NOTE: Prior to installation remove the red transport plugs & associated seals from the suction and/or
discharge ports.
WARNING: Failure to follow these instructions and comply with all applicable codes may cause serious bodily
injury and/or property damage.
Please pass these instructions on to the operator of this equipment.
Installation and
Operating Instructions
for Davey HS20-65Y2
Multistage Pump
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
ofce as listed on the back of this document.
Congratulations on your purchase of a high quality, Davey pump. All components have been designed and
manufactured to give trouble free, reliable operation.
Model HS20-65Y2
1. Priming Plug
2. Removable Check Valve
3. Suction Inlet (11/4”NPSF)
4. Pump Body
5. Motor
6. Discharge Outlet (1” BSPF)*
* 1” BSPF will accept 1” NPT male ttings.
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 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
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.
Do not use this pump to pump ammable uids, such as gasoline or
diesel fuels.
Abrasive Materials
The pumping of abrasive materials will cause damage to the pump which will
then not be covered by the guarantee.
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 Davey pump is designed to handle clean
water. The pump should not be used for any other purpose without specic referral to Davey. The use of the
pump to pump ammable, corrosive and other materials of a hazardous nature is specically excluded.
NOTE: Your Davey Multistage Pump is designed to operate as a manual pump or as a pump for
an irrigation system started by a pump start relay.
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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.
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Electrical Connection
HS20-65Y2 models are 230 volt 60Hz only.
They should be connected as per the wiring
diagram (Right). The colour codes are: Green
= Ground/Earth, Black = Hot, Active or L1,
White = Neutral or L2.
To t the power lead to the HS20-65Y2, follow the
instructions below :-
1. Remove terminal cover from end of motor.
2. Feed power lead through hole in end shield
(see A on illustration). Fit grommet (B) to
lead.
3. Fit wires to the terminal block (C) as shown
in wiring diagram above.
4. Attach earth lead (green/yellow) at the earth
screw (D).
5. Put grommets from power lead in slots in
end shield as illustrated.
6. Put power lead into tortuous path on end
shield (E).
7. Tidy up power and capacitor leads, and
other wiring, to avoid pinching when the
terminal cover is replaced.
8. Replace terminal cover.
Connect power cord to power supply designated on pump label. Do not
use long extension cords as they cause substantial voltage drop, poor
pump performance and may cause motor overload.
Power connections and wiring must be carried out by an
authorized electrician.
Never run pump dry.
This pump is not to be used by children or inrm persons and
must not be used as a toy by children.
All wiring must conform to National (NEC), CSA, state, provincial, and local codes. Power supply
voltage, phase and controls must match motor.
Always disconnect and lockout all electrical power when installing or working on pumps,
motors or switches. Ensure the power supply breaker is off or the disconnect (where used)
is off.
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