Burkert 8690 User manual

Operating Instructions
Type 8690
Pneumatic Control Unit

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2008 - 2017
Operating Instructions 1709/09_EU-EN_00805640 / Original DE

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1 OPERATING INSTRUCTIONS............................................... 4
1.1 Symbols....................................................................... 4
1.2 Denitionofterm/abbreviation .................................. 4
2 AUTHORIZED USE ............................................................... 5
3 BASIC SAFETY INSTRUCTIONS.......................................... 5
4 GENERAL INFORMATION .................................................... 6
4.1 Contactaddress.......................................................... 6
4.2 Warranty ...................................................................... 6
4.3 Trademarks.................................................................. 7
4.4 Informationontheinternet .......................................... 7
5 DESCRIPTION OF SYSTEM ................................................. 7
5.1 Congurationandfunction.......................................... 7
6 TECHNICAL DATA................................................................. 9
6.1 Conformity................................................................... 9
6.2 Standards .................................................................... 9
6.3 Licenses ...................................................................... 9
6.4 Operatingconditions................................................... 9
6.5 Mechanicaldata ........................................................ 10
6.6 Pneumaticdata ......................................................... 10
6.7 Electricaldata............................................................ 10
6.8 Typelabel .................................................................. 11
6.9 ULadditionallabel..................................................... 11
7 INSTALLATION .................................................................... 11
7.1 Safetyinstructions..................................................... 11
7.2 InstallationofthePneumaticControlUnitType8690
onprocessvalvesofseries21xx............................... 12
7.3 InstallationofthePneumaticControlUnitType8690
onprocessvalvesofseries20xx............................... 14
7.4 Rotatingtheactuatormodule.................................... 17
7.5 RotatingthePneumaticControlUnitforprocess
valvesbelongingtoseries20xx ................................ 19
8 PNEUMATIC INSTALLATION .............................................. 20
9 ELECTRICAL INSTALLATION ............................................. 21
9.1 Safetyinstructions..................................................... 21
9.2 Electricalinstallation
withcablegland ....................................................... 22
9.3 Electricalinstallationwith
circularplug-inconnector.......................................... 24
9.4 Adjustmentofthemicroswitchortheproximity
switches(option)........................................................ 26
10 MAINTENANCE................................................................... 27
10.1 Serviceattheairintakelter ..................................... 27
11 ACCESSORIES ................................................................... 28
12 SAFETY POSITIONS .......................................................... 28
13 DISASSEMBLY.................................................................... 29
13.1 Safetyinstructions..................................................... 29
13.2 DisassemblythePneumaticControlUnit.................. 29
14 PACKAGING, TRANSPORT, STORAGE ............................. 30
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Type 8690

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Operating instructions
1 OPERATING INSTRUCTIONS
The operating instructions describesthe entire life cycle of the
device.Keeptheseinstructionsinalocationwhichiseasilyacces-
sibletoeveryuser,andmaketheseinstructionsavailabletoevery
newownerofthedevice.
Important safety information.
Readtheoperatinginstructionscarefullyandthoroughly.Study
inparticularthechaptersentitled“Basicsafetyinstructions”
and“Authorizeduse”.
▶Theoperatinginstructionsmustbereadandunderstood.
1.1 Symbols
DANGER!
Warns of an immediate danger.
▶Failuretoobservethewarningwillresultinafatalorserious
injury.
WARNING!
Warns of a potentially dangerous situation.
▶Failuretoobservethewarningmayresultinseriousinjuries
ordeath.
CAUTION!
Warns of a possible danger.
▶Failuretoobservethiswarningmayresultinamoderateor
minorinjury.
NOTE!
Warns of damage to property.
▶Failuretoobservethewarningmayresultindamagetothe
deviceortheequipment.
Indicatesimportantadditionalinformation,tipsand
recommendations.
Referstoinformationintheseoperatinginstructionsorin
otherdocumentation.
▶Designatesaninstructiontopreventrisks.
→Designatesaprocedurewhichyoumustcarryout.
1.2 Denition of term / abbreviation
Theterm“device”usedintheseinstructionsalwaysstandsfor
thePneumaticControlUnitType8690.
Intheseinstructions,theabbreviation“Ex”alwaysrefersto
“potentiallyexplosive”.
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Type 8690

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Authorized use
2 AUTHORIZED USE
Non-authorized use of the Pneumatic Control Unit Type
8690 may be a hazard to people, nearby equipment and the
environment.
Thedeviceisdesignedtobemountedonpneumaticactuators
ofprocessvalvesforthecontrolofmedia.
▶Inthepotentiallyexplosion-riskareathePneumaticControlUnit
Type8690maybeusedonlyaccordingtothespecicationon
theseparateapprovalsticker.Foruseobservetheadditional
instructions enclosed with the device together with safety
instructionsfortheexplosion-riskarea.
▶Deviceswithoutaseparateapprovalstickermaynotbeused
inapotentiallyexplosivearea.
▶Donotexposethedevicetodirectsunlight.
▶Use according to the authorized data, operating conditions
and conditions of use specied in the contract documents
andoperatinginstructions.Thesearedescribedinthechapter
entitled“6Technicaldata”.
▶Thedevicemaybeusedonlyinconjunctionwiththird-party
devices and components recommended and authorized by
Bürkert.
▶Inviewofthelargenumberofoptionsforuse,beforeinstalla-
tion,itisessentialtostudyandifnecessarytotestwhetherthe
PneumaticControlUnitissuitablefortheactualuseplanned.
▶Correct transportation, correct storage and installation and
careful use and maintenance are essential for reliable and
faultlessoperation.
▶UsethePneumaticControlUnitType8690onlyasintended.
3 BASIC SAFETY INSTRUCTIONS
Thesesafetyinstructionsdonotmakeallowanceforany
•contingenciesandeventswhichmayariseduringtheinstallation,
operationandmaintenanceofthedevices.
•localsafetyregulations,wherebytheoperatorisresponsiblefor
theircompliance,bytheinstallationpersonneltoo.
DANGER!
Risk of injury from high pressure in the equipment/device.
▶Beforeworkingonequipmentordevice,switchothepressure
anddeaerate/drainlines.
Risk of electric shock.
▶Beforeworkingonequipmentordevice,switchothepower
supplyandsecuretopreventreactivation.
▶Observeapplicableaccidentpreventionandsafetyregulations
forelectricalequipment.
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Type 8690

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General information
General hazardous situations.
Topreventinjury,ensure:
▶Thatthesystemcannotbeactivatedunintentionally.
▶Installationandrepairworkmaybecarriedoutbyauthorized
techniciansonlyandwiththeappropriatetools.
▶Afteraninterruptioninthepowersupplyorpneumaticsupply,
ensurethattheprocessisrestartedinadenedorcontrolled
manner.
▶Thedevicemaybeoperatedonlywheninperfectcondition
andinconsiderationoftheoperatinginstructions.
▶Thegeneralrulesoftechnologyapplytoapplicationplanning
andoperationofthedevice.
Topreventdamagetopropertyofthedevice,ensure:
▶Donotfeedanyaggressiveorammablemediaintothepilot
airport.
▶Donotfeedanyliquidsintothepilotairport.
▶When unscrewing and screwing in the transparent cap, do
notholdtheactuatoroftheprocessvalvebuttheconnection
housingofType8690.
▶Donotputanyloadsonthehousing(e.g.byplacingobjects
onitorstandingonit).
▶Donotmakeanyexternalmodicationstothedevicehousings.
4 GENERAL INFORMATION
4.1 Contact address
Germany
BürkertFluidControlSystems
SalesCenter
Chr.-Bürkert-Str.13-17
D-74653Ingelngen
Tel.:07940-1091111
Fax:07940-1091448
E-mail:[email protected]
International
Contactaddressesarefoundonthenalpagesoftheprinted
operatingmanual.
YoucanalsondinformationontheInternetunder:
www.burkert.com
4.2 Warranty
Thewarrantyisonlyvalid ifthe deviceisused asauthorizedin
accordancewiththespeciedapplicationconditions.
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Type 8690

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Description of system
4.3 Trademarks
Brandsandtrademarkslistedbelowaretrademarksofthecor-
respondingcompanies/associations/organizations
Loctite HenkelLoctiteDeutschlandGmbH
4.4 Information on the internet
TheoperatinginstructionsanddatasheetsforType8690canbe
foundontheInternetat:
www.burkert.com
5 DESCRIPTION OF SYSTEM
5.1 Conguration and function
ThePneumaticControlUnitType8690cancontrolsingleordouble-
actingprocessvalves.
ThePneumaticControlUnitType8690hasbeenoptimizedforinte-
grated,modularinstallationonprocessvalvesofthe21xxseries.
Themodulecongurationpermitsavarietyofexpansionsteps.
Forinstallationonthe20xxseriesthereisaspecialmodelwhich
isdescribedinChapter“5.1.2”.
5.1.1 Pneumatic Control Unit for integrated
installation on 21xx series
CableglandM16x1.5or
Circularplug-inconnectorM12x1
Exhaustairport
label:3
Pressurelimitingvalve
(forprotectionagainst
toohighinternal
pressureincaseof
error)
Pilotairport
label:1
Transparentcap
Connectionhousing
Fig. 1: Conguration and function (1)
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Type 8690

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Description of system
Optical position indicator:
Thedevicestatusisdisplayedonthepneumaticcontrolunit(yellow
mark).
Option: Electrical position feedback
Optionallymechanicallimitswitches(microswitches)orinductive
limitswitches(proximityswitches)canmeasurethevalveposition.
Viewwithouttransparentcap:
Pilotvalve(3/2-way
or5/2-waysolenoid
valvewithhandlever)
Airintakelter(exchangeable) Fasteningscrews(2x)
Screwterminals
Screwforadjustment
oftheupperprox-
imityswitch
Screwforadjustment
ofthelowermicro
switchorthelower
proximityswitch
Opticalpositionindi-
cator(yellowmark)
Fig. 2: Conguration and function (2)
5.1.2 Model for control of process valves
belonging to the 20xx series
AspecialmodelenablesthePneumaticControlUnitType8690to
beattachedtoprocessvalvesbelongingtothe20xxseries.
Thismodelhasadierentconnectionhousingsothatthepilotair
portscanbeconnectedtotheoutsideoftheactuator.
Pilotairoutlet21
Fasteningscrews(2x)
Pilotairoutlet22
Fig. 3: Model for process valves, 20xx series
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Type 8690

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Technical data
6 TECHNICAL DATA
6.1 Conformity
InaccordancewiththeEUDeclarationofconformity,thePneu-
maticControlUnitType8690iscompliantwiththeEUDirectives
(ifapplicable).
6.2 Standards
Theappliedstandards,whichverifyconformitywiththeEUDirec-
tives,canbefoundontheEU-TypeExaminationCerticateand/
ortheEUDeclarationofConformity(ifapplicable).
6.3 Licenses
Theproductisapprovedforuseinzone1,2,21and22inaccor-
dancewithATEXdirective94/9/ECcategory2GDand3GD.
Observeinstructionsonoperationinanexplosion-risk
(Ex)area.ObservetheATEXadditionalinstructions.
TheproductiscULusapproved.InstructionsforuseintheUL
areaseechapter“6.7Electricaldata”.
6.4 Operating conditions
WARNING!
Solar radiation and temperature uctuations may cause mal-
functions or leaks.
▶Ifthedeviceisusedoutdoors,donotexposeitunprotected
totheweatherconditions.
▶Ensurethatthepermittedambienttemperaturedoesnotexceed
themaximumvalueordropbelowtheminimumvalue.
Ambienttemperature  seetypelabel
Degreeofprotection
Evaluatedbythe
manufacturer:
EvaluatedbyUL:
IP65/IP67accordingto
EN 605291)
ULType4xRating1)
1) Only if cables, plugs and sockets have been connected cor-
rectly and in compliance with the exhaust air concept, see
chapter “8 Pneumatic installation”.
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Technical data
6.5 Mechanical data
Dimensions     seedatasheet
Housingmaterialexternal PPS,PC
Sealingmaterial external EPDM
internal NBR
Strokerangeofvalvespindle Microswitch 7–28mm
Proximityswitch 2–28mm
6.6 Pneumatic data
Controlmedium neutralgases,air,Qualityclassesinaccor-
dancewithISO8573-1
 Dustcontent Class7 max.particlesize40μm,
        max.particledensity10mg/m3
Watercontent Class3 max.pressuredewpoint-20°Cor
        min.10°Cbelowthelowestoper-
ating
        temperature
Oilcontent ClassX max.25mg/m3
 Temperaturerange  -10to+50°C
 Pressurerange   3to7bar
Airoutputofpilotvalve  250IN/min
(foraerationanddeaeration,QNn-
valueaccordingtodenitionfor
pressuredropfrom7to6bar
absolute)
Connections     Plug-inhoseconnector∅6mm/¼”
SocketconnectionG1/8
6.7 Electrical data
WARNING!
OnlycircuitswithlimitedpowermaybeusedforULapproved
componentsaccordingto“NECClass2”.
Protectionclass 3asperDINEN61140(VDE0140-1)
Connections  CableglandM16x1.5,wrenchsize22
(clampingarea5–10mm)
withscrewterminals
forcablecross-sections0.14–1.5mm²
Circularplug-inconnectorM12x1,8-pole
Supplyvoltage
 Pilotvalve   24VDC±10%,residualripple10%
Microswitch  24VDCmax.2A
Proximityswitches24VDCmax.100mAperproximityswitch
Powerconsumptionofpilotvalve: 1W
Positionfeedback
 (option):   1or2xMicroswitch(24VDC)
1or2xProximityswitch(24VDC),
  normallyopenPNP
1or2xProximityswitchNAMUR(8VDC)
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Type 8690

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Installation
6.8 Type label
Example:
8690-E3-I2-*PU02
singleactpilot3.024V
Pmax7bar 2sw.ind.
Tamb-10-+55°C
S/N1001
00123456
D-74653Ingelfingen
W15MA
CE
Identicationnumber;Dateof
manufacture(encoded)
Operatingpressure-limitswitch
Type;FeaturesofthetypecodeapplicabletoUL
andATEX
Controlfunction;pilotvalve;
Supplyvoltagepilotvalve
Barcode
Serialnumber/CEmark
Max.ambienttemperature
Fig. 4: Example of type label
6.9 UL additional label
Example:
Type4Xenclosure
NECClass2only
Limitswitch:10...24V
Supplyvoltagelimit
switch
Circuitwithlimitedpower
Degreeofprotection
Fig. 5: UL additional label (example)
7 INSTALLATION
OnlyforPneumaticControlUnitwithoutpre-assembled
processvalve.
7.1 Safety instructions
DANGER!
Risk of injury from high pressure in the equipment/device.
▶Beforeworkingonequipmentordevice,switchothepressure
anddeaerate/drainlines.
Risk of electric shock.
▶Beforeworkingonequipmentordevice,switchothepower
supplyandsecuretopreventreactivation.
▶Observeapplicableaccidentpreventionandsafetyregulations
forelectricalequipment.
WARNING!
Risk of injury from improper installation.
▶Installationmaybecarriedoutbyauthorizedtechnicians
onlyandwiththeappropriatetools.
Risk of injury from unintentional activation of the system and
an uncontrolled restart.
▶Securesystemfromunintentionalactivation.
▶Followinginstallation,ensureacontrolledrestart.
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Type 8690

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Installation
7.2 Installation of the Pneumatic
Control Unit Type 8690 on process
valves of series 21xx
NOTE!
When mounting on process valves with a welded body,
follow the installation instructions in the operating instruc-
tions for the process valve.
Procedure:
1. Install switch spindle:
Transparentcap
Actuator
Pilotairports
(plug-inhose
connectorswith
colletsorthreaded
bushings)
Fig. 6: Installation of the switch spindle (1), 21xx series
→Unscrewthetransparentcapontheactuatorandunscrew
thepositiondisplay(yellowcap)onthespindleextension.
→Formodelwithplug-inhoseconnector,removethecollets
(whitenozzles)frombothpilotairports(ifpresent).
O-ring
Spindleextension
Guideelement
Actuatorcover
Groovering
Switchcam
Switchspindle
10
max.5Nm
max.1Nm
Fig. 7: Installation of switch spindle (2), 21xx series
NOTE!
Improper installation may damage the groove ring in the
guide element.
Thegrooveringisalreadybepre-assembledintheguide
elementandmustbe“lockedintoposition”intheundercut.
▶Wheninstallingtheswitchspindle,donotdamagethegroove
ring.
→Pushtheswitchspindlethroughtheguideelement.
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Type 8690

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Installation
NOTE!
Screw locking paint may contaminate the groove ring.
▶Donotapplyanyscrewlockingpainttotheswitchspindle.
→Tosecuretheswitchspindle,applysomescrewlockingpaint
(Loctite290)inthetappedboreofthespindleextensioninthe
actuator.
→CheckthattheO-ringiscorrectlypositioned.
→Screwthecentralscrewtotheactuatorcover(maximum
torque:5Nm).
→Screwswitchspindleontothespindleextension.Todothis,
thereisaslotontheupperside(maximumtorque:1Nm).
→Positiontheswitchcamontheswitchspindlesothatthedis-
tancebetweentheswitchcamandtopofthespindleis10mm
(see“Fig.7”)
2. Install sealing rings
Formseal
Pilotairports
Caution:
Colletsmustnotbe
tted! Installationof
theformseal
Fig. 8: Installing of the sealing rings, 21xx series
→Pulltheformsealontotheactuatorcover(smallerdiameter
pointsupwards).
→CheckthattheO-ringsarecorrectlypositionedinthepilotair
ports.
WhenthePneumaticControlUnitisbeing installed,the
colletsofthepilotairportsmustnotbettedtotheactuator.
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Installation
3. Installation of the Pneumatic Control Unit
Connection
pieces
Pilotair
ports
Fastening
screws
max.1.5Nm
Fig. 9: Installation of the Pneumatic Control Unit, 21xx series
→AlignthePneumaticControlUnituntiltheconnectionpieces
ofthePneumaticControlUnitcanbeinsertedintothepilot
airportsoftheactuator(seealso“Fig.9”).
→PushthePneumaticControlUnit,withoutturningit,ontothe
actuatoruntilnogapisvisibleontheformseal.
NOTE!
Too high torque when screwing in the fastening screw does
not ensure degree of protection IP65 / IP67.
▶Thefasteningscrewsmaybetightenedtoamaximum
torqueof1.5Nmonly.
→AttachthePneumaticControlUnittotheactuatorusingthe
twosidefasteningscrews.Indoingso,tightenthescrews
onlyhand-tight(max.torque:1.5Nm).
7.3 Installation of the Pneumatic
Control Unit Type 8690 on process
valves of series 20xx
Procedure:
1. Install switch spindle
Transparentcap
Positionindicator
Actuator
Fig. 10: Installation of the switch spindle (1), series 20xx
→Unscrewthetransparentcapontheactuator.
→Usingahexagonsocketkey,unscrewtheorange/yellow
positionindicatorfromtheinsideoftheactuator.
→PresstheO-ringdownwardsintothecoveroftheactuator
(see“Fig.11”).
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Type 8690

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Installation
Guideelement
O-ring
Plasticpartofthe
switchspindle
Switchcam
Switchspindle
10 mm
Spindle(actuator)
Fig. 11: Installation of the switch spindle (2), series 20xx
→Manuallyscrewtheswitchspindle(andtheplugged-onguide
element)togetherwiththeplasticpartontothespindleofthe
actuator,butdonottightenspindleyet.
→Tightentheguideelementwithafacewrench2)intothe
actuatorcover(torque:8.0Nm).
→Tightentheswitchspindleonthespindleoftheactuator.To
dothis,thereisaslotontheupperside(torque:1.0Nm).
→Positiontheswitchcamontheswitchspindlesothatthedis-
tancebetweentheswitchcamandtopofthespindleis10mm
(see“Fig.11”).
2) journal Ø: 3 mm; journal gap: 23.5 mm
2. Installation of the cover ring and the Pneumatic Control
Unit
Coverring Fastening
screws
max.1.5Nm
Fig. 12: Installation of the cover ring and the Pneumatic Control
Unit, series 20xx
→Pullthecoverringontotheactuatorcover
(foractuatorsizes∅50and∅63only).
→PushthePneumaticControlUnitontotheactuator.
→PressthePneumaticControlUnitallthewaydownasfaras
theactuatorandturnitintotherequiredposition.
EnsurethatthepneumaticportsofthePneumaticControl
Unit and those of the actuator are situated preferably
verticallyoneabovetheother(see“Fig.12”).Iftheyare
positioneddierently,longerhosesmayberequiredother
thanthosesuppliedintheaccessorykit.
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Type 8690

16
Installation
NOTE!
Too high torque when screwing in the fastening screw does
not ensure degree of protection IP65 / IP67.
▶Thefasteningscrewsmaybetightenedtoamaximumtorque
of1.5Nmonly.
→AttachthePneumaticControlUnittotheactuatorusingthe
twosidefasteningscrews.Indoingso,tightenthefastening
screwshand-tightonly(max.torque:1.5Nm).
3. Installation of the pneumatic connection on the actuator
Pilotairoutlet21
Lowerpilotairport
Upperpilotairport
Pilotairoutlet22
Fig. 13: Installation of the pneumatic connection, 20xx series
→Screwtheplug-inhoseconnectorsontothePneumatic
ControlUnitandtheactuator.
→Usingthehosessuppliedintheaccessorykit,makethecon-
nectionbetweenthePneumaticControlUnitandtheactuator
withthefollowing“Tab.1:Pneumaticconnectiontoactuator”.
NOTE!
Damage or malfunction due to ingress of dirt and moisture.
▶TocomplywithdegreeofprotectionIP65/IP67,connectthe
pilotairoutletwhichisnotrequiredtothefreepilotairport
oftheactuatororsealwithaplug.
“Inrestposition”meansthatthepilotvalvesofthe
PneumaticControlUnitType8690areisolatedornot
actuated.
If the ambient air is humid, a hose can be connected
betweenpilotairoutlet22ofthePneumaticControlUnit
andtheunconnectedpilotairportoftheactuatorforcontrol
function A or control function B. As a result, the spring
chamberoftheactuatorissuppliedwithdryairfromthe
ventductofthePneumaticControlUnit.
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Type 8690

17
Installation
Control function Pneumatic connection Type 8690
with actuator
Pilot air outlet
Type 8690
Pilot air port
actuator
A
Processvalve
closedinrest
position
(byspringforce)
21
lowerpilotairport
oftheactuator
22
shouldbecon-
nectedtothe
upperpilot
airportofthe
actuator
B
Processvalveopen
inrestposition
(byspringforce)
21
upperpilot
airportofthe
actuator
22
shouldbecon-
nectedtothe
lowerpilotairport
oftheactuator
Control function Pneumatic connection Type 8690
with actuator
Pilot air outlet
Type 8690
Pilot air port
actuator
I
Processvalve
closedinrest
position
21
lowerpilotairport
oftheactuator
22
upperpilot
airportofthe
actuator
Processvalveopen
inrestposition
21
upperpilot
airportofthe
actuator
22
lowerpilotairport
oftheactuator
Tab. 1: Pneumatic connection to actuator
7.4 Rotating the actuator module
Theactuatormodule(PneumaticControlUnitandactuator)
can be rotated for straight seat valves and angle seat
valvesonly.
The position of the connections can be aligned steplessly by
rotatingtheactuatormodule(PneumaticControlUnitandactuator)
through360°.
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Type 8690

18
Installation
Process valves Type 2100 and 2100: Only the entire
actuatormodulecanberotated.ThePneumaticControl
Unitcannotberotatedcontrarytotheactuator.
The process valve must be in the open position for
alignmentoftheactuatormodule.
DANGER!
Risk of injury from high pressure in the equipment/device.
▶Beforeworkingonequipmentordevice,switchothepressure
anddeaerate/drainlines.
Procedure:
→Clampvalvebodyinaholdingdevice(onlyrequiredifthe
processvalvehasnotyetbeeninstalled).
→ControlfunctionA:Openprocessvalve.
Actuator
module
Key
contour
Hexagon
Nipple
withhexagonwithouthexagon
Nipple
Fig. 14: Rotating the actuator module
→Usingasuitableopen-endwrench,counterthewrenchaton
thepipe.
→Actuatormodulewithouthexagon:
Fitspecialkey3)exactlyinthekeycontourontheundersideof
theactuator.
→Actuatormodulewithhexagon:
Placesuitableopen-endwrenchonthehexagonofthe
actuator.
3) The special key (665702) is available from your Bürkert sales
oce.
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Type 8690

19
Installation
WARNING!
Risk of injury from discharge of medium and pressure.
Ifthedirectionofrotationiswrong,thebodyinterfacemay
becomedetached.
▶Rotate the actuator module in the specied direction only
(see“Fig.15”).
→Actuatormodulewithouthexagon:
Rotateclockwise(asseenfrombelow)tobringtheactuator
moduleintotherequiredposition.
→Actuatormodulewithhexagon:
Rotatecounter-clockwise(asseenfrombelow)tobringthe
actuatormoduleintotherequiredposition.
Specialkey
Open-endwrench
withouthexagon
withhexagon
Fig. 15: Rotating with special key / open-end wrench
7.5 Rotating the Pneumatic Control
Unit for process valves belonging
to series 20xx
Iftheconnectingcablesorhosescannotbettedproperlyfollowing
installationoftheprocessvalve,thePneumaticControlUnitcan
berotatedcontrarytotheactuator.
Pneumatic
connection
Fastening
screw(2x)
Actuator
Pneumatic
ControlUnit
Fig. 16: Rotating the Pneumatic Control Unit, series 20xx
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Type 8690

20
Pneumatic installation
Procedure
→LoosenthepneumaticconnectionbetweenthePneumatic
ControlUnitandtheactuator.
→Loosenthefasteningscrews(hexagonsocketwrenchsize
2.5).
→RotatethePneumaticControlUnitintotherequiredposition.
NOTE!
Too high torque when screwing in the fastening screw does
not ensure degree of protection IP65 / IP67.
▶Thefasteningscrewmaybetightenedtoamaximumtorque
of1.5Nmonly.
→Tightenthefasteningscrewshand-tightonly(maximum
torque:1.5Nm).
→Re-attachthepneumaticconnectionsbetweenthePneu-
maticControlUnitandtheactuator.Ifrequired,uselonger
hoses.
8 PNEUMATIC INSTALLATION
DANGER!
Risk of injury from high pressure in the equipment/device.
▶Beforeworkingonequipmentordevice,switchothepressure
anddeaerate/drainlines.
Procedure:
→Connectthecontrolmediumtothepilotairport(1)
(3to7bar,oil,wateranddust-freeinstrumentair).
→Attachtheexhaustairlineorasilencertotheexhaustairport(3).
Importantinformationfortheproblem-freefunctioningof
thedevice:
▶Theinstallationmustnotcausebackpressuretobuildup.
▶Selectahosefortheconnectionwithanadequate
cross-section.
▶Theexhaustairlinemustbedesignedinsuchawaythat
nowaterorotherliquidcangetintothedevicethrough
theexhaustairport.
english
Type 8690