Davey HS Series Electric Pumps - Manual (Page 2)

IP55 Compliant Connection
For some installations, such as wet areas in dairies, the pump is required to be
IPX5 compliant. The Dynaflo
® HS pump is IP55 compliant.
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 flow when pumping longer
distances.
Use unions at pipe connections to enable easy
removal and servicing. Use sufficient 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 efficiency.
Connection to your Water Source
ABOVE GROUND WATER SOURCES
Installations with flooded suction require a gate valve so water supply can be
turned off for pump removal and servicing.
Leave the in-built one-way check
valve installed to avoid water draining
back past the pump while not in
operation and causing possible pump
damage.
Connection to your Water Source
BELOW GROUND WATER SOURCES
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 office as listed on the back of this document.
Choosing a Site
Choose a site with a firm 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 firm base
allowing for drainage, to avoid damage to
flooring etc., that over time may occur from
leaking pipe joints or pump seals.
Do not mount the pump vertically.
Power Connection
In accordance with AS/NZS 60335.2.41 we are obliged to inform you that this
pump is not to be used by children or infirm persons and must not be used as a
toy by children.
Whenever the installation position of the pump is higher than the lowest water
level, a foot valve fitted 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.
SPEAR POINT INSTALLATIONS
When a Dynaflo
® HS is installed on a spear or well point, the in-built check
valve MUST be removed and a check valve fitted immediately on top of the
spear point itself, as shown in (B) above.
Removal of in-built check valve
If your installation requires the removal of the in-built check valve or the in-
built check valve requires removal for servicing, this can be achieved without
difficulty.
The in-built check valve is a cassette design, which is screwed in through the
suction inlet.
Removal of the check valve cassette is achieved by inserting any suitable tool
(eg: a pair of pliers or the handle from an adjusting spanner) into the inlet.
The check valve cassette has various ribs and recesses to allow a variety of
nonspecific tools to be used in the removal or insertion process.
Spear Size Mesh Approx. Max. Capacity of Spear Point
1 1 /
4
” (32mm) 60 15 - 23 l/min or 200 - 300 gal/hr
1 1 /
2
” (38mm) 60 23 - 38 l/min or 300 - 500 gal/hr
2” (50mm) 60 38 - 75 l/min or 500 - 1000 gal/hr
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 Dynaflo ® HS Electric Pump is designed to handle clean water. The pump
should not be used for any other purpose without specific referral to Davey.
The use of the pump to pump flammable, corrosive and other materials of a
hazardous nature is specifically excluded.
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.
The electrical connections and checks must be made by a
qualified electrician and comply with applicable local standards.
DO NOT USE THREAD SEALING COMPOUNDS, HEMP OR PIPE
DOPE!
NOTE: Suction leaks are the largest
cause of poor pump performance
and are difficult to detect. Ensure
all connections are completely
sealed using thread tape only.
DO NOT USE SEALING COM-
POUNDS OR PIPE DOPE.
NOTE: DO NOT install the check valve at the pump or at the top of
the well. DO NOT run the pump without water.
NOTE: Be certain to select the spear point to suit the well conditions
and regulate the flow rate from the pump accordingly.
NOTE: Prior to installation remove the red transport plugs & associated seals from
the suction and/or discharge ports.
NOTE: HS models are fitted with an in-built suction check valve
which should be removed on all suction lift applications and a
foot valve or check valve installed in the suction pipework as
appropriate.