Samson 2213 Service manual

Mounting and
Operating Instructions
EB 2043 EN
Translation of original instructions
Edition January 2018
Self-operated Temperature Regulators
Type 2213 Safety Temperature Monitor
(STM)

2 EB 2043 EN
Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.
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
Department (aftersalesser[email protected]).
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.samson.de > Service & Support > Downloads > Documentation.
Denition 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

Contents
EB 2043 EN 3
1 Safety instructions and measures ...................................................................4
1.1 Notes on possible severe personal injury .........................................................6
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage................................................................8
2 Markings on the device .................................................................................9
2.1 Material number..........................................................................................10
3 Design and principle of operation ................................................................10
3.1 Technical data .............................................................................................12
3.2 Process medium and scope of application ......................................................12
4 Measures for preparation............................................................................16
4.1 Unpacking ..................................................................................................16
4.2 Transporting and lifting ................................................................................16
4.3 Storage.......................................................................................................17
4.4 Preparation for installation............................................................................17
5 Mounting and start-up.................................................................................18
5.1 Mounting the safety temperature monitor onto the valve ..................................18
5.2 Additionalttings.........................................................................................18
5.3 Temperature sensor and capillary tube...........................................................19
5.4 Electric signal transmitter ..............................................................................20
5.4.1 Retrottingandadjustingasignaltransmitter .................................................20
5.5 Combinationwithdifferentialpressureandowregulators..............................22
5.6 Start-up.......................................................................................................22
5.6.1 Gases and liquids ........................................................................................23
5.6.2 Steam .........................................................................................................23
6 Operation...................................................................................................23
6.1 Adjusting the limit temperature......................................................................23
6.2 Sensor failure ..............................................................................................23
6.3 Correcting the limit value dial........................................................................24
6.4 Fine adjustment of the limit temperature .........................................................24
7 Servicing.....................................................................................................25
7.1 Preparation for return shipment.....................................................................26
8 Malfunctions ...............................................................................................26
9 Decommissioning and disassembly ..............................................................28
9.1 Decommissioning.........................................................................................28
9.2 Disposal......................................................................................................29
10 Appendix....................................................................................................29
10.1 After-sales service and spare parts ................................................................29
10.2 Certicates ..................................................................................................29

4 EB 2043 EN
Safety instructions and measures
1 Safety instructions and measures
Intended use
TheType2213SafetyTemperatureMonitor(STM)withvalveisdesignedfortemperature
monitoring and control of the energy supply to heat generators (e.g. heat exchangers) by
closingthevalve.Theconnectionofanadditionalcontrolthermostat(e.g.Type2231)con-
verts the safety temperature monitor (STM) into a temperature regulator with safety tempera-
ture monitor (TR/STM).
Thedevicesaredesignedtooperateunderexactlydenedconditions(e.g.operatingpres-
sure, process medium, temperature). Therefore, operators must ensure that the devices are
onlyusedinoperatingconditionsthatmeetthespecicationsusedforsizingthedevicesat
the ordering stage. In case operators intend to use the devices in other applications or condi-
tionsthanspecied,contactSAMSON.
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.
ÎRefertothetechnicaldataandnameplateforlimitsandeldsofapplicationaswellas
possible uses.
Reasonably foreseeable misuse
Thedevicesarenotsuitableforuseoutsidethelimitsdenedduringsizingandbythetechni-
cal data. Furthermore, the following activities do not comply with the intended use:
−Use of non-original spare parts
−Performing service and repair work not described in these instructions
Qualications of operating personnel
The devices must be mounted, started up, serviced and repaired by fully trained and quali-
edpersonnelonly;theacceptedindustrycodesandpracticesaretobeobserved.Accord-
ing to these mounting and operating instructions, trained personnel refers to individuals who
areabletojudgetheworktheyareassignedtoandrecognizepossiblehazardsduetotheir
specializedtraining,theirknowledgeandexperienceaswellastheirknowledgeoftheappli-
cable standards.
Personal protective equipment
Werecommendcheckingthehazardsposedbytheprocessmediumbeingused(e.g.
uGESTIS(CLP)hazardoussubstancedatabase).

EB 2043 EN 5
Safety instructions and measures
ÎProvide protective equipment (e.g. safety gloves, eye protection) appropriate for the pro-
cess medium used.
ÎWear hearing protection when working near the valve.
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions,conversionsorothermodicationsoftheproductarenotauthorizedbySAMSON.
Theyareperformedattheuser'sownriskandmayleadtosafetyhazards,forexample.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
preventhazardsthatcouldbecausedinthedevicebytheprocessmedium,theoperating
pressureorbymovingpartsbytakingappropriateprecautions.Theymustobserveallhaz-
ard statements, warning and caution notes in these mounting and operating instructions, es-
pecially for installation, start-up and service work.
Wealsorecommendcheckingthehazardsposedbytheprocessmediumbeingused(e.g.
uGESTIS(CLP)hazardoussubstancedatabase).
ÎObservesafetymeasuresforhandlingthedeviceaswellasrepreventionandexplosion
protection measures.
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions as well as the
referenced documents to the operating personnel and to instruct them in proper operation.
Furthermore, the operator must ensure that operating personnel or third persons are not ex-
posed to any danger.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
wellasthereferenceddocumentsandobservethespeciedhazardstatements,warnings
and caution notes. Furthermore, the operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.

6 EB 2043 EN
Safety instructions and measures
Referenced standards and regulations
The devices comply with the requirements of the European Pressure Equipment Directive
2014/68/EU. Devices with a CE marking have an EU declaration of conformity, which in-
cludes information about the applied conformity assessment procedure. This EU declaration
ofconformityisincludedintheAppendixoftheseinstructions(seesection10.2).
Non-electric valve versions whose bodies are not lined with an insulating material coating do
not have their own potential ignition source according to the risk assessment stipulated in
EN13463-1:2009,section5.2,evenintherareincidentofanoperatingfault.Therefore,
such valve versions do not fall within the scope of Directive 2014/34/EU.
ÎForconnectiontotheequipotentialbondingsystem,observetherequirementsspeciedin
section6.4ofEN60079-14(VDE0165Part1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Mounting and operating instructions for valves, e.g.
uEB2111/2112/2113/2121/2123
−Mounting and operating instructions for the control thermostats, e.g. uEB2231
−Mounting and operating instructions for the safety temperature limiter, e.g. uEB2046
1.1 Notes on possible severe personal injury
DANGER
!
Risk of personal injury due to process medium escaping under pressure.
While removing the control thermostat/safety temperature monitor (STM)/safety tem-
peraturelimiter(STL)fromthevalve,thesealed-offvalveisopened.Residualprocess
medium will escape and, depending on its properties, may lead to personal injury,
e.g. (chemical) burns.
ÎDepressurizetheplant.
ÎFirst start up the regulator after mounting all parts.
ÎWear protective clothing, safety gloves and eyewear.

EB 2043 EN 7
Safety instructions and measures
DANGER
!
Risk of bursting in pressure equipment.
Valvesandpipelinesarepressureequipment.Improperopeningcanleadtovalve
components bursting.
ÎBeforestartinganyworkonthevalve,depressurizeallplantsectionsconcernedas
well as the valve.
ÎDrain the process medium from all the plant sections concerned as well as the
valve.
ÎWear personal protective equipment.
1.2 Notes on possible personal injury
WARNING
!
Risk of personal injury due to residual process medium in the valve and safety tem-
perature monitor.
While working on the valve or safety temperature monitor, residual process medium
can escape and, depending on its properties, may lead to personal injury, e.g. (chem-
ical) burns.
ÎIf possible, drain the process medium from all the plant sections concerned and the
valve.
ÎWear protective clothing, safety gloves and eyewear.
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, valve components and pipelines may get very hot
or cold and cause burn injuries.
ÎAllow components and pipelines to cool down or heat up.
ÎWear protective clothing and safety gloves.
Damage to health relating to the REACH regulation.
If a SAMSON device contains a substance which is listed as being a substance of very
high concern on the candidate list of the REACH regulation, this circumstance is indi-
cated on the SAMSON delivery note.
ÎInformation on safe use of the part affected,
see uhttp://www.samson.de/reach-en.html.

8 EB 2043 EN
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Risk of valve damage due to unsuitable medium properties.
Thevalveisdesignedforaprocessmediumwithdenedproperties.
ÎOnlyusetheprocessmediumspeciedforsizing.
Irreparable regulator damage caused by the regulator components being taken
apart.
The safety temperature monitor is an inseparable hydraulic unit consisting of a safety
thermostat, 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
nolongerbeabletofulllitsmonitoringandcontroltask.
ÎDo not dismantle the regulator.
ÎOnly perform allowed activities on the regulator.
ÎContact SAMSON's After-sales Service department before replacing spare parts.
Risk of valve 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.
ÎObserve the maximum permissible pressure for valve and plant.
Risk of damage to the valve or safety temperature monitor due to excessively high
or low tightening torques.
The connection between valve and safety temperature monitor must be tightened with a
certain tightening torque.
Excessively tightened torques lead to parts wearing out quicker. Parts that are too loose
may cause leakage.
ÎObservethespeciedtighteningtorques.

EB 2043 EN 9
Markings on the device
2 Markings on the device
Specications on
the dial housing
SAMSON
x
Gr. DN Made in Germany
bar
°C
bar
°C
123
5
67 8
4
1Type
2CongurationID
3Date
4Limitvaluerangein°Cand°F
5Register number (type test accord-
ingtoDINEN14597)
6Size
7Valvesize
8Pressure or temperature range
Specications on
the valve
DIN ange version
1Type
2CongurationID
3Index
4Order number/date
5KVScoefcient
8NominalsizeDN
9Nominal pressure PN
10 Perm.differentialpressureΔpinbar
11 Perm.temperaturein°C
12 Bodymaterial
ANSI ange version
1Type
2CongurationID
3Index
4Order number/date
5Valvesize
8Perm.differentialpressurepΔinpsi
9Perm.temperaturein°F
10 Bodymaterial
11 CVcoefcient
12 Pressure rating (Class)
SAMSON
DN
bar
Made in Germany
°C
T
bar
∆p
PN
Kvs
No
12
910 11
8
5
4
1
3
2
DIN
No
∆p
Made in Germany
Size
SAMSON psi
Npsi T°F Cv Cl
9
810 11 12
5
4
1
3
2
ANSI
Fig.1: Nameplates

10 EB 2043 EN
Design and principle of operation
3 Design and principle of oper-
ation
See Fig.2.
The safety temperature monitor (STM) oper-
ates according to the liquid expansion prin-
ciple. The temperature sensor (12), capillary
tube(9)andoperatingelement(8)arelled
with an expansion liquid.
The temperature-dependent change in vol-
ume of the liquid in the bulb sensor (12)
causes the piston in the operating element
(8) to move. As a result, the pin of the oper-
ating element (7) moves the plug stem (5)
with the plug (3). The temperature limit can
be adjusted by a key (10). This limit value is
indicated on the dial (11).
The safety temperature monitor closes the
valve when the temperature reaches the ad-
justed temperature limit. The safety tempera-
ture monitor resets itself automatically when
the temperature has fallen to a value of ap-
prox.5Kbelowtheadjustedlimit.
Fail-safe position
The spring mechanism in the operating ele-
ment is released when the capillary tube
breaks or when there is a leak in the sensor.
It moves the plug stem (5) with the plug (3)
over the pin (7) and closes and locks the
valve.
The adjusted limit temperature must have a
minimum temperature difference of 15K to
the set point of the temperature regulator.
Note
2.1 Material number
SpecifyingthecongurationID,youcancon-
tactustondoutwhichmaterialisused.The
congurationIDisspeciedonthename-
plate(2and3;congurationIDanddevice
index). For more details on the nameplate,
seeFig.1.

EB 2043 EN 11
Design and principle of operation
Fig.2: Type2422/2213 Safety Temperature Monitor (STM) with Type2422 Globe Valve
1Valvebody
2 Seat (exchangeable)
3 Plug
5 Plug stem
6Couplingnut(150Nmtighteningtorque)
7 Connecting piece with pin of the operating
element
8 Operating element with spring mechanism
8.1 Electric signal transmitter
8.2 Signal pin
8.3 Travel indicator
9 Capillary tube
10 Key to adjust limit value
11 Limitvaluedial
12 Temperature sensor (bulb sensor with ther-
mowell)
13 Leadingscrew(oncustomerrequest)
14 Dial housing
14
13
10
11
12
8
9
8.2
7
6
5
3
2
1
8.1
8.3

12 EB 2043 EN
Design and principle of operation
3.1 Technical data
3.2 Process medium and scope
of application
Safety temperature monitoring of the energy
supply for heat generators or heat exchang-
ers by closing the valve.
For limit signals from –10 to 120°C (14 to
248°F)·ValvesDN15 to 150 (NPS½ to
10) · PN16 to 40 (Class 150 to 300) · Max.
350°C (660°C)
TheType2213SafetyTemperatureMonitor
(STM) with a valve operates without auxilia-
ry energy and is designed for extended safe-
tyaccordingtoDINEN14597.Thevalveis
closed by a spring mechanism when the tem-
perature reaches the adjusted limit, when the
capillary tube breaks or when leakage oc-
curs in the sensor system. The devices are
automatically reset and put back into opera-
tion after the temperature has fallen below
the limit and the fault has been remedied.
When the safety temperature monitor is com-
binedwithaType2231to2235Control
Thermostat, make sure that there is a mini-
mumdifferenceofapproximately15Kbe-
tween the adjusted limit temperature of the
safety temperature monitor and the set point
temperature of the control thermostat.
Dimensions and weights
Fig.3providesasummaryofthedimensions
andweightsoftheType2213SafetyTem-
peratureMonitoraswellastheTypes2111,
2422,2118and2119Valves.Thelengths
and heights in the dimension diagrams are
shownonpage15 onwards.
Typetesting
The safety temperature monitor is tested by
theGermanTechnicalInspectorate(TÜV)ac-
cordingtoDINEN14597underthetype
designation 2213. The registration number
is available on request.
Further details and technical data of the
valves and control thermostats are listed in
the following mounting and operating in-
structions:
−Mounting and operating instructions for
valves, e.g.
uEB2111/2112/2113/2121/2123
−Mounting and operating instructions for
the control thermostats, e.g. uEB2231
−Mounting and operating instructions for
the safety temperature limiter, e.g.
uEB2046
Note

EB 2043 EN 13
Design and principle of operation
Table1: Technical data · Type2213 Safety Temperature Monitor (STM)
Type 2213 Safety Temperature Monitor
Adjustment ranges of limit temperature –10to+90°C·+20to+120°C
(14to194°F·68to248°F)
Permissible ambient temperature range
at the limit value adjuster
–40to+80°C
(–40to+176°F)
Permissible temperature at sensor 100Kabovetheadjustedlimit
Permissible pressure at the sensor
WithG1thermowell 40bar(580psi)
Without thermowell 6bar(87psi)
Capillary tube length1) 5m·10m2)
(197in·394in2))
Compliance ·
1) Special version also in plastic-coated copper
2) NottestedaccordingtoDINEN14597
Table2: Technical data·Types2111, 2422, 2118 and 2119 Valves
Valve Type2111, Type2422, Type2118 and Type2119
Valvesize DN 15 20 25 32 40 50 65 80 100 125 150 200 250
Type2111 uT2111 —
Type2422 uT2121
Type2118 uT2131 —
Type2119 uT2133 —
Nominal pressure PN16to40
Compliance ·
Valvesize NPS ½ ¾ 1 1½ 2 2½ 3 4 6 8 10
Type2111 uT2115 ——
Type2422 uT2025
Type2119 uT2134 —
Pressure rating Class150to300
Compliance ·

14 EB 2043 EN
Design and principle of operation
Table3: Dimensions in mm and weights
Valve Type2111
—
Nominal size DN 15 20 25 32 40 50
LengthL 130 150 160 180 200 230
H1
With-
out Extension 2253)/824) 2253)/1524)
With 3653)/— 3653)/—
Weight(PN16body)2),
approx. kg 4 4.5 5.5 13 13.5 16
Valve Type2422
Nominal size DN 15 20 25 32 40 50 65 80 100 125 150
LengthL 130 150 160 180 200 230 290 310 350 400 480
H1 Without Extension 225 225 300 355 460 590
With 365 365 440 495 600 730
Weight(PN16body)2),
approx. kg 5 5.5 6.5 13 13.5 16 27 32 40 70 113
Valve Type2118
—
Nominal size DN 15 20 25 32 40 50
LengthL 130 150 160 180 200 230
H2 70 80 85 100 105 120
H1 Without Extension1) 78 88
With — —
Weight(PN16body)2),
approx. kg 5 6.5 8 12.5 14.5 17
Valve Type2119
Nominal size DN 15 20 25 32 40 50 65 80 100 125 150
LengthL 130 150 160 180 200 230 290 310 350 400 480
H2 70 80 85 100 105 120 130 140 150 200 210
H1 Without Extension 235 245 320 355 395 500
With 375 385 460 495 535 640
Weight(PN16body)2),
approx. kg 6 7 8.5 15 17 19 32 50 71 On request
Type 2213 Safety Temperature Monitor
Weight
STM 5kg
Thermowell 0.5kg
Overall height H
STM H=H1+125
TR/STM H=H1+415
1) Type2118:anextensionpiecedoesnotpermitahighermax.permissibletemperature
2) +15%forPN25/40
3) Type2111,valvematerial1.0619andstainlesssteel
4) Type2111,valvematerialEN-GJS-400-18-LTandEN-JL-1040

EB 2043 EN 15
Design and principle of operation
G1
G1
Ø25
290 310
H
L
H1
SW 46
SW 41
199
128
Fig.3: Dimension diagrams of Type2111/2213·Type2422/2213·Type2118/2213·Type2119
/2213
G1
Ø28
325
140
G1
G1
SW 36
L
H1
H
G1
G1
H
H2
L
H1
H1
H
L
H2
G1
Type2422 Valve and
Type2111Valve(1.0619,stainlesssteel)
Type 2111 Valve
(EN-JS1049,EN-JL1040)
Type 2119 Valve
Type 2118 Valve
Extension piece
(approx.0.5kg)
Addapprox.140mmtotheoverallheight
H1 or H when an extension piece is used.
ThermowellforType2213
With threaded connection
G1forPN40
All dimensions in mm

16 EB 2043 EN
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as fol-
lows:
1. Check the scope of delivery. 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 to delivery note).
4.1 Unpacking
Do not remove the packaging until immedi-
ately before mounting it onto the valve.
Proceed as follows to lift and mount the de-
vice:
1. Remove the packaging from the device.
2. Dispose of the packaging in accordance
with the valid regulations.
Note
4.2 Transporting and lifting
Due to the low service weight, lifting equip-
ment is not required to lift and transport the
safety temperature monitor (e.g. to mount it
onto the valve).
Transport instructions
−Protectthedeviceagainstexternalinu-
ences (e.g. impact).
−Protect the device against moisture and
dirt.
−Do not damage the corrosion protection
(paint, surface coatings). Repair any
damage immediately.
−Observe the permissible ambient tem-
peratures(seesection3.2).

EB 2043 EN 17
Measures for preparation
4.3 Storage
Risk of device damage due to improper stor-
age.
−Observe storage instructions.
−Avoid long storage times.
−Contact SAMSON in case of different stor-
age conditions or long storage periods.
We recommend regularly checking the de-
vice and the prevailing storage conditions
during long storage periods.
Storage instructions
−Protect the safety temperature monitor
againstexternalinuences(e.g.impact).
−Do not damage the corrosion protection
(paint, surface coatings). Repair any
damage immediately.
−Protect the device against moisture and
dirt. Store it at a relative humidity of less
than75%.Indampspaces,prevent
condensation. If necessary, use a drying
agent or heating.
−Make sure that the ambient air is free of
acids or other corrosive media.
−Observe the permissible ambient tem-
peratures(seesection3.2).
−Do not place any objects on the device.
NOTICE
!
Note
SAMSON's After-sales Service department
can provide more detailed storage instruc-
tions on request.
4.4 Preparation for installation
Proceed as follows:
ÎCheck to ensure that the connection for
the safety temperature monitor at the
valve is clean.
ÎCheck the safety temperature monitor for
damage.
ÎCheck to make sure that the type desig-
nation, pressure rating and temperature
range of the safety temperature monitor
matchtheplantconditions(sizeand
pressure rating of the pipeline, medium
temperature etc.).
ÎCheck any mounted thermometers to
make sure they function.
Tip

18 EB 2043 EN
Mounting and start-up
5 Mounting and start-up
Risk of overheating due to excessive ambient
temperatures or insufcient heat dissipation
when components are insulated.
Do not include the safety temperature moni-
tor in the insulation of the pipeline.
5.1 Mounting the safety tem-
perature monitor onto the
valve
See Fig.2.
TheType2213SafetyTemperatureMonitor
is always installed in combination with a
valve as as safety temperature regulator. The
operating element with the spring mecha-
nism (8) can be attached to the valve body
using the coupling nut (6) either before or af-
ter the valve is installed in the pipeline.
Put the safety temperature monitor into oper-
ation after mounting the valve and control
thermostat.
The following points must be observed
during installation:
ÎObserve the permissible ambient tem-
peraturerangefrom–40to+80°C.
ÎMake sure that the regulator remains
freely accessible after the plant has been
completed.
NOTICE
!NOTICE
!
Note
ÎInstallthevalveinahorizontalpipeline
with the operating element connection
suspendeddownward(seeTable2).
Risk of damage to the valve or safety tem-
perature monitor due to excessively high or
low tightening torques.
The connection between valve and safety
temperature monitor must be tightened with
a certain tightening torque. Excessively tight-
ened torques lead to parts wearing out
quicker. Parts that are too loose may cause
leakage.
Observe the specied tightening torques.
5.2 Additional ttings
Strainer
Astrainerinstalledupstreamintheowpipe
holds back any dirt or other foreign particles
carried along by the medium. For example,
theSAMSONType2NIStrainerissuitable
(uT1015).
The following points must be observed
during installation of the strainer:
−Do not use the strainer to permanently
ltertheprocessmedium.
−Install the strainer upstream of the regu-
lator.
−Allowsufcientspacetoremovethelter.
−Observetheowdirection.
−Inhorizontalpipelineswithgasesorliq-
uids,thelterelementfacesdownward.
NOTICE
!

EB 2043 EN 19
Mounting and start-up
5.3 Temperature sensor and
capillary tube
Risk o irreparable regulator damage
caused by the regulator components being
taken apart. Do not separate the safety ther-
mostat from the capillary tube or tempera-
ture sensor.
Temperature sensor
The temperature sensor may be installed in
eitherahorizontalorverticalposition.How-
ever, make sure its entire length is immersed
in the process medium to be controlled. It
must be installed in a location where over-
heating or considerable idling times cannot
occur.
−WeldaweldingsocketwithG1female
thread at the place of installation.
−Seal the sensor into welded socket.
−When a thermowell is used, we recom-
mendllingthefreespacebetweensen-
sor and thermowell with oil or, when in-
stalledhorizontally,withgreaseorany
other heat transfer medium to avoid de-
lays during heat transmission. This pre-
vents heat transfer delays. Observe the
thermalexpansionofthellingmedium.
Allow some space for expansion and do
notlltheentirefreespaceorslightly
loosen sensor nut for pressure compensa-
tion.
NOTICE
!NOTICE
!
Thelterelementfacessidewaysinap-
plications with steam.
−Install strainers in vertical pipelines with
themediumowingupwardwiththe
cover facing upward.
Shut-off valve
Install a hand-operated shut-off valve both
upstream of the strainer and downstream of
the regulator. This allows the plant to be shut
down for cleaning and maintenance, and
when the plant is not used for longer periods
of time.
Thermometer
Install a thermometer both upstream and
downstream of the regulator to monitor the
temperatures prevailing in the plant.

20 EB 2043 EN
Mounting and start-up
WirethemicroswitchaccordingtoFig.4.
Fig.4: Circuit diagram for signal transmitter
5.4.1 Retrotting and
adjusting a signal
transmitter
See Fig.5.
Retrotting a signal transmitter
The electric signal transmitter (order no.
1690-5724)canbettedasfollows:
1. Unfasten the four screws (1) at the con-
necting part and remove the scale (2).
2. Take the ready-assembled transmitter out
of the packaging. Remove the two bolts
(5) and nuts (6). Take the switch (3) off
the scale (4).
3. Secure the scale (4) to the connecting
part using the four screws (1), ensuring
that the pointer (7) of the travel stem is
able to move in a straight line in the mid-
dle of the left window.
Black
Brown:
unlocked
Blue: locked
Galvanic corrosion due to incorrectly se-
lected materials of the mounting parts.
On installing the sensor or thermowell, only
use similar materials (e.g. stainless steel with
stainless steel or copper together with other
copper materials).
Capillary tube
Carefully run the capillary tube (9) without
bending or twisting it. Avoid locations with
considerableambienttemperatureuctua-
tions along the entire length of the tube.
Do not damage or shorten the capillary
tube. Roll up excess tube to form a ring. The
smallest permissible bending radius is
50mm.
5.4 Electric signal transmitter
Thesafetytemperaturemonitorcanbetted
with an electric signal transmitter. The signal
transmitter contains a microswitch (max.
load10A,125V,250V)whichgenerates
a signal if the temperature limit is exceeded
or if the sensor fails (capillary tube is bro-
ken).
NOTICE
!NOTICE
!
NOTICE
!NOTICE
!
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