Fire Pump Sets To UNI 9490 And 10779 Standards .
GRUNDFOS DATA BOOKLETHydro UNI-NB/NKGrundfos fire systemsFire pump sets to UNI 9490 and 10779 standardswith electrically powered pumps (50 Hz)moc.odninketrt anec.www
ContentsApplicationsPerformance rangeProduct selection3Product descriptionGeneral introductionOther fire pump sets for fire fighting5Electrical data and performance dataof duty pumpsElectrical data and performance dataof jockey pumps666667Unit configurationSystem diagramComponents and materialsConfiguration drawing889Unit descriptionOperating pressureHydraulic componentsInspection and checksJockey pump optionsAccessoriesVersions on request101010101010Duty pumpsGeneral description of duty pumpsOperating conditionsDescription of constructionMotor11111112Jockey pumpProduct descriptionOperating conditionsDescription of construction131314Control panelsControl panels of duty and jockey pumps15InstallationRequirements to the roomRequirements to the pipeworkRequirements to control panels21616161819Dimensions and weightsmoc.odninketrt anec.wwwUnit functionsOperationStarting methodMonitoringAutomatic operationTest operationOperating conditions17Technical data44IdentificationType keyHow to choose a unitHydro UNI-NB/NBU units with one dutypump and jockey pumpHydro UNI-NK units with one dutypump and jockey pumpHydro UNI-NB/NBU units with two dutypumps and jockey pumpHydro UNI-NK units with two dutypumps and jockey pump20212223
ApplicationsHydro UNI-NB/NKGrundfos Hydro UNI-NB/NK automatic fire pump setsare typically used in fire fighting applications for supplying water to fire hose reels, fire hydrants or sprinklersystems.The Hydro UNI-NB/NK fire pump sets described in thisdata booklet cover all flow rates up to 320 m3/h andheads up to 100 m. Fire pump sets with a performanceexceeding this range are available on request. Pleasecontact Grundfos.Performance rangeNB/NBU pumps have rigid couplings according to EN 733NK pumps have standard base frames according to EN 733TM03 2743 4805moc.odninketrt anec.www3
Product descriptionGeneral introductionHydro UNI-NB/NK automatic fire pump sets aredesigned according to the Italian standards UNI 9490 ofApril 1989 and UNI 10779 of May 2002, both coveringfire fighting equipment.Please note that in the following the term ‘unit’ coversthe fire pump set described in this data booklet,whereas the term ‘system’ covers the fire hydrants orsprinkler systems of a building.In accordance with UNI 9490, Hydro UNI-NB/NK unitswith one duty pump are designed for fire systems of thelow hazard class type, units with two duty pumps aredesigned for fire systems of the ordinary hazard classtype.Hydro UNI-NB/NKAll the pumps are connected in parallel to a commondischarge manifold and fitted with hydraulic components and fittings.The units are designed for easy reading of gauges andsignals.The pumps are prepared for the connection of a primingcircuit in the case of suction lift installation.In order to prevent damage caused by overheating dueto possible operation against closed isolating valve, thepumps are equipped with connection for a bypass.moc.odninketrt anec.wwwHydro UNI-NB/NK are normally supplied as factorytested units equipped with One or two Grundfos NB or NK single-stage, endsuction electrically powered duty pumps.In two-pump units- each of the two pumps must be capable of achieving the required performance (one pump is astandby pump),- the two pumps must be supplied from separatepower supplies to ensure continued operation incase of power cut or failure to the first duty pump.See Duty pumps on page 11. One Grundfos CR multistage electrically poweredjockey pump. The jockey pump is also connected tothe common discharge manifold.The jockey pump automatically maintains pressurein the system in case of leaks and prevents the dutypumps from starting up when not required.See Jockey pump on page 13. One separate control panel for each pump.See Control panels on page 15.4To ensure correct operation of the jockey pump, theunit must be equipped with at least two 24-litre, PN-16diaphragm tanks. Additional tanks may be connected toa port fitted for the purpose in the discharge manifold.A common suction manifold is available as an option. Aunit with suction manifold is called complete (CPL) version.Other fire pump sets for fire fightingApart from the Hydro UNI-NB/NK, the Grundfos firesystem product range according to UNI standardsincludes Hydro Syntex-NB/NK fire pump set with two horizontal, single-stage, end-suction pumps (NB/NK) ofwhich one is electrically powered and one is dieselpowered Hydro Diesel-NB/NK fire pump set with one (ortwo) horizontal, single-stage, end-suction, dieselpowered pumps (NB/NK) Hydro UNI-CR fire pump set with one or two vertical, multistage, in-line, electrically powered pumps(CR).
IdentificationHydro UNI-NB/NKType keyType designation Hydro UNI-NB/NK9BAAA001Fixed numberFire pump setBHUNI NB/NK: One or two NB or NK pumps with one jockey pumpHydraulic variantsABCDEF*GHStandard versionWith suction manifold (CPL version)With discharge manifold dimensioned for two pumps operating simultaneouslyVariant B variant CWithout flowmeter and test circuitBronze impeller in duty pumpsStainless steel manifoldCPL version with stainless steel manifoldsDuty pump variantsABEHLmoc.odninketrt anec.wwwStandard versionProgrammable and automatic test of duty pump(s)Timer on duty pump (according to UNI 10779)Timer and automatic test of duty pump (according to UNI 10779)Starting method differs from standard (DOL or SD)Jockey pump variantsA256CRCRCRCR3 pump5 pump10 pump15 pumpSerial number (consecutive numbering)* Optional except for NK 80/M, NK 80/P, NK 100/C and NK 100/E, see Material specification on page 11.5
Unit functionsHydro UNI-NB/NKOperationAutomatic operationThe jockey pump keeps the system pressurized andcompensates for leaks in order to prevent the dutypumps from starting up unnecessarily.If the pressure in the system drops, the pumps will startup automatically and feed the system with water. Thestarting sequence isWhen required, the first duty pump will be started automatically in order to provide the flow rate described inoperating conditions in this section.1. jockey pumpThe second duty pump is a standby pump guaranteeingthe supply of water to the fire system in case of powerfailure or any other failure of the first duty pump.3. second duty pump.Note: The second duty pump is intended to start upif there is a failure of the first duty pump.Only the jockey pump is stopped automatically bymeans of a pressure switch when the upper pressurelimit is reached.moc.odninketrt anec.wwwEach pump is controlled by a separate controller.Starting methodDuty pumps up to and including 7.5 kW are starteddirect-on-line (DOL). Duty pumps of 11 kW andupwards are star/delta-started (SD) in order to avoidline overloads, stress on rotating parts and wear of system components.Monitoring2. first duty pump and, if necessary,The duty pumps can only be stopped manually bymeans of a push-button on the pump control panel.Alternatively, in fire hydrant systems the duty pumpsmay be stopped automatically by a timer (available asan accessory). The timer may be set to start countingfrom twenty minutes after water consumption hasceased. See Accessories on page 10.In accordance with the requirements of UNI 9490, aremote alarm device must be connected to the dutypump control panel to indicateSpecial "MAN-0-AUT" selector switches on the pumpcontrol panels allow each individual pump to be startedand stopped at any time, see Control panels onpage 15. power failureTest operation phase failure pump start-up.Furthermore, the alarm device must be equipped with a buffer battery give both audible and visual alarm signals be installed in manned premises, see Accessorieson page 10.In accordance with UNI 9490 test operation must beused during initial start-up and for periodic control testing.The duty pumps can be tested one at a time by turningthe selector switches on the control panel of the relevant pump to position “MAN”.Open the test circuit isolating valve and press the ONbutton on the pump to be tested in order to simulatewater consumption and pumping.It will now be possible to measure FLOW RATE - by means of a flowmeter fitted in thetest circuit HEAD - by means of a pressure gauge fitted in thedischarge pipe SUCTION HEAD - by means of a pressure and vacuum gauge fitted in the suction pipe Input CURRENT - by means of an ammeter Mains VOLTAGE - by means of a voltmeter.6
Unit functionsHydro UNI-NB/NKOperating conditionsFlow rateUp to 320 m3/h per pump.Operating pressureUp to 10 bar.PerformanceAccording to ISO 9906 A.Rated pressurePN 16 - for components and materials.Pumped liquidWater without solids or fibres.moc.odninketrt anec.wwwWater temperature 0 C to 50 C.Ambient temperature10 C to 40 C.Suction liftH pb x 10.2 – NPSH – Hf – Hs(with degassed water) H suction lift in mpb barometric pressure in barNPSH* net positive suction head in mHf friction loss in suction pipe in mHs safety margin (min. 0.5 m).* For information on NPSH for the pump, pleasecontact Grundfos.Max. inlet pressure6 barElectrical powerStarting methodElectricity supplyUp to 90 kW jockey pump.Direct-on-line (DOL) up to and incl. 7.5 kWstar/delta (SD) for 11 kW and upwards.3 x 400 V, 50 Hz, N, PE.7
Unit configurationHydro UNI-NB/NKSystem diagramConfiguration (example):Two duty pumps one jockey pumpRef.DescriptionAcaPriming circuit connection *AcrBypass connection *CASuction manifold (optional)CMDischarge manifoldmoc.odninketrt anec.wwwMPressure gaugeMpFlowmeterMvPressure and vacuum gaugePjJockey pumpPr1Pressure switch (discharge pressure)Pr2Pressure switch (cut-in, cut-out of pump)PsDuty pumpRmMulti-function valve for pressure gaugeSmDiaphragm tanks, 24 litres, PN 16 (accessory) **Vi(t)Isolating valve (ball valve)VidIsolating valve on discharge side (butterfly type)VisIsolating valve on suction side (ball or butterflytype)VrSpring-loaded non-return valveVrdInspectable non-return valve on discharge sideof duty pump** During installation, fit at least two 24-litre diaphragm tanks,PN 16, see Accessories on page 10 and Installation onpage 16.TM03 2776 4805* Connections to be made during installationComponents and materialsRef.PjDescriptionJockey pump (CR 3)1MaterialsGrundfos vertical multistage centrifugal pump; vital parts are madeof stainless steelPsDuty pump (NB/NK)1 or 2CMDischarge manifold1Galvanised steel, flanged, PN 16CASuction manifold (optional)1Galvanised steel, flanged, PN 16Grundfos cast iron, single-stage, end-suction pumpViIsolating valvessee diagramBall type, nickel-coated brass housing, threaded, PN 16VidIsolating valves (discharge side of duty pumps)2 per pumpCast iron butterfly type, lockable handle, flanged, PN 16VisIsolating valves (suction side of duty pumps)1 per pumpFull bore ball type, cast iron housing, lockable handle, flanged,PN 16, or butterfly type (for NK 100 pumps refer to Vid component)VrSpring-loaded non-return valvessee diagramPolymer or brass, PN 16VrdInspectable non-return valves (discharge side of dutypumps)1 per pumpFlap type with rubber seal, flanged, PN 16PrPressure switches2 per pumpNBR diaphragm, contacts of silver-plated copper, PN 16MPressure gauges2 per pump10 bar full scale deflection, PN 16, ¼" attachment, glycerine bathMvPressure and vacuum gauge1 per pump–0.5 - 6 bar, PN 16, ¼" attachmentMpFlowmeter for direct reading1Control panelsBrackets for control panelsBase frame8Quantity1 per pump2 pairs11 setFlange type, calibrated flowmeter, PN 16Painted metal cabinet, IP 54Galvanised steelGalvanised steel (for Hydro UNI-NB units)Galvanised/painted steel (for Hydro UNI-NK units)
Unit configurationHydro UNI-NB/NKConfiguration drawingThe following drawing shows the standard configuration of a Hydro UNI-NB/NK unit with two duty pumps. For anychanges or adaptations to specific requirements or additions of optional components and/or accessories not includedin our standard scope of supply, please consult Grundfos.CM: Discharge manifoldPs: Direct coupled dutypumpsPr2: Pressure switch (cut-in, cutout of pump)M: Pressure gauge withRm: multi-function valve on dutypump dischargemoc.odninketrt anec.wwwVid: Lockable isolating valvesSeparate control panels for eachpumpVrd: Inspectable non-returnvalve on discharge side of dutypumpAca: Priming circuitconnectionMp: FlowmeterVis: Lockable isolating valvesPr1: Pressure switch (dischargepressure)Acr: Bypass connectionHydro UNI-NB units are normally supplied pre-assembled on a common base frame. The pumps are fitted bymeans of bolts and the control panels are fastened onstands.Hydro UNI-NK units are normally supplied in separatemacro-components. This is due to the size and weightof individual parts and to facilitate shipping, handlingand positioning at the installation site. The separatecomponents are normallyMv: Pressure and vacuumgauge on duty pump suction sideTM03 2735 4805Separate pump inlets duty pump on its own base frame with pre-installedhydraulic components discharge manifold with accessories fitted test circuit manifold with isolating valves and a flowmeter pump control panels on separate stands jockey pump fastened to the same base frame asthe control panels.9
Unit descriptionHydro UNI-NB/NKOperating pressureJockey pump optionsHydro UNI-NB/NK units supply a maximum pressure of10 bar as specified in the UNI 9489 standard. But thecomponents and materials used are capable of operating at a pressure of 16 bar. The choice of materials provides operational compatibility with respect to twoaspects stipulated in the relevant standards:CR 3 pumps are standard as jockey pump. The following CR pump versions are also available as jockeypumps for Hydro UNI-NB/NK units: UNI 10779 specifies a rated pressure of systemcomponents for connection to the fire brigade fireengine of at least 1.2 Mpa (12 bar). CR 5, CR 10 or CR 15, see Jockey pump onpage 13 and Electrical data and performance dataof jockey pumps on page 19.AccessoriesThe following accessories are available for Hydro UNINB/NK units:moc.odninketrt anec.www UNI 9490 and UNI 10779 specify a minimum pressure for fire systems of at least 14 bar when exposed to hydrostatic test during start-up and duringperiodic functional tests twice a year at minimumtime spans of five months.Hydraulic componentsA manifold is fitted on the pump discharge side. An isolating valve and a non-return valve are fitted betweenthe discharge manifold and each individual pump. Anisolating valve is fitted on the suction port of each dutypump to allow the connection of separate suction pipes.As an option, a Hydro UNI-NB/NK unit may be fittedwith a discharge manifold sized for simultaneous operation of both duty pumps and/or a suction manifold(CPL version).To facilitate installation, all the pumps are fitted withcomponents designed for the connection of a primingcircuit in the case of suction lift installation.Further components can be identified in System diagram on page 8.In order to prevent damage caused by overheating dueto possible operation against closed isolating valve, thepumps are equipped with connection for a bypass.Inspection and checksAs prescribed by UNI 9490, check the performance ofthe unit at start-up and during periodic functional testsprescribed by the standard. The pressure delivered bythe unit is equal to the difference between the valuesread on the pressure gauge on the discharge and thepressure/vacuum gauge on the suction side.Carry out the flow rate measurements required duringstart-up and regular checks by directly reading a flowmeter fitted in a test manifold with isolating valves.Flowmeter configuration and measurement precisionshould be as required by UNI 9490.If determined by specific system requirements, the testmanifold and flowmeter may be fitted reversely to thefactory configuration during installation.10 timers to enable automatic duty pump cut-out whenpressure is maintained above the pump cut-in pressure for at least 20 minutes (according to UNI10779, this only applies to systems with fire hydrants); 24-litre, PN 16 diaphragm tanks with replaceablediaphragm; remote alarm devices for indication of- power failure- phase failure- start-up of duty pumps,with audible and visual alarm signals, equipped withbuffer battery (according to UNI 9490); 220 V locked power socket with fuses; device for periodic, automatic, programmable testing of duty pumps with indication of missing pumpperformance (not required by UNI 9490).In case you need other components or accessories,please contact Grundfos.Versions on requestThe following Hydro UNI-NB/NK versions are availableon request: with direct-on-line starting in stead of the standardstar-delta starting (from 11 kW and upwards) without flowmeter circuit with flowmeter supplied separately with discharge manifold designed for simultaneousoperation of both duty pumps with end-suction pumps of other sizes than described in this data booklet with performance levels exceeding the range described in this data booklet with more than two duty pumps with suction manifold (CPL version) with AISI 316 (DIN W.-Nr. 1.4401) stainless steelmanifolds with bronze impeller in duty pumps, see Materialspecification on page 11.
Duty pumpsGeneral description of duty pumpsThe duty pumps (or supply pumps, as they are called inUNI 9490) are designed in accordance with UNI 9489with specific reference toHydro UNI-NB/NKThe BAQE seal is not suitable for liquids containingabrasive particles. Modified versions are available asoptions. performance tolerance (according to ISO 9906 Annex A)Bearing bracket (NK)NK pumps include a bearing bracket with two sturdylubricated-for-life ball bearings. value for NPSHRMaterial specification maximum head.Material1Pump housingCast iron 250 UNI - ISO 1852Pump headCast iron 250 UNI - ISO 1853ImpellerCast iron 250 UNI - ISO 1853Impeller *Bronze GCuSn5Zn5Pb5 - UNI 7013/8A-724Pump shaft (NB)Stainless steel AISI 304 - UNI 6900/715Pump shaft (NK)Stainless steel AISI 420 - UNI 6900/716Mechanical shaftCarbon/Silicon carbide - EPDMseal7O-ringFPM8SpacerStainless steel AISI 304 - UNI 6900/719CoverCast iron 250 UNI - ISO 18510Air vent screwStainless steel AISI 304 - UNI 6900/71moc.odninketrt anec.wwwAll pumps are end-suction, single-stage, centrifugalpumps with volute casing, axial suction port and radialdischarge port, with flanges complying with DIN 2533.Rated performance and main dimensions comply withDIN/EN 733 (formerly DIN 24255).All pumps are dynamically balanced to guarantee reliability and durability.Operating conditionsWater temperature 0 C to 140 C (standard)Maximum operatingpressure1.6 Mpa (16 bar) up to 120 CMaximum inlet pres- Equal to the difference between 16 bar and thesuremaximum head of the specific pump modelInfluenced by actual NPSH value (max. 5.5 m),see Operating conditions on page 7Pumped liquidsThin, clean, non-explosive liquids, not containing solidsor fibres and mechanically and chemically non-aggressive to the pump materials.Maximum operating pressureThe DIN/EN 733 standard requires 1.0 MPa (10 bar).However, NB and NK are built to PN16 requirements,for a pressure of 1.6 Mpa (16 bars).* Optional except for NK 80/M, NK 80/P NK 100/C, NK 100/E, see Electrical data and performance data of duty pumps on page 18.Sectional drawings810341672Fig. 1 Sectional drawing, NB pumpDescription of constructionImpellerThe impeller is of the double-curved, closed type withsmooth blades ensuring high efficiency.All impellers are hydraulically balanced to compensatefor the axial thrust and to minimise the effect of load onthe shaft and seal.Mechanical shaft sealThe standard dimensions of the mechanical shaft sealcomply with DIN 24960 and is a Grundfos type BAQE.A channel in the pump head leading from the dischargeside to the shaft seal chamber ensures a constant flowof pumped liquid for cooling and lubrication.TM03 2765 4805NK pumps are of the long-coupled type.Suction liftPos. Component8931756TM03 3494 0406NB, NBU pumps are of the close-coupled type.Fig. 2 Sectional drawing, NK pump11
Duty pumpsHydro UNI-NB/NKFeet, coupling and designNB pumps are equipped with feet on the pump housing.NBU pumps are equipped with feet on the pump housing and on the motor.NK pumps are equipped with feet on the pump housing, on the bearing bracket and on the motor. All partsare fitted to a steel base frame according to DIN 23661,with feet fastened to the base frame by means of bolts.NB, NBU pumps are close-coupled to the electric motorvia a rigid cylindrical coupling (stub shaft concept).MotorThe motors of the duty pumps are sized according tothe specifications of UNI 9490, specifically with regardto the power required at any of the performance valueswithin the recommended fields of use, see Electricaldata and performance data of duty pumps on page 18.The motors are totally enclosed, fan-cooled, squirrelcage standard motors with main dimensions accordingto IEC and DIN standards.moc.odninketrt anec.wwwNK pumps are long-coupled to the electric motor via adirect coupling.TM03 3506 0406NB, NBU pumps are of the back pull-out design enabling removal and dismantling of the motor, impellerand shaft seal without disturbing the pump housing orpipework.Fig. 3 Schematic view of back pull-out principle of NB,NBU pump (NBU with feet on motor)TM03 3507 0406NK pumps are also of the back pull-out design enablingremoval and dismantling of the motor, bearing bracket,impeller and shaft seal without disturbing the pumphousing or pipework.Fig. 4 Schematic view of back pull-out principle of NKpump12Mounting designations accord- NB: B5ing to ISO 34-7NBU: B3 and B5NK: B3Supply voltage3 x 400 V, 50 HzEnclosure classIP 55Insulation classF, according to IEC 85Ambient temperatureMax. 40 CElectrical tolerancesCompliant with VED 0530 standards
Jockey pumpProduct descriptionA jockey pump serves the purpose of maintaining thepressure in the fire system. The jockey pump compensates automatically for any loss of pressure caused byleaks and thus prevents the duty pumps from startingunnecessarily.According to the terms of UNI 9490, the jockey pumpdoes not contribute to the total performance required ofthe unit (duty pumps).The standard version of the unit is equipped with aCR 3 jockey pump.Hydro UNI-NB/NKFeatures and benefitsThe vertical, multi-stage CR pumps from Grundfos offerthe following features and benefits:High efficiencyLow power consumption and, consequently,low costs during automatic dutyLow NPSHHigh suction flowAir evacuationMinimises damage in the event of operationwith uneven suction flowMechanical cartridgeshaft sealAllows inspection and routine maintenance tobe carried out conveniently on site without removing the motor or dismantling the pumpmoc.odninketrt anec.wwwIf a higher flow rate is required, other jockey pump models such as CR 5, CR 10 and CR 15 are available as anoption, see Electrical data and performance data ofjockey pumps on page 19.Grundfos CR pumps are vertical multistage centrifugalpumps with a standard Grundfos motor coupled to thepump shaft by means of a rigid coupling. They arehighly efficient and offer great mechanical and operational reliability.The pump has a base and a pump head. The chamberstack and outer sleeve are secured between the baseand pump head by means of staybolts. The base features in-line suction and discharge ports, with Grundfosoval and DIN flanges.The vital parts of the pump, such as shaft, outer sleeve,chambers and impellers are made of stainless steel.Outer sleeve sealedby O-ringsOffers high resistance to pressure shocks andis insensitive to temperature fluctuationsReinforced stop ringFor heavy-duty, reliable impeller rotationSilicon carbidebearing ringsHigh durability as they are more resistant towear and the effects of rotation with unevenlubricationOperating conditionsWater temperature0 C to 90 C (standard)Maximum operatingpressure1.6 Mpa (16 bar)Maximum inlet pres- Equal to the difference between 16 bar and thesuremaximum head of the specific pump modelSuction liftInfluenced by NPSH value (max. 3 m), see alsoOperating conditions on page 7Pumped liquidThin, clean, non-explosive liquids, not containing solidsor fibres and mechanically and chemically non-aggressive to the pump materials.13
Jockey pumpDescription of constructionHydro UNI-NB/NKSectional drawingMechanical shaft sealThe standard dimensions of the mechanical shaft sealcomply with DIN 24960 and is a Grundfos type HQQE.The shaft seal is not suitable for liquids containing abrasive particles. Modified versions are available asoptions.Material specificationPos.Component1Pump head *2Mechanical car- Tungsten carbide/tungsten carbide, EPDMtridge shaft sealPump shaft4Impellermoc.odninketrt anec.wwwStainless steel AISI 316 / UNI 6900/711102Stainless steel AISI 304 / UNI 6900/715Chamber6Pump base *Stainless steel AISI 304 / UNI 6900/717Bearing ring8Neck ring9Outer sleeve10Coupling guardStainless steel AISI 304 / UNI 6900/71ElastomersEPDMCast iron EN 200 ASTM 25B394857Silicon carbidePTFEStainless steel AISI 304 / UNI 6900/71* Cast iron parts corrosion-proofed by electro-coating6TM03 3498 22063MaterialCast iron EN 200 ASTM 25BFig. 5 Sectional drawing CR pumpElectric motorGrundfos CR pumps are equipped with a Grundfos MGthree-phase, two-pole, squirrel cage, totally enclosed,fan-cooled motor with dimensions complying with IECand DIN standards.14Mounting designationV 18 up to and incl. 4 kWV 1 for 5.5 kW and upwardsSupply voltage3 x 400 V, 50 HzEnclosure classIP 55Insulation classF, according to IEC 85Ambient temperatureMax. 40 CElectrical tolerancesTo IEC 34/EN 60034
Control panelsHydro UNI-NB/NKControl panels of duty and jockey pumpsThe duty pumps and the jockey pump are controlled via separate control panels allowing easy reading of gauges andsignals from their front doors. The starting method for motors with rated power up to and including 7.5 kW is direct-online (DOL); in order to avoid line overload, stress on rotating parts and wear of system components the starting methodis star-delta (SD) for motors with power ratings from 11 kW and upwards. Other stating methods, such as DOL insteadof SD, are available as options. The table below lists the components and functions available in the control panels. Ref.refers to Fig. 6 showing the front door of a control panel of a duty pump which is designed in compliance with UNI 9490requirements.AComponentDuty pumpzMains switch, lockablezzzFuse and contactor circuitTransformer with fuses for auxiliary circuitzAmmeterVoltmeterDVoltmeter selector 0-L1/L2-L2/L3-L1/L3-0zEMAN-0-AUT selector switchzSelector switch with key, onlyremovable when in position AUTzStart-stop buttons for test or manual operationzDuty pump Jockey pumpMains voltage onAuxiliary circuit supply onzHPump ready for operationzzIPump operatingzLVoltage to motor (two LEDs)zMVoltage or phase failure (twoLEDs) with relay and buffer batteryzzRelay operationPotential-free NO/NC-contact forremote indication of power and/orphase failure.zPotential-free NC-contact forremote indication that pump isoperating and pressure supplied.zAEMANL2/L30FAUTSTOPL1/L30zzOther outputszCDzzGzV0ComponentIndicator lightszBCL1/L2Ref.moc.odninketrt anecA.wwwzRelayFJockey pumpMetal cabinet IP 54STARTIBMGHILAUSILIARIIN TENSIONEPOMPAFERMAPOMPAIN MARCIATENSIONEALMOTOREMANCANZATENSIONE DI RETEAUXILIARYSUPPLY ONPUMP INSTAND-BYPUMPRUNNINGMOTORSUPPLY ONMAINSSUPPLY OFF0L1/L2L2/L3L1/L3TM03 3499 0406Ref.Fig. 6 Front door of control panel of duty pump15
InstallationRequirements to the roomThe UNI 9490 standard stipulates that a fire pump setfor fire fighting must be located in a room designedexclusively for fire systems.The UNI 10779 standard on fire hose reel and hydrantsystems allows the installation of a fire pump set for firefighting in rooms shared with other engineering systems provided the fire load in the room is low.The Hydro UNI-NB/NK units must be installed in aweatherproof, frost-free, well-ventilated room so as toensure that the electric motors are satisfactorily cooled.According to UNI 9490 the ambient temperature mustbe below 40 C when the pumps are operating at maximum load.Hydro UNI-NB/NKTo facilitate installation, the pumps are fitted with components designed for the connection of a priming circuitin the case of suction lift conditions.To ensure the due precision of the flowmeter, follow theinstructions in the installation and operating instructions when connecting the flowmeter downstream.If determined by specific system requirements, the testmanifold and flowmeter may be fitted reversely to thefactory configuration during installation.To ensure correct operation of the jockey pump, theunit must be equipped with at least two 24-litre, PN 16diaphragm tanks, see Product description on page 4,System diagram on page 8 and Accessories onpage 10. If necessary, additional diaphragm tanks maybe connected to the discharge manifold.moc.odninketrt anec.wwwThe unit must be placed with sufficient clearance infront of it and at the sides for inspection, testing andmaintenance. The unit must be placed on a flat, evensurface, such as a concrete floor or foundation. If theunit is not equipped with vibration dampers, it may bebolted direct to the floor or foundation.Requirements to the pipeworkThe pipes connected to the unit must be of appropriatesize. Provide expansion joints on the discharge manifold - and the suction manifold, if fitted - to prevent resonance or mechanical stress due to incorrectalignment.Always install pipe hangers on both the discharge andsuction sides to ensure that the weight of the pipesdoes not rest on the manifold (including the suctionmanifold, if fitted) or on the pump.16Requirements to control panelsTo meet the requirements of UNI 9490, connect theduty pump control panels with remote alarm equipmentto indicate power, phase failure and start-up of pumps.The alarm equipment should give aud
Grundfos Hydro UNI-NB/NK automatic fire pump sets are typically used in fire fighting applications for supply-ing water to fire hose reels, fire hydrants or sprinkler systems. The Hydro UNI-NB/NK fire pump sets described in this data booklet cover all flow rates up to 320 m3/h and heads up to 100 m
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FIRE TOPPER Fire Bowl User Manual Home » FIRE TOPPER » FIRE TOPPER Fire Bowl User Manual Contents [ hide 1 FIRE TOPPER Fire Bowl 2 Setting Up Your Fire Topper Fire Bowl 2.1 Set-Up 3 Placement and Location 3.1 Liquid Propane Tank 4 Using your Fire Topper Fire Bowl - For your safety, read before lighting. 5 Cleaning, Maintenance, Storage 6 .
One of the first fire trucks built in the late. 1800's was equipped with an A-C Fire Pump. For over 100 years, A-C Fire Pump Systems. has been on the forefront in developing, designing and custom-building a wide range. of fire pump systems including prefabricated packages and house units that meet every fire. protection need. A-C Fire Pump is .
One of the first fire trucks built in the late 1800's was equipped with an A-C Fire Pump. For over 80 years, A-C Fire Pump Systems has been on the forefront in developing, designing and custom-building a wide range of fire pump systems including prefabricated packages and house units that meet every fire protection need. A-C Fire Pump is not only
Diesel engine fire pump controllers are designed to automatically start a diesel engine driven fire pump upon detection of an automatic start pressure switch in the fire protection system. A diesel engine fire pump controller . The purpose of this test is to verify the normal operation of the fire pump, the engine and the controller. .
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