Samson 43-3 Service manual

Translation of original instructions
EB 2173 EN
Type43-3 Temperature Regulator
Self-operated Regulators
Edition July 2023
Type43-3 Temperature Regulator with Type2430 Control Thermostat

Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices. The images shown in
these instructions are for illustration purposes only. The actual product may vary.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
([e-mail]).
The mounting and operating instructions for the devices are included
in the scope of delivery. The latest documentation is available on our
website at www.samsongroup.com > Service & Support > Downloads >
Documentation.
Definition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
EB 2173 EN

Contents
EB 2173 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-4
1.2 Notes on possible personal injury ................................................................1-5
1.3 Notes on possible property damage.............................................................1-6
2 Markings on the device ..............................................................................2-1
2.1 Valve nameplate .........................................................................................2-1
2.2 Nameplate of control thermostat ..................................................................2-1
2.3 Location of the nameplate on valve and control thermostat .............................2-2
2.4 Material identication number .....................................................................2-2
3 Design and principle of operation ...............................................................3-1
3.1 Additional ttings........................................................................................3-3
3.2 Technical data ............................................................................................3-5
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the regulator ..................................................4-1
4.3 Transporting and lifting the regulator............................................................4-1
4.4 Storing the regulator ...................................................................................4-2
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-3
5.3 Installation..................................................................................................5-5
5.3.1 Installing the regulator.................................................................................5-5
5.3.2 Cleaning the pipeline ..................................................................................5-6
5.4 Testing the regulator ....................................................................................5-6
5.4.1 Leakage .....................................................................................................5-7
5.4.2 Pressure test................................................................................................5-8
5.5 Insulation ...................................................................................................5-8
6 Start-up .....................................................................................................6-1
6.1 Start-up and putting the device back into operation .......................................6-2
6.2 Starting up the plant....................................................................................6-2
7 Operation..................................................................................................7-1
7.1 Adjusting the temperature set point...............................................................7-1
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.1.1 Temperature regulators for heating applications.............................................8-1
8.1.2 Temperature regulators for cooling applications.............................................8-3

Contents
EB 2173 EN
8.2 Emergency action .......................................................................................8-5
9 Servicing....................................................................................................9-1
9.1 Preparing the valve for service work.............................................................9-2
9.2 Installing the regulator after service work ......................................................9-2
9.3 Service work...............................................................................................9-2
9.4 Cleaning the seat and plug..........................................................................9-4
9.5 Ordering spare parts and operating supplies ................................................9-4
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
11.1 Removing the control thermostat.................................................................11-1
11.2 Removing the valve from the pipeline..........................................................11-1
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Certicates...............................................................................................14-1
15 Annex......................................................................................................15-1
15.1 Tightening torques.....................................................................................15-1
15.2 Tools ........................................................................................................15-1
15.3 Lubricants.................................................................................................15-1
15.4 Spare parts and accessories ......................................................................15-1
15.5 After-sales service.....................................................................................15-2

EB 2173 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type 43-3 Regulator is a temperature regulator with three-way valve for mix-
ing and diverting service. The regulator consists of a Type2433 Valve and a Type2430
Control Thermostat. The valve and control thermostat are delivered separately and must be
assembled according to the instructions in these mounting and operating instructions.
The self-operated regulator is used to control the temperature in the plant to the adjusted set
point. The Type43-3 Regulator is used to control water.
The regulator is designed to operate under exactly dened conditions (e.g. operating pres-
sure, process medium, temperature). Therefore, operators must ensure that the regulator is
only used in operating conditions that meet the specications used for sizing the regulator at
the ordering stage. In case operators intend to use the controllers in applications or condi-
tions other than those specied, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
ÎRefer to the technical data and nameplate for limits and elds of application as well as
possible uses.
Reasonably foreseeable misuse
The regulators are not suitable for the following applications:
−Use outside the limits dened during sizing and by the technical data
−Use outside the limits dened by the additional ttings mounted on the regulator
Furthermore, the following activities do not comply with the intended use:
−Use of non-original spare parts
−Performing service and repair work not described
Safety features
The Type43-3 Temperature Regulator does not have any special safety features.
Qualications of operating personnel
The regulator must be mounted, started up, serviced and repaired by fully trained and quali-
ed personnel only; the accepted industry codes and practices must be observed. According
to these mounting and operating instructions, trained personnel refers to individuals who are

1-2 EB 2173 EN
Safety instructions and measures
able to judge the work they are assigned to and recognize possible hazards due to their spe-
cialized training, their knowledge and experience as well as their knowledge of the applica-
ble standards.
Personal protective equipment
We recommend checking the hazards posed by the process medium being used (e.g.
uGESTIS (CLP) hazardous substances database). Depending on the process medium and/
or the activity, the protective equipment required includes:
ÎProtective clothing, safety gloves and eye protection in applications with hot, cold and/or
corrosive media
ÎWear hearing protection when working near the valve. Follow the instructions given by
the plant operator.
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions, conversions or other modications of the product are not authorized by SAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example. Fur-
thermore, the product may no longer meet the requirements for its intended use.
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 regulator by the process medium, the operating
pressure or by moving parts by taking appropriate precautions. Plant operators and operat-
ing personnel must observe all hazard statements, warnings and caution notes in these
mounting and operating instructions.
Hazards resulting from the special working conditions at the installation site of the regulator
must be identied in a risk assessment and prevented through the corresponding safety in-
structions drawn up by the operator.
We also recommend checking the hazards posed by the process medium being used (e.g.
uGESTIS (CLP) hazardous substances database).
ÎObserve safety measures for handling the device as well as re prevention and explosion
protection measures.
These mounting and operating instructions deals with the standard version of the device.
Components of the device that differ to those used for the standard version described in this
document can be exchanged with other certain SAMSON components. The residual hazards
of these components are described in the associated mounting and operating instructions
(see documents listed under 'Referenced documentation').

EB 2173 EN 1-3
Safety instructions and measures
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations. Opera-
tors are obliged to provide these mounting and operating instructions as well as the refer-
enced documents to the operating personnel and to instruct them in proper operation. Fur-
thermore, operators must ensure that operating personnel or third parties are not exposed to
any danger.
Operators are additionally responsible for ensuring that the limits for the product dened in
the technical data are observed. This also applies to the start-up and shutdown procedures.
Start-up and shutdown procedures fall within the scope of the operator's duties and, as such,
are not part of these mounting and operating instructions. SAMSON is unable to make any
statements about these procedures since the operative details (e.g. differential pressures and
temperatures) vary in each individual case and are only known to the operator.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
well as the referenced documents and observe the specied hazard statements, warnings
and caution notes. Furthermore, operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.
Referenced standards, directives and regulations
The DVGW type examination certicate is included in the 'Certicates' section.
According to the ignition hazard assessment performed in accordance with Clause5.2 of
ISO80079-36, the non-electrical regulators do not have their own potential ignition source
even in the rare incident of an operating fault. As a result, they do not fall within the scope of
Directive 2014/34/EU.
ÎFor connection to the equipotential bonding system, observe the requirements specied in
Clause6.4 of EN60079-14 (VDE0165-1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Mounting and operating instructions for

1-4 EB 2173 EN
Safety instructions and measures
e.g. Type2430 Control Thermostat uEB2430
e.g. Type 2403 Safety Temperature Monitor (STM) uEB2183
e.g. Type 2439 Safety Temperature Limiter (STL) uEB2185
e.g. Type1NI Strainer uEB1010
e.g. Type2NI Strainer uEB1015
−Data sheets for
e.g. Accessories: Double adapter·Manual adjuster·Intermediate insu-
lating piece uT2176
e.g. Typetested safety devices uT2181
e.g. Type 2403 Safety Temperature Monitor (STM) uT2183
e.g. Type 2439 Safety Temperature Limiter (STL) uT2185
e.g. Type1NI Strainer uT1010
e.g. Type2NI Strainer uT1015
−Mounting and operating instructions as well as data sheets for additional ttings
(e.g. shut-off valves, pressure gauges etc.).
1.1 Notes on possible severe personal injury
DANGER
!
Risk of bursting in the regulator.
Regulators and pipelines are pressure equipment. Impermissible pressure or improper
opening of the regulator can lead to regulator components bursting.
ÎObserve the maximum permissible pressure for regulator and plant.
ÎBefore starting any work on the regulator, depressurize all plant sections affected
as well as the regulator.
ÎDrain the process medium from all the plant sections affected as well as the regula-
tor.

EB 2173 EN 1-5
Safety instructions and measures
1.2 Notes on possible personal injury
WARNING
!
Damage to health relating to the REACH regulation.
If a SAMSON device contains a substance listed as a substance of very high concern
on the candidate list of the REACH regulation, this is indicated on the SAMSON deliv-
ery note.
ÎInformation on safe use of the part affected. uwww.samsongroup.com/en/
about-samson/material-compliance/reach-regulation/
Risk of personal injury due to incorrect operation, use or installation as a result of
information on the regulator being illegible.
Over time, markings, labels and nameplates on the regulator may become covered
with dirt or become illegible in some other way. As a result, hazards may go unno-
ticed and the necessary instructions not followed. There is a risk of personal injury.
ÎKeep all relevant markings and inscriptions on the device in a constantly legible
state.
ÎImmediately renew damaged, missing or incorrect nameplates or labels.
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, regulator components and pipelines may get very
hot or cold and cause burn injuries.
ÎAllow components and pipelines to cool down or warm up to the ambient tempera-
ture.
ÎWear protective clothing and safety gloves.
Risk of hearing loss or deafness due to loud noise.
The noise emissions depend on the valve version, plant facilities and process medium.
ÎWear hearing protection when working near the valve. Follow the instructions giv-
en by the plant operator.

1-6 EB 2173 EN
Safety instructions and measures
WARNING
!
Risk of personal injury due to residual process medium in the regulator.
While working on the regulator, residual process medium can escape and, depending
on its properties, may lead to personal injury, e.g. (chemical) burns.
ÎIf possible, drain the process medium from all the plant sections affected and the
regulator.
ÎWear protective clothing, safety gloves and eye protection.
1.3 Notes on possible property damage
NOTICE
!
Risk of regulator damage due to incorrectly attached slings.
ÎDo not attach load-bearing slings to the regulator.
Risk of regulator damage due to unsuitable medium properties.
The regulator is designed for a process medium with dened properties.
ÎOnly use the process medium specied for sizing the equipment.
Risk of regulator damage due to contamination (e.g. solid particles) in the pipeline.
The plant operator is responsible for cleaning the pipelines in the plant.
ÎFlush the pipelines before start-up.
Risk of regulator damage due to the use of unsuitable lubricants.
The lubricants to be used depend on the regulator material. Unsuitable lubricants may
corrode and damage surfaces.
ÎOnly use lubricants approved by SAMSON.
When in doubt, consult SAMSON.

EB 2173 EN 1-7
Safety instructions and measures
NOTICE
!
Risk of leakage and regulator damage due to excessively high or low tightening
torques.
Observe the specied torques when tightening regulator components. Excessive tight-
ening torques lead to parts wearing out more quickly. Parts that are too loose may
cause leakage.
ÎObserve the specied tightening torques (see 'Tightening torques' in Annex).
Risk of excess pressure damaging plant sections due to construction-related seat
leakage through the regulator.
ÎAlways install a safety device (e.g. safety excess pressure valve or safety relief
valve) in the plant.
Risk of regulator damage due to the use of unsuitable tools.
Certain tools are required to work on the regulator.
ÎOnly use tools approved by SAMSON.
When in doubt, consult SAMSON.
Risk of the process medium being contaminated through the use of unsuitable lubri-
cants and/or contaminated tools and components.
ÎKeep the regulator and the tools used free from solvents and grease.
ÎMake sure that only suitable lubricants are used.
Incorrect control due to the formation of ice on the regulator.
Medium temperatures below 0°C may cause ice to form on the regulator, depending
on the air humidity. This may affect, in particular, the functioning of the plug or control
thermostat stem guide.
ÎPrevent the formation of ice by taking appropriate precautions (e.g. enclosure,
trace heater etc.). The plant operator is responsible for selecting and implementing
appropriate precautions. See the 'Installation' section.

1-8 EB 2173 EN
Safety instructions and measures
NOTICE
!
Risk of irreparable regulator damage caused by the regulator components being
taken apart.
The control thermostat is an inseparable hydraulic unit consisting of a control thermo-
stat, capillary tube and temperature sensor. If these components are dismantled (e.g.
removal of the capillary tube), the regulator will be irreparably damaged and will no
longer be able to fulll its control task.
ÎDo not dismantle the regulator.
ÎOnly perform allowed activities on the regulator.
ÎContact SAMSON's After-sales Service before replacing spare parts.
SAMSON's After-sales Service can support you concerning lubricant, tightening torques
and tools approved by SAMSON.
Note

EB 2173 EN 2-1
Markings on the device
2 Markings on the device
2.1 Valve nameplate
1 Type designation
2Model number
3Material number and device index
4 Order number or year of manufacture
5 KVS/CV
6Perm. temperature in °C
7Pressure rating (valve)
8Mixing/diverting valve (symbol)
9Max. permissible differential pressure
∆p
SAMSON 1
234
5 6
789
The arrow indicating the direction of ow is cast into the valve body.
Fig.2-1: Valve nameplate
2.2 Nameplate of control thermostat
2004
0062
23
5
6
4
1
1Model number
2 Type designation
3Material number
4 CE marking
5Temperature range in °C and °F
6Register number (type test according to
DINEN14597)
Fig.2-2: Nameplate of the control thermostat

2-2 EB 2173 EN
Markings on the device
2.3 Location of the nameplate
on valve and control ther-
mostat
Location of the
nameplate
Top view
Type2430
Fig.2-3: Locations of the nameplates on the body
2.4 Material identication
number
The material is indicated on the body of the
Type2433 Valve. Specifying the material
number, you can contact us to nd out more
details. The material number is specied on
the nameplate (“Material number and device
index”, 3).
For more details on the nameplate, see sec-
tion2.1 and section2.2.

EB 2173 EN 3-1
Design and principle of operation
3 Design and principle of
operation
ÎSee Fig.3-1
The regulator consists of a Type2433 Three-
way Valve (designed as mixing or diverting
valve) and a Type2430 Control Thermostat
with set point adjuster, a capillary tube and
temperature sensor.
A temperature sensor operating according to
the adsorption principle is used as standard.
Details on the Type2430 Control Thermostat
with a temperature sensor operating accord-
ing to the vapor pressure principle can be
found in the mounting and operating instruc-
tions uEB2430.
The valve body is made of red brass or
spheroidal graphite iron.
The Type2430 Control Thermostat is at-
tached to the valve body (1) using the cou-
pling nut (5).
The temperature regulators work according
to the adsorption principle. The temperature
of the medium creates a pressure in the sen-
sor (48) which is proportional to the mea-
sured temperature. This pressure is trans-
ferred through the capillary tube (11) to the
operating element (12) and converted into a
positioning force. This force causes the pin of
the operating element (10) to move the plug
stem (4) with the plug (3). The plug is not
pressure-balanced.
By turning the set point adjuster (8), the
point of response is changed over the plug
Note
spring. As a result, the temperature set point
is changed.
Depending on its plug arrangement, the
three-way valve is either used for mixing or
diverting service.
In mixing valves, the process media to be
mixed enter at valve ports A and B. The
combined ow exits the valve at port AB.
When the temperature rises, port A opens
and port B closes.
In diverting valves, in contrast, the process
medium enters at the valve port AB and the
partial ows exit at ports A and B. When the
temperature rises, port A closes and port B
opens.
Version with safety thermostat
When a Type2439 or Type2403 Safety
Thermostat is attached to the valve or the
regulator, this combination functions as a
safety temperature limiter (TR/STL) or a safe-
ty temperature monitor (TR/STM).
Details in mounting and operating instruc-
tions
uEB2185 (STL); uEB2083 (STM).
Version with double adapter
The temperature regulator can be equipped
with a double adapter to connect an addi-
tional control thermostat to control a further
control variable.
See Data Sheet uT2176.

3-2 EB 2173 EN
Design and principle of operation
Mixing valve Diverting valve
A
B
AB
1
3
2
4
5
11
7
8
9
10
12
53
51
50
48
A
B
AB
Plug arrangement DN32 to 50
Mixing valve Diverting valve
1Valve body
2 Seat
3 Plug
4 Plug stem
5Coupling nut
7 Set point spring
8Set point adjuster
9Operating bellows
10 Pin of operating
element
11 Capillary tube
12 Operating element
48 Temperature sensor
50 Thermowell (optional)
51 Packing
53 Screw
Fig.3-1: Functional diagram of regulator, DN15 to 25·G½ to 1

EB 2173 EN 3-3
Design and principle of operation
3.1 Additional ttings
Strainers
We recommend installing a SAMSON
strainer upstream of the valve in the ow
pipe. It prevents solid particles in the process
medium from damaging the regulator.
ÎDo not use the strainer to permanently
lter the process medium.
ÎSelect a strainer (mesh size) suitable for
the process medium.
Any impurities carried along by the process
medium may impair the proper functioning
of the regulator. We recommend installing a
strainer (e.g. SAMSON Type1NI) upstream
of the temperature regulator (uEB1010).
Thermometer
Install a thermometer to monitor the tem-
perature prevailing in the plant.
Shut-off valves
We recommend installing a shut-off valve
both in the ow pipe and the return ow
pipe.
Insulation
Regulators and the pipeline can be insulated
to reduce heat energy transfer.
Refer to the instructions in the 'Installation'
section.
Note
Version with handwheel
For the manual operation of the valve. The
manual adjuster can either be attached di-
rectly to the valve or at the double adapter
instead of a control thermostat.
See Data Sheet uT2176.
The Type43-3 Regulator is not a safety
valve. If necessary, a suitable overpressure
protection must be installed on site in the
plant section.
Note

3-4 EB 2173 EN
Design and principle of operation
Heating
B
AAB
B
AAB
AAB
B
B
AAB
Mixing valve
in the ow
pipe
In the return
ow pipe
Diverting
valve
in the ow
pipe
In the return
ow pipe
Flow pipe
Flow pipe
Flow pipe
Flow pipe
Return ow pipe
Return ow pipe
Return ow pipe
Return ow pipe
Cooling
B
AAB
B
AAB
AAB
B
B
AAB
Mixing valve
in the ow pipe
In the return
ow pipe
Diverting valve
in the ow pipe
Flow pipe Flow pipe
Flow pipe
Flow pipe
Return ow pipe
In the return
ow pipe
Return ow pipe
Return ow pipe
Return ow pipe
Fig.3-2: Arrangement of Type43-3 Temperature Regulator

EB 2173 EN 3-5
Design and principle of operation
3.2 Technical data
The regulator nameplate provides informa-
tion on the regulator version (see the 'Mark-
ings on the device' section).
More information is available in Data Sheet
uT2173.
Process medium and scope of application
Designed for mixing or diverting service in
heating or cooling installations The Type43-
3 Temperature Regulator is designed to
maintain the temperature at the control ther-
mostat sensor to the adjusted set point.
−Medium: water
−Max. temperature up to 150°C
−Temperature set points from 0 to 150 °C
−Valve sizes G½ to 1·DN15 to 50
−PN25
Testing according to DINEN14597
The Type43-3 Temperature Regula-
tor combined with the Type2439
Safety Temperature Limiter or the
Type2403 Safety Temperature Moni-
tor is tested according to DIN. The
registration number is available on
request.
Note
EC type examination
The DVGW type examination certicate is
included in the 'Certicates' section.
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the regulator version, plant
facilities, process medium and operating
conditions.
Temperature range
Depending on how the Type43-3 Regulator
is congured, it can be used up to max.
150°C. The minimum temperature is limited
by the seal material used in the regulator
(seeTable 3-1).
Dimensions and weights
Table 3-3 provides a summary of the dimen-
sions and weights. The lengths and heights
in the dimensional drawings are shown on
page3-8.

3-6 EB 2173 EN
Design and principle of operation
Table 3-1: Technical data · All pressures in bar (gauge)
Type 2433 Three-way Valve
Connection Female thread Male thread
Connection size G ½ ¾ 1 –
Valve size DN – 15 20 25 32 40 50
Medium Water
KVS coefcient 4 6.3 8 46.3 8 10 12.5 16
Pressure rating PN 25
Max. perm. differential pressure Δp in bar
Mixing valve Δp when p in B>p in A 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6 0.6
Δp when p in A>p in B 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6 0.6
Diverting valve Δp when AB to A or B 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6 0.6
Max. permissible valve temperature 150°C
Type2430 Control Thermostat
Set point range (continuously adjustable) 0 to 35°C, 25 to 70°C, 40 to 100°C, 50 to 120°C or
70 to 150°C
Capillary tube 2m (5m as special version)
Max. perm. excess temperature at sensor 50°C above the adjusted set point
Max. permissible ambient temperature 80°C
Permissible pressure at sensor/thermowell PN25/PN40
Max. perm. temperature range of medium 0 to +150°C (with separating piece: –15 to +150°C)
Table 3-2: Materials · Material numbers according to DIN EN
Type 2433 Three-way Valve
Body, seat Red brass (RG5) CC499K
Plug Brass, resistant to dezincication, CW617N (CuZn40) with EPDM soft seal
Valve spring Stainless steel 1.4310
Type2430 Control Thermostat
Set point adjuster PTFE, glass ber reinforced
Temperature
sensor
Capillary tube Copper
Thermowell Copper or stainless steel 1.4310