Davey HM Series User manual

Please pass these instructions on to the operator of this equipment.
Installation and
Operating Instructions
for HM Series
Electric Pumps
WARNING: Failure to follow these instructions and comply with all applicable
codes may cause serious bodily injury and/or property damage.
WARNING : The pump and associated pipework operate under pressure.
Under no circumstances should the pump or associated pipework be
disassembled unless the internal pressure of the unit has been relieved.
Failure to observe this warning will expose persons to the possibility of
personal injury and may also result in damage to the pump, pipework or other
property.
NOTE: Prior to installation remove the red transport
plugs & associated seals from the suction and/or
discharge ports.
Davey®Repair or Replacement Guarantee
In the unlikely event in Australia or New Zealand that this Davey product develops any malfunction
within two years of the date of original purchase due to faulty materials or manufacture, Davey will at
our option repair or replace it for you free of charge, subject to the conditions below.
Should you experience any difculties with your Davey product, we suggest in the rst instance that
you contact the Davey Dealer from which you purchased the Davey product. Alternatively you can
phone our Customer Service line on 1300 367 866 in Australia, or 0800 654 333 in New Zealand, or
send a written letter to Davey at the address listed below. On receipt of your claim, Davey will seek to
resolve your difculties or, if the product is faulty or defective, advise you on how to have your Davey
product repaired, obtain a replacement or a refund.
Your Davey two Year Guarantee naturally does not cover normal wear or tear, replacement of product
consumables (i.e. mechanical seals, bearings or capacitors), loss or damage resulting from misuse
or negligent handling, improper use for which the product was not designed or advertised, failure to
properly follow the provided installation and operating instructions, failure to carry out maintenance,
corrosive or abrasive water or other liquid, lightning or high voltage spikes, or unauthorized persons
attempting repairs. Where applicable, your Davey product must only be connected to the voltage
shown on the nameplate.
Your Davey two Year Guarantee does not cover freight or any other costs incurred in making a claim.
Please retain your receipt as proof of purchase; you MUST provide evidence of the date of original
purchase when claiming under the Davey two Year Guarantee.
Davey shall not be liable for any loss of prots or any consequential, indirect or special loss, damage
or injury of any kind whatsoever arising directly or indirectly from Davey products. This limitation
does not apply to any liability of Davey for failure to comply with a consumer guarantee applicable to
your Davey product under the Australian or New Zealand legislation and does not affect any rights or
remedies that may be available to you under the Australian or New Zealand Consumer Legislation.
In Australia, you are entitled to a replacement or refund for a major failure and for compensation for
any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired
or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major
failure.
Should your Davey product require repair or service after the guarantee period; contact your nearest
Davey Dealer or phone the Davey Customer Service Centre on the number listed below.
For a complete list of Davey Dealers visit our website (davey.com.au) or call:
* Installation and operating instructions are included with the product when purchased new.
They may also be found on our website.
P/N 400559-6 supersedes P/N 400559-5
AUSTRALIA
Customer Service Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph: 1300 367 866
Fax: [phone]
Website: davey.com.au
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517
NEW ZEALAND
Customer Service Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph: 0800 654 333
Fax: [phone]
Website: daveynz.co.nz
® Davey is a registered trade mark of Davey Water Products Pty Ltd.
© Davey Water Products Pty Ltd 2011.

2 11
Prior to using this pump you must ensure that:
• Thepumpisinstalledinasafeanddryenvironment
• Thepumpenclosurehasadequatedrainageintheeventofleakage
• Anytransportplugsareremoved
• Thepipe-workiscorrectlysealedandsupported
• Thepumpisprimedcorrectly
• Thepowersupplyiscorrectlyconnected
• Allstepshavebeentakenforsafeoperation
AppropriatedetailsforalloftheseitemsarecontainedinthefollowingInstallation
andOperatingInstructions.Readtheseintheirentiretybeforeswitchingonthis
pump.IfyouareuncertainastoanyoftheseInstallationandOperatingInstructions
pleasecontactyourDaveydealerortheappropriateDaveyofceaslistedonthe
backofthisdocument.
Congratulationsonyourpurchaseofahighquality,AustralianbuiltDavey
multistagepump.Allcomponentshavebeendesignedandmanufacturedtogive
troublefree,reliableoperation.
General
Applications
Pumpsforclearliquids,freeofabrasivesinresidential,agricultural,industrial,and
otherapplications.
InaccordancewithAS3350.2.41weareobligedtoinformyouthatthispumpisnot
tobeusedbychildrenorinrmpersonsandmustnotbeusedasatoybychildren.
1. PrimingPlug
2. DischargeOutlet
 (1”BSPF)
3. SuctionInlet(11/4”BSPF)
4. PumpBody
5. Motor
Specications
Max.servicepressure: 1000kPa
Max.inletpressure: 600kPa
Liquidtemperaterange: -15to+105oC
Ambienttemperature: 0to50oC
Suctionhead: dependsonNPSHofpump
Before installing your new pump, please read all instructions carefully as failures
caused by incorrect installation or operation are not covered by the guarantee. Your
HM Electric Pump is designed to handle clean water. The pump should not be used
for any other purpose without specic referral to Davey. The use of the pump to
pump ammable, corrosive and other materials of a hazardous nature is specically
excluded.
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2
1
4
3

Choosing a Site
Chooseasitewitharmbaseasclosetothewater
sourceaspossiblewithcorrectpowersupply.Makesure
yourpumpisalwaysconnectedtoanadequate,reliable
sourceofcleanwater.
Housing your Davey Pump
Toprotectyourpumpfromtheweather,make
surethepumphouseisbothwaterproof,frost
freeandhasadequateventilation.
Thepumpshouldbemountedonarmbase
allowingfordrainage,toavoiddamageto
ooringetc.,thatovertimemayoccurfrom
leakingpipejointsorpumpseals.Donotmount
thepumpvertically.Neverplaceammable
materialsonornearyourpump.
Power Connection
Single Phase
Thesinglephasemodelswhicharesuppliedwitha10ampplugmaybeplugged
intoastandard10ampoutlet.Modelwiththespecial15amppowerplugmayonly
beusedwiththeappropriate15amp220/250Vpoweroutlet(15amppoweroutlets
areusuallyspeciallyprovidedbyanelectrician).
Alwaysensurethattheearthconductorintheleadisconnectedtoagoodearth.
AllsinglephaseModelshaveautomaticre-setthermaloverloadprotectionbuilt
in,i.e.shouldoverloadonmotorcausethermaltoopencircuitandswitchmotor
off,itwillautomaticallyre-setandswitchmotoronwhenmotorhascooleddown
sufciently,usuallywithinafewminutes.
The electrical connections and checks must be made by a qualied
electrician and comply with applicable local standards. Poor installation
or poor power supply may even result in electrical res!
Connect lead to power supply designated on pump label, do not use
long extension leads as they cause substantial voltage drop, poor pump
performance and may cause motor overload.
NOTE:
1. Ensure motor is connected to power supply specied on nameplate.
2. Avoid long extension leads as they can cause substantial voltage drop
and operating problems.
3. Although the Davey electric motor is specically engineered to perform
on a range of power supply voltages, malfunctions or failure caused by
adverse voltage supply conditions are not covered under guarantee.
In accordance with AS 3350.2.41 we are obliged to inform you that this
pump is not to be used by children or inrm persons and must not be used
as a toy by children.
10 3
*NOTE “MOTOR PROTECTION DEVICE” :
For protection, the Davey pump motor is tted with an automatic reset
thermal overload, constant tripping of this overload indicates a problem
e.g. low voltage at pump, excessive temperature (above 50°C) in pump
enclosure.
WARNING: When servicing or attending pump, always ensure power is
switched off and lead unplugged. Electrical connections should be serviced
only by qualied persons.
WARNING: Automatic reset thermal overloads will allow the pump to restart
without warning. Always disconnect the pump motor from the electrical supply
before maintenance or repairs.
WARNING: Do not use hydrocarbon based or hydrocarbon propelled
sprays around the electrical components of this pump.
Care should also be taken when servicing or disassembling pump to avoid
possible injury from hot pressurised water. Unplug pump, relieve pressure
by opening a tap on the discharge side of the pump and allow any hot water
in the pump to cool before attempting to dismantle.
IMPORTANT:
DO NOT USE petroleum based uids or solvents (e.g. Oils, Kerosene,
Turpentine, Thinners, etc) on the plastic pump components or seal
components.

4 9
Note: 1. Longextensionleadsshouldbeavoidedastheyoftenhaveinsufcient
currentcarryingcapacitytorunelectricmotors,hencetheycancause
substantialvoltagedropandoperatingproblems.
 2. Minimumvoltageattheelectricmotormustnotfallbelow216.
 3. Iftheelectricalttingsinyourcountrymakeitnecessarytoremovethe
plugfromtheleadxedtothemotorcareshouldbetakentoensure
thattheearthconductorgreen/yellowintheleadisproperlyconnected
toagoodearth.Thisworkmustonlybeundertakenbyanauthorised
electrician.
Three Phase
SomeHMmodelsarealsoavailableas3phase
modelfor50Hz,nominal415voltpowersupply.A
recommendedwiringdiagramcanbefoundinsidethe
capacitorcover(seegureonebelow).Threephase
unitsmustbewiredinbyanauthorisedelectricianin
conjunctionwithacontactorwhichhas“quicktrip”(M10)
overloadssetatnameplatecurrent.
Daveyrecommendtheuseofoverloadswhich
alsohavetheabilitytodetect“singlephasing”
or“droppedphase”conditionsinthepower
supply.
Threephasemodelswithoutputpowerof
below1.4kWhavebeendesignedtoprovide
cableentryontherighthandsidewhenviewed
fromthenon-driveorfanendofthemotor.A
terminalblockisprovidedunderthecapacitor
cover.Note:Threephasemotorsdonothavecapacitorsttedinthe
capacitorcover.
Accesstotheterminalblockisachievedbyremovalofthefancowl
-seeFigureA.Beforeprisingthefancowlensuretheretainingscrew
hasbeenremoved.
Thecapacitorcoverscrewisthenremoved,allowingthecovertobe
lifted(FigureB).Oncethewiringhasbeencompletedand
checked,ensurethesupplycableisrunalongthecable
access,thecapacitorcoverwillclampthesupplycableonceit
isre-installed.Replacethefancowlandensurethefancowl
retainingscrewisre-installedcorrectly.
Trouble Shooting Check List
MOTOR OPERATING BUT NOT PUMPING
1. Suctionlineandpumpbodynotlledwithwater.
2. Leakingfootvalve.
3. Airleaksinsuctionlinesorsuctionpipenotunderwater.
4. Airtrappedinsuctionlines(alsopossiblewithoodedsuction)duetouneven
riseinpiping(eliminatehumpsandhollows).
5. Nowateratsourceorwaterleveltoolow.
6. Valveonsuctionordeliverylinesclosed.
MOTOR NOT RUNNING
1. Powernotconnected.
2. Supplyvoltagetoolow.
3. Overloadtripped.
4. Motornotfreetoturne.g.ablockedimpeller.
5. Internalmotorfault.
MOTOR RUNS FOR SOME TIME THEN STOPS - RESTARTS AUTOMATICALLY
AFTER SHORT TIME
Overloadtrippinginmotor - lowvoltageatmotorterminals
  - motorindirectsunshineorin“hotbox”
  - motornotfreetoturn(eg:blocked)
WARNING:
DO NOT RUN DRY.
DO NOT RUN WITH LOSS OF PRIME.
DO NOT PUMP WATER CONTAINING ABRASIVE MATERIALS.
Figure A
Figure B
WARNING: Automatic reset thermal overloads will allow the pump to restart
without warning. ALWAYS disconnect the pump motor from the electrical
supply before maintenance or repairs.

Priming and Operation
Thepumpbodyandsuctionlineshouldbelledbypouringwaterintothepriming
plugholeadjacenttotheoutlet.Screwontheprimingplug,closethedischarge
valvetwothirdsandswitchpumpon.Graduallyopenthedischargevalveandthe
pipelinells.
Inhighsuctionliftconditions,thepumpmaymakeanoisesimilartoitpumpingsand
orgravel;thiswillusuallybecavitationoccurring.Reduceowuntilthecavitation
noisestops.Oncethedischargepipelinellsyoucanopenthevalve.Ifthe
cavitationnoisereturns,closethedischargevalveslightlyuntilitstops.
Inthecaseofinstallationswherethereisapositivesuctionpressure(ooded
suction)removethepump’sprimingplugandslowlyopenthegatevalveinthe
suctionpipingtoallowwatertoenterthepumpfromthesuctionlineuntilallairis
expelled.Replacetheprimingplugandfullyopenthegatevalveinthesuctionline
andswitchthepumpon.
Primeshouldbeestablishedalmostimmediately,however,itmaybenecessaryto
re-primeseveraltimesonsomeinstallationsbeforefullyestablishedoptimumpump
performanceisobtained.
Ifpumprunsbutwillnotpumpwater,checkforthefollowing:
1. Suctionlineandpumpbodynotlledwithwater.
2. Leakingfootvalve.
3. Airleaksinsuctionlines.
4. Airtrappedinsuctionline(evenonoodedsuction)possiblywhenthereisan
unevenriseinthepipingfromwatertopump(eliminate“humpsandhollows”)
8 5
Threephasemodelswithoutputpowerof1.4kWandoverhavebeendesignedto
allowforconnectioneithersideoftheCapacitorCover(marked“A”ingureone)
onthemotor.(NOTE:Threephasemotorsdonothavecapacitorsttedinthe
CapacitorCover).
Thisisachievedbywayofeitherofthetwo19mmaccessholes(marked“B”
ingureone).Theaccessholesaredesignedtoacceptmoststandardcable
grommets.Theunusedholecanbesealedbyinsertingtheplugenclosedwiththe
pump.ToconnectathreephasePressurePumpstartbyremovingtheTerminal
Cover(“C”)
InaccordancewithAS3350.2.41weareobligedtoinformyouthatthispumpisnot
tobeusedbychildrenorinrmpersonsandmustnotbeusedasatoybychildren.
Ashortfourcoreex(“D”)isttedfromthemotorterminals(“E”).Thisleadis
insertedthroughtheblankinggrommet(“F”).
Pressureswitchorothercontrolleads(“G”)canbettedaswell.Incomingpower
(“H”)canbettedthroughthepreferredaccesshole,andterminatedasshownin
FigureThree.Aterminationkitisavailableifrequired.
Inserttheblankinggrommet(“F”)intothecapacitor
cover(“A”).Fixtheshortlead(“D”)intothepath
providedinthenon-driveendshieldandreplacethe
terminalcover(“C”).
IMPORTANT NOTE: THREE PHASE MODELS ONLY
Whentheunitisconnectedandoperatingthephasebalanceshouldbechecked.
Thisshouldbewithin5%variation.“Rolling”theleadsmayhelptoimproveasmall
unbalance,butmajorphaseunbalancewillusuallybeattributedtoaninputpower
unbalance.Thismustbeaddressedbeforethepumpisused.
IP55 Compliant Connection
Forsomeinstallations,suchaswetareasindairies,thepumpisrequiredtobeIP55
compliant.TheHMpumpisIP55compliant(modelsover1.05kWareIP56).
3. Switchon.
4. Primeshouldestablishalmost
immediatelywithastrong
owofwater,however,in
someinstallationsitmay
benecessarytorepeat
theaboveoperationto
removeallairfromthe
system.
1. Ensureoutletnearestto
 pumpisopen.
2. Fillpumpbodyandsuctionline
throughprimingplugholelocated
abovesuctioninletandreplaceplug.
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.

Flow
Over 1m
0.5m
Min
Foot Valve
(Not Supplied)
Flow
Check Valve
Figure A Figure B
Pipe Connections
ForbestperformanceuseP.V.C.orpolythenepipeatleastthesamediameteras
thepump’sinlet.Largerdiameterpipemaybeusedtominimiseresistancetoow
whenpumpinglonger
distances.
Use unions at pipe
connectionstoenable
easyremovaland
servicing.Usesufcient
tape to ensure airtight
sealandhandtightenonly,donotscrewconnectionsallthewayintosuctionport.
Topreventstrainonpumpthreadalwayssupportheavyinletandoutletpipes.
Laysuctionpipeataconstantgradienttoavoidairpocketswhichmayreducepump
efciency.
Connection to your Water Source
ABOVE GROUND WATER SOURCES
Installationswithoodedsuctionrequirea
gatevalvesowatersupplycanbeturnedoff
forpumpremovalandservicing.
Installaone-waycheckvalvein
thesuctionpipelinetoavoidwater
drainingbackpastthepumpwhile
notinoperationandcausingpossible
pumpdamage.
BELOW GROUND WATER SOURCES
Whenevertheinstallationpositionofthepumpishigherthanthelowestwaterlevel,
afootvalvettedtotheendofthesuctionpipeasillustratedin(A)belowisrequired.
Ensurethatthefootvalveisatleast1/2metrebelowminimumwaterlevel.
6 7
Spear Size Mesh Approx. Max. Capacity of Spear Point
11/4” (32mm) 60 15-23l/min or 200-300gal/hr
11/2” (38mm) 60 23-38l/min or 300-500gal/hr
2” (50mm) 60 38-75l/min or 500-1000gal/hr
NOTE: Be certain to select the spear point to suit the well conditions and
regulate the ow rate from the pump accordingly.
NOTE: DO NOT install the check valve at the pump or at the top of the
well. DO NOT run the pump without water.
SPEAR POINT INSTALLATIONS
WhenaHMisinstalledonaspearorwellpointacheckvalvetted
immediatelyontopofthespearpointitself,asshownin(B)above.
Dry-running protection
Toavoidaccidentallossofprimeofthepump,werecommendprotectingitwitha
suitabledevice.Note:damagefromdry-runningisnotcoveredbyguarantee.
Connection of Mains Scheme or Town Water Supply to either Suction or
Discharge of Pumps
MostWaterSupplyAuthoritieshavestrictregulationsregardingdirectconnectionof
pumpstomainswatersupplies.Inmostcasesanisolatingtankisrequiredbetween
mainssupplyandpump.Daveyalsorecommendthismethod.Directlyapplied
mainspressurecanexceedpumpoperatingpressureanddamagepump.
Davey Water Products Pty Ltd
can not accept responsibility
for loss or damage resulting
from incorrect or unauthorised
installations.
MAINS WATER
NOTE: HM models require a foot valve or check valve to be installed in
the suction pipework in suction lift applications as appropriate.
MAINS WATER
DO NOT USE THREAD SEALING COMPOUNDS, HEMP OR PIPE DOPE!
NOTE: Suction leaks are the largest
cause of poor pump performance
and are difcult to detect. Ensure all
connections are completely sealed using
thread tape only. DO NOT USE SEALING
COMPOUNDS OR PIPE DOPE.