Manual

Choosing a Site
Chooseasitewitharmbaseandasclose
tothewatersourceaspossiblewithcorrect
powersupply.Makesureyourpressure
systemisalwaysconnectedtoanadequate,
reliablesourceofcleanwater.
Housing your Davey Pressure System
Toprotectyourpressuresystemfromtheweather,
makesurethepumphouseisbothwaterproof,
frostfreeandhasadequateventilation.Thepump
shouldbehorizontally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.
Agoodqualitynon-returnvalvemustbe
installedinthepressurepumpoutletpipework
beforethehotwaterservice.Failuretoinstall
thisnon-returnvalvemayresultinpump
damage.Suchdamageisnotcoveredby
guarantee.
Connection of Mains Scheme or Town Water Supply to either Suction or
Discharge of Pumps & Pressure Systems
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 Products Pty Ltd can
not accept responsibility
for loss or damage
resulting from incorrect or
unauthorised installations.
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.
Pipe Connections
ForbestperformanceuseP.V.C.orpolythenepipesatleastthesame
diameterasthepump’sinletanddeliveryoutletopenings.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.Topreventstrain
onpumpthreadsalwayssupportheavyinletandoutletpipes.Ifthereisa
likelihoodthewatersupplymaycontain
solidparticlessuchaspiecesofplantor
vegetablematter,asuctionstrainershould
beinstalledbeforethepumptoavoid
blockingofthepump.Laysuctionpipeat
aconstantgradienttoavoidairpockets
whichmayreducepumpefciency.
Where to use Check Valves and Foot Valves
Installationswithasuctionliftover1mrequireagoodqualityfootvalveto
avoidlossofprime.Inthiscase,thepoppetvalveinsidethepumpshould
beremoved.Installationswithoodedsuctionrequireagatevalvesowater
supplycanbeturnedoffforpumpremovalandservicing.
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pres-
suresystem.Allcomponentshavebeendesignedandmanufacturedtogive
troublefree,reliableoperation.
1. Pressuretank
2. Pressureswitch
3. Deliveryoutlet
4. Suction inlet
5. Pump body
6. Motor
7. Base
8. Primingplug
Connectionsizes:
Model Inlet Outlet
X50 1” 1”
X70 1
1
/
4
” 1”
X90 1
1
/
4
” 1”
Do not use pipe thread sealing compounds on any part of this pump.
ONLY use Teon sealing tape.
Before installing your new pump, please read all instructions carefully as fail-
ures caused by incorrect installation or operation are not covered by the guar-
antee. Your Dynajet® system is designed to handle clean water. It should not
be used for any other purpose without specic referral to Davey. The use of the
pump to handle ammable, corrosive and other materials of a hazardous nature
is specically excluded.
Priming and Operation
1.Removeprimingplugandll
pumpandsuctionline(onooded
suction,simplyopengatevalve
 topump).Whenfull,
 replaceprimingplug.
2.Ensureoutletnearesttopumpis
open.
3.Ensureallvalvesinsuctionlineare
openandswitchon.
4.Primeshouldestablishalmost
immediatelyandastrongow
ofwatershouldbe
evidentfromthe
outlet.Allowwaterto
owfor10-20seconds
toexpelairthenclose
outlet.
5.Ifnoowisevidentfromtap,
switchoffatpowerpointandrepeat
fromstep1ensuringthereisan
adequatesupplyofwateravailable
tothepump.
Power Connection
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: 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.
IMPORTANT
For Automatic Pressure Pumps Installed with a Mains Pressure Hot
Water System.
Abrasive Materials
The pumping of abrasive materials will cause damage to the
pressure system which will then not be covered by the guarantee.