Install Instructions
6
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.
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.
Do not use pipe thread sealing compounds on any part of this pump. ONLY
use Teon sealing tape.
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.
Water Hammer
In applications where fast-acting valves are present, water hammer may be a concern.
The installation of a pressure vessel will assist in reducing water hammer. This will
reduce the likelihood of damage to infrastructure. Pressure tanks are sold separately.
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.