Priming and Operation
Thepumpbodyandsuctionlineshouldbelledbypouringwaterintothepriming
plugholeadjacenttotheoutlet.Screwontheprimingplug,closethedischarge
valvetwothirdsandswitchpumpon.Graduallyopenthedischargevalveandthe
pipelinells.
Inhighsuctionliftconditions,thepumpmaymakeanoisesimilartoitpumpingsand
orgravel;thiswillusuallybecavitationoccurring.Reduceowuntilthecavitation
noisestops.Oncethedischargepipelinellsyoucanopenthevalve.Ifthe
cavitationnoisereturns,closethedischargevalveslightlyuntilitstops.
Inthecaseofinstallationswherethereisapositivesuctionpressure(ooded
suction)removethepump’sprimingplugandslowlyopenthegatevalveinthe
suctionpipingtoallowwatertoenterthepumpfromthesuctionlineuntilallairis
expelled.Replacetheprimingplugandfullyopenthegatevalveinthesuctionline
andswitchthepumpon.
Primeshouldbeestablishedalmostimmediately,however,itmaybenecessaryto
re-primeseveraltimesonsomeinstallationsbeforefullyestablishedoptimumpump
performanceisobtained.
Ifpumprunsbutwillnotpumpwater,checkforthefollowing:
1. Suctionlineandpumpbodynotlledwithwater.
2. Leakingfootvalve.
3. Airleaksinsuctionlines.
4. Airtrappedinsuctionline(evenonoodedsuction)possiblywhenthereisan
unevenriseinthepipingfromwatertopump(eliminate“humpsandhollows”)
8 5
Threephasemodelswithoutputpowerof1.4kWandoverhavebeendesignedto
allowforconnectioneithersideoftheCapacitorCover(marked“A”ingureone)
onthemotor.(NOTE:Threephasemotorsdonothavecapacitorsttedinthe
CapacitorCover).
Thisisachievedbywayofeitherofthetwo19mmaccessholes(marked“B”
ingureone).Theaccessholesaredesignedtoacceptmoststandardcable
grommets.Theunusedholecanbesealedbyinsertingtheplugenclosedwiththe
pump.ToconnectathreephasePressurePumpstartbyremovingtheTerminal
Cover(“C”)
InaccordancewithAS3350.2.41weareobligedtoinformyouthatthispumpisnot
tobeusedbychildrenorinrmpersonsandmustnotbeusedasatoybychildren.
Ashortfourcoreex(“D”)isttedfromthemotorterminals(“E”).Thisleadis
insertedthroughtheblankinggrommet(“F”).
Pressureswitchorothercontrolleads(“G”)canbettedaswell.Incomingpower
(“H”)canbettedthroughthepreferredaccesshole,andterminatedasshownin
FigureThree.Aterminationkitisavailableifrequired.
Inserttheblankinggrommet(“F”)intothecapacitor
cover(“A”).Fixtheshortlead(“D”)intothepath
providedinthenon-driveendshieldandreplacethe
terminalcover(“C”).
IMPORTANT NOTE: THREE PHASE MODELS ONLY
Whentheunitisconnectedandoperatingthephasebalanceshouldbechecked.
Thisshouldbewithin5%variation.“Rolling”theleadsmayhelptoimproveasmall
unbalance,butmajorphaseunbalancewillusuallybeattributedtoaninputpower
unbalance.Thismustbeaddressedbeforethepumpisused.
IP55 Compliant Connection
Forsomeinstallations,suchaswetareasindairies,thepumpisrequiredtobeIP55
compliant.TheHMpumpisIP55compliant(modelsover1.05kWareIP56).
3. Switchon.
4. Primeshouldestablishalmost
immediatelywithastrong
owofwater,however,in
someinstallationsitmay
benecessarytorepeat
theaboveoperationto
removeallairfromthe
system.
1. Ensureoutletnearestto
pumpisopen.
2. Fillpumpbodyandsuctionline
throughprimingplugholelocated
abovesuctioninletandreplaceplug.
Before nalising wiring connections, check that motor rotates in direction of
arrow (clockwise when shaft is viewed from wiring connection end except
HM270 models which rotate anti-clockwise). To alter rotation, change any
two power leads at motor terminals.
Power connections and wiring must be carried out by an Authorised
Electrician.
WARNING: Some insects, such as small ants, nd electrical devices
attractive for various reasons. If your pump enclosure is susceptible to
insect infestation you should implement a suitable pest control plan.
Note: Minimum three phase voltage supply at the motor must not fall below
374 volts, otherwise motor damage may result which is not claimable under
Guarantee.
Do not run pump dry or allow to run continuously in a loss of prime
condition. If this pump is allowed to pump water containing sand or other
abrasive material, the effective life of the pump will be shortened.
