Jandy VS FloPro - 1.2 Pool Pump Suction Entrapment Prevention Guidelines

 



Thefollowingguidelinesprovideinformationforpumpinstallationthatminimizesriskofinjurytousersof
pools,spas,andhottubs:
-Thepumpsuctionsystemmustprovideprotectionagainstthehazardsof
suctionentrapment.
-Allsuctionoutletsmusthavecorrectlyinstalled,screw-fastenedcoversin
place.Allsuctionoutlet(drain)coversmustbemaintained.Draincoversmustbelisted/certiedtothe
latestpublishededitionofANSI/ASMEA112.19.8.Theymustbereplacedifcracked,broken,ormissing.
-Provideatleasttwo(2)hydraulically-balancedmaindrains,
withcovers,assuctionoutletsforeachcirculatingpumpsuctionline.Thecentersofthemaindrains
(suctionoutlets)onanyone(1)suctionlinemustbeatleastthree(3)feetapart,centertocenter.See
Figure1onPage7.
Thesystemmustbebuilttoincludeatleasttwo(2)suctionoutlets(drains)connectedtothepump
wheneverthepumpisrunning.However,iftwo(2)maindrainsrunintoasinglesuctionline,thesingle
suctionlinemaybeequippedwithavalvethatwillshutoffbothmaindrainsfromthepump.Thesystem
shallbeconstructedsuchthatitshallnotallowforseparateorindependentshutofforisolationofeach
drain.SeeFigure1onPage7.
Morethanone(1)pumpcanbeconnectedtoasinglesuctionlineaslongastherequirementsaboveare
met.
-Themaximumwatervelocitythroughthesuctionttingorcoverforanysuctionoutlet
mustbe1.5feetpersecond,unlesstheoutletcomplieswiththelatestpublishededitionofANSI/ASME
A112.19.8,thestandardforSuction Fittings For Use in Swimming and Wading Pools, Spas, Hot Tubs,
and Whirlpool Bathtub Applications.Inanycase,donotexceedthesuctiontting’smaximumdesigned
owrate.
If100%ofthepump’sowcomesfromthemaindrainsystem,themaximumwatervelocityinthepump
suctionhydraulicsystemmustbesix(6)feetpersecondorless,evenifone(1)maindrain(suction
outlet)iscompletelyblocked.Theowthroughtheremainingmaindrain(s)mustcomplywiththelatest
publishededitionofANSI/ASMEA112.19.8,thestandardforSuction Fittings For Use in Swimming and
Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub Applications.
-Suctionoutletcoversmusthavebeentestedbyanationallyrecognized
testinglaboratoryandfoundtocomplywiththelatestpublishededitionofANSI/ASMEA112.19.8,the
standardforSuction Fittings For Use in Swimming and Wading Pools, Spas, Hot Tubs, and Whirlpool
Bathtub Applications.
-Fittingsrestrictow;forbestefciencyusefewestpossiblettings(butatleasttwo(2)suction
outlets).
Avoidttingsthatcouldcauseanairtrap.
PoolcleanersuctionttingsmustconformtoapplicableInternationalAssociationofPlumbingand
MechanicalOfcials(IAPMO)standards.




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