TemplateA4_v20130506
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Incaseoffunction-drivenopeningofthedrainvalveonthebackowpreventer(optionaltop-up)ortriggeringofthereliefvalve
topreventoverloadingofthevessel,aswellasforpotentialoverowattheconnectioninacaseofvesseldiaphragmdamageto
compensateforatmosphericpressure,thetop-uporprocesswaterisdrained.Dependingontheprocess,thewatertemperature
canriseto70°Cand,inthecaseofimproperoperationexceed70°C.Thispresentsadangerofpersonalinjurythroughburns
and/orscalding.
Itisimportanttoensurethatthiswatercanbedrainedsafely,and-topreventwaterdamage-thatthereisasafedrainorwater
collectorintheimmediatevicinityoftheappropriateequipment(groundwaterprotection:observeadditives!).
Floodedequipmentmustnotbeoperated.Ifelectricalequipmentshortcircuits,personsorotherbeingsinthewaterwillbe
electrocuted.Furthermore,thereisadangerofmalfunctionandpartialorirreparabledamagetoindividualcomponentsdueto
watersaturationandcorrosion.
4.9 Noise reduction
Installationsshouldbeconstructedwithnoise-reductionmeasuresinmind.Mechanicalvibrationsoftheassembly(Module
framework,pipework)inparticularcanbedampenedbyusinginsulationbetweencontactsurfaces.
4.10 EMERGENCY-STOP / EMERGENCY-OFF
Toconformwithdirective2006/42/EGanEMERGENCY-STOPfacilityismadeavailablebythemainpowerswitchonthecontrol
unit.Thisswitchseparatesthephasesandneutrals.WhenadditionalsecuritymeasureswithEMERGENCY-OFFdevicesare
requiredaccordingtothedesignandoperationoftheheatgenerator,thesearetobeinstalledon-site.
4.11 Personal protective equipment (PPE)
PPEmustbeusedwhencarryingoutpotentiallydangerousworkandotheractivities(e.g.welding),inordertopreventor
minimisetheriskofpersonalinjuryifothermeasurescannotbetaken.Thesemustcomplywiththerequirementsspeciedbythe
maincontractororoperatoroftheoperationsroomorthesiteinquestion.
Ifnorequirementsarespecied,tooperatetheautomatnoPPEisrequired.Minimumrequirementsarewell-ttingclothingand
sturdy,closedandskidprooffootwear.
Otherservicesrequiretheprotectiveclothingandequipmentnecessaryfortheactivityinquestion(e.g.transportandassembly:
rugged,close-ttingworkclothing,footprotectors[safetyshoeswithtoecaps],headprotection[safetyhelmet],handprotectors
[protectivegloves];maintenance,repairandoverhaul:rugged,close-ttingworkclothing,footprotectors,handprotectors,eye/
faceprotector[safetygoggles]).
4.12 Exceeding permitted pressure / temperature levels
Equipmentusedincombinationwiththeexpansionautomatmustguaranteethatthepermittedoperatingtemperatureandthe
permittedmediumtemperature(heattransfermedium)cannotbeexceeded.Excesspressureandtemperaturemayleadto
componentoverload,irreparabledamagetocomponents,lossoffunctionand,asaresult,toseverepersonalinjuryanddamage
toproperty.Regularchecks/inspectionsofthesesafeguardsmustbecarriedout.Servicelogsmustbekept.
4.13 System water
Waterwhichisnon-ammable,doesnotcontainsolidsorlong-brecomponentsanddoesnotpresentadangertooperations
duetoitscontents,andwillnotaffectordamagethewaterbearingcomponents(e.g.:pressurisedcomponents,thediaphragm,
vesselconnection)oftheexpansionautomat.Alsoobserve:VDI2035-avoidanceofdamagetowarmwaterheatingequipment.
Systemwatercontainingcomponentsarepipelines,hosesconnectedtothevessel,devicesandsystemconnectionsincluding
valvesandttings,andtheircasings,sensors,pumps,thevesselitselfandthevesseldiaphragm.Operationwithimpropermedia
canleadtoimpairedfunction,damagetocomponentsand,asaconsequence,toseriouspersonalinjuryanddamage.
4.14 Safeguards
Theequipmentsuppliedisequippedwiththerequiredsafetydevices.Totesttheireffectivenessorrestoretheset-upconditions,
theequipmentmustrstbetakenoutofservice.Takingthesystemoutofserviceimpliesthatpowershouldbecutandhydraulic
connectionsblocked,topreventaccidentalorunintentionalre-connection.
Mechanical hazards:
Thefancoveronthepumpprotectsusersfrompersonalinjurycausedbymovingparts.Beforeswitchingtheuniton,makesure
thatthecoverissuitableforthispurposeandproperlysecured.
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