Owner's manual

4 9
Electrical Power Surge Protection
Anelectricalpowersurgeorspikecantravelonthesupplylinesandcause
seriousdamagetoyourelectricalequipment.
Iftheinstallationissubjecttoelectricalpowersurgesorlightningwe
stronglyrecommendtheuseofsuitableadditionalsurgeprotectiondevices
onALLelectricalequipment.
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.
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ltershouldbeinstalled
beforethepumptoavoidblockingofwaterways.Laysuctionpipeata
constantgradienttoavoidairpocketswhichmayreducepumpefciency.
Do not use pipe thread sealing compounds on any part of this
pump. ONLY use Teon sealing tape.
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.
Trouble Shooting Check List
A) MOTOR RUNS WHEN SWITCHED ON BUT DOES NOT PUMP.
1. Suctionlineandpumpbodynotlledwithwater.
2. Airleaksinsuctionlinesorsuctionpipenotunderwater.
3. Airtrappedinsuctionlines(alsopossiblewithoodedsuctiondueto
unevenriseinpiping;eliminatehumpsandhollows).
4. Nowateratsourceorwaterleveltoolow.
5. Valveonsuctionlineclosed.
B) PUMP SWITCHES ON AND OFF FREQUENTLY (CYCLING).
1. Checkthattankairpressureiscorrect.
2. Leakingtaps,oatvalvesetc.Checkplumbing.
3. Leakingcheckvalve/footvalve.
4. PressureSwitchmayrequireadjustmenttocaterforoodedsuction
installations–consultyourDaveydealerforadvice.
C) MOTOR DOESN’T START WHEN SWITCHED ON
1. Powernotconnected.
2. Supplyvoltagetoolow.
3. “Overtemperature”cutouttripped.*
4. Motornotfreetoturne.g.ajammedimpeller.
5. Internalmotorfault.
NOTE: For protection, single phase Davey pump motors are tted with
an automatic “over temperature” cut-out. Constant tripping of this
overload device indicates a problem e.g. Low voltage at pump, excessive
temperature (above 50°C) in pump enclosure.
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.
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. If the electrical supply lead of this
pressure system is damaged, it must only be replaced by authorised Davey
service personnel as special tools are required.
NOTE: For protection, the Davey pump motors are 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.