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Pipe connections, Extra draw-off capacity – Davey Speedman Compact Constant Water Pressure Systems User Manual

Page 5

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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!