grundfos data booklet

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2SP A, SPSubmersible pumps2. Submersible pumpsFeatures and benefitsA wide pump rangeGrundfos offers energy-efficient submersible pumpsranging from 1 to 280 m 3 /h. The pump range consistsof many pump sizes, and each pump size is availablewith an optional number of stages to match any dutypoint.High pump efficiencyOften pump efficiency is a neglected factor comparedto the price. However, the observant user will noticethat price variations are without importance to watersupply economics compared to the importance ofpump and motor efficiencies.ExampleWhen pumping 200 m 3 /h at a head of 100 m for aperiod of 10 years, EUR 60,000 will be saved if apump/motor having a 10 % higher efficiency is chosenand the price is EUR 0.10 per kWh.Eta[%]1009080706050403020100Fig. 11A50 Hz3A 5A 8A 14A 17 30 60 95 1602A46 77 125 2150,1 0 15 10 50 100 500Q [m³/h]Pump/motor efficiencies in relation to flowTM00 7255 1898Material and pumped liquidsGrundfos offers a complete range of pumps andmotors which, as standard, are made completely ofstainless steel to EN 1.4301 (AISI 304). This ensuresgood wear resistance and a reduced risk of corrosionwhen pumping ordinary cold water with a minorchloride content.A pump range made of upgraded stainless steel isavailable for more aggressive liquids:SP N: EN 1.4401 (AISI 316)SP R: EN 1.4539 (AISI 904L).Alternatively, a complete range of zinc anodes forcathodic protection is available. See page 87. Forexample, this may be advisable for seawaterapplications.For slightly polluted liquids containing for example oil,Grundfos offers a complete range of stainless-steelSP NE pumps to EN 1.4401 (AISI 316) with all rubberparts made of FKM.Fig. 2Various SP pumpsGr6389 2806Low installation costsStainless steel means low weight facilitating thehandling of pumps and resulting in low equipmentcosts and reduced installation and service time.6
SP A, SP2Bearings with sand channelsAll bearings are water-lubricated and have a squaredshape enabling sand particles, if any, to leave the pumptogether with the pumped liquid.Inlet strainerThe inlet strainer prevents particles over a certain sizefrom entering the pump.Fig. 3BearingTM00 7301 1096TM00 7302 1096Submersible pumpsFig. 4Inlet strainerNon-return valveAll pumps have a reliable non-return valve in the valvecasing preventing backflow in connection with pumpstoppage.Furthermore, the short closing time of the non-returnvalve means that the risk of destructive water hammer isreduced to a minimum.The valve casing is designed for optimum hydraulicproperties to minimise the pressure loss across the valveand thus to contribute to the high efficiency of the pump.Valve flapTM01 2499 1798Fig. 5Non-return valvePriming screwAll Grundfos pumps with radial impellers are fitted with apriming screw. Consequently, dry running is preventedbecause the priming screw will ensure that the pumpbearings are always lubricated.SP pumps with semi-axial impellers require no primingscrew. The pumps are primed automatically.It applies to all pump types, however, that neither pumpnor motor will be protected against dry running if thewater table is lowered to a level below the pump inlet.TM00 7304 1096Fig. 6Priming screwStop ringThe stop ring prevents damage to the pump duringtransport and in case of up-thrust in connection withstart-up.The stop ring, which is designed as a thrust bearing,limits axial movements of the pump shaft.The stationary part of the stop ring (A) is secured in theupper chamber.The rotating part (B) is fitted above the split cone (C).ABCTM01 3327 3898Fig. 7Stop ring (rotating and stationary parts) and splitcone7
Page 1 and 2: GRUNDFOS DATA BOOKLETSP A, SPSubmer
Page 3 and 4: SP A, SP11. General descriptionPerf
Page 5: SP A, SP1Pump rangeType SP 1A SP 2A
Page 9 and 10: SP A, SP33. Submersible motorsFeatu
Page 11 and 12: SP A, SP3Lightning protectionThe sm
Page 13 and 14: SP A, SP3Material specification for
Page 15 and 16: SP A, SPPerformance curves and tech
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SP A, SPPerformance curves and tech
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SP A, SP55. Electrical data1 x 230
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SP A, SP53 x 400 V, submersible ind
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SP A, SP53 x 500 V, submersible mot
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SP A, SP66. AccessoriesCUE frequenc
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SP A, SP6The CUE is the right choic
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SP A, SP6IO 112 moduleProduct Descr
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SP A, SP6Connecting piecesThe table
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SP A, SP6ProductTM04 4980 2309Descr
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SP A, SP6Zinc anodesApplicationsCat
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SP A, SP6PR 5714 with Pt100 sensorT
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SP A, SP6CU 220 with Pt1000 sensorT
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SP A, SP77. Energy consumptionEnerg
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SP A, SP8Cable dimensions at 3 x 40
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SP A, SP99. Table of head lossesHea
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SP A, SP1010. Further product docum
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