6
Use unions at pipe connections to
enable easy removal and servicing.
Use sufcient 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 efciency.
NOTE: Suction leaks are the largest cause of poor pump performance and
are difcult to detect. Ensure all connections are completely sealed using
thread tape only.
Flexible pipe should be considered to allow for movement between
building, pump and/or water supply. Braided hose, reinforced hose or
polythene pipe are suitable.
Do not use pipe thread sealing compounds on any part of this pump. ONLY
use Teon sealing tape.
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.
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 115°F) in
pump enclosure.
Extra Draw-off Capacity
The Torrium2 controller 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 ow appliances connected to the pump, such as evaporative air
conditioners, slow lling toilet cisterns, etc.
Any additional accumulators can be installed downstream of the controller (ie.
between the controller and the rst outlet).
Where extra draw-off capacity is utilised the additional pressure tank should have a
pre-charge of 70% of the maximum system (shut-off) pressure, see table below.
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