“, Stand Mai 2018 in Anlehnung an
DIN EN ISO 12100:2011-03
Bemerkung:Bestehende Restrisiken der Maschine sind den Angaben in der Einbau- und Bedienungsanleitung
von Ventil und Antrieb sowie den in der Einbau- und Bedienungsanleitung aufgeführten, mitgeltenden Dokumenten zu entnehmen.

Für die Zusammenstellung der technischen Unterlagen ist bevollmächtigt:
SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 20. October 2023

ppa. Norbert Tollas
Senior Vice President
Global Operations

i.V. Peter Scheermesser
Director
Product Maintenance & Engineered Products

Revision 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main

Seite 1 von 1

Declaration of Conformity of Final Machineryin accordance with Annex II, section 1.A. of the Directive 2006/42/EC
For the following product:

Type 3214/XXXX-X Electric Control Valve consisting of Type 3214 Valve and
TROVIS 5724-X, TROVIS 5725-X, Type 5824, Type 5825, Type 5827, Type 3274 orType 3374 Actuator
We hereby declare that the machinery mentioned above complies with all applicable requirements
stipulated in Machinery Directive 2006/42/EC.
For product descriptions refer to:Type 3214/… Electric and Pneumatic Control Valves:
Mounting and Operating Instructions EB 5868/5869
Referenced technical standards and/or specifications:
VCI, VDMA, VGB: "Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für Armaturen,
Mai 2018" [German only]
VCI, VDMA, VGB: "Zusatzdokument zum Leitfaden Maschinenrichtlinie (2006/42/EG) –Bedeutung für Armaturen vom Mai 2018" [German only], based on
DIN EN ISO 12100:2011-03
Comment:
Information on residual risks of the machinery can be found in the mounting and operating
instructions of the valve and actuator as well as in the referenced documents listed in the mounting
and operating instructions.

Persons authorized to compile the technical file:
SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 10 October 2023

Norbert Tollas
Senior Vice President
Global OperationsPeter Scheermesser
Director
Product Maintenance & Engineered Products

Revision no. 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany

Page 1 of 1Appendix

16 Appendix
16.1 Parts for retrofitting and accessories
Table 7: Parts for retrofitting and accessories
Mechanical limit contacts

Order no. 1402-0898

Set with three cable glands M20x1.5 with metal nut (A/F 23/24)

Order no. 1400-8828

Mounting kit V2001

Order no. 1400-9515

Spacer to mount the actuator on Type 3323 Valve (DN 65 to 80)

Order no. 0340-3031

Yoke to mount the actuator on Type 3260 Valve (DN 65 to 80)

Order no. 1890-8696

Yoke to mount the actuator on Type 3260 Valve (DN 100 to 150)

Order no. 1400-8822

Basic unit for limit contacts and/or resistance transmitters

Order no. 1400-8829

Resistance transmitters

See Table 8.

Gear wheel for resistance transmitter PCB

Order no. 1992-5885

Table 8: Resistance transmitters · Selecting the actuator board 1
Supply voltage
230 V, 50 Hz
24 V, 50 Hz

1

44Type 3374
Standard

Order no.:Faster motor

Order no.:Standard

Order no.:Faster motor

Order no.:

-10

-11

-15

-17

1180-9601
1180-9604

-26

-31

-36

-25

-27

-35

1180-9607–

1180-9603
1180-9606-21

1180-9610–

1180-9609–

1180-9612–

Two gear wheels (order no. 1992-5885) are additionally required for a retrofit; the basic unit (1400-8829) is additionallyrequired for the version without limit contacts and for a retrofit.
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Appendix

16.2 After-sales service
Contact our after-sales service for support concerning service orrepair work or when malfunctions or defects arise.
You can reach our after-sales service at the following e-mailaddress.
aftersalesservice@samsongroup.com
The addresses of SAMSON AG, its subsidiaries, representatives
and service facilities worldwide can be found on our website atwww.samsongroup.com or in SAMSON product catalogs.
Please submit the following details:–

Type designation–

Material number–

Serial number

EB 8331-3 EN

45

Appendix46

EB 8331-3 EN

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
samson@samsongroup.com · www.samsongroup.com

2024-06-06 | English |EB 8331-3 EN