Pipe connections, Extra draw-off capacity – Davey Speedman Compact Constant Water Pressure Systems User Manual
Page 5
5
In accordance with AS 3350.2.41 we are obliged to inform you that this
appliance is not intended for use by young children or infirm persons unless
they have been adequately supervised by a responsible person to ensure
that they can use the appliance safely.
Young children should be supervised to ensure that they do not play with
the appliance.
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 flow when pumping longer
distances.
Do not use pipe thread sealing compounds on any part of this
pump. ONLY use Teflon sealing tape.
NOTE: For protection, the Davey Speedman Compact controller is
equipped with an automatic reset current sensing overload, constant
tripping of this overload indicates a problem e.g. low voltage at pump,
excessive temperature (above 50°C) in pump enclosure.
Use unions at pipe connections to enable easy
removal and servicing. Use sufficient 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 filter 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 efficiency.
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.
Extra Draw-off Capacity
The Speedman Compact has an in-built accumulator which will accommodate small
leaks. In some applications it may be appropriate to install additional accumulator
(Supercell pressure tank) capacity. These applications includes:
• Long suction lines (see Suction Lines / Lift)
• Low flow appliances connected to the pump, such as evaporative air
conditioners, slow filling toilet cisterns.
Any additional accumulators can be installed downstream of the controller (ie.
between the controller and the first outlet).
Where extra draw-off capacity is utilised
the additional pressure tank should have
a pre-charge 15kPa below the system
pressure setting.
DO NOT USE THREAD
SEALING COMPOUNDS,
HEMP OR PIPE DOPE!