Pre-installation
Tanks – Conventional Storage (Air to Water Tank)
The function of the tank is to store a quantity of water under pressure. When full, the tank contains approximately 2/3 water
and 1/3 compressed air. The compressed air forces the water out of the tank when a faucet is opened. An air volume
control automatically replaces air lost or absorbed into the water. The usable water, or drawdown capacity, of the tank is
approximately 1/6 of the tanks total volume.
NoTe:
If you have a conventional tank using an air volume control, the tube to the air volume control must be connected to
the pump suction pipe.
Tanks – Pre-charged Storage
A pre-charged storage tank has a flexible bladder or diaphragm that acts as a barrier between the compressed air and the
water. This barrier prevents the air from being absorbed into the water and allows the water to be acted on by compressed
air at initially higher than atmospheric pressures (pre-charged). More usable water is provided than with a conventional type
tank. Pre-charged tanks are specified in terms of a conventional tank. For example, a 20 gallon prec-harged tank will provide
the same usable water or drawdown capacity as a 40 gallon conventional tank, but the tank is smaller in size.
Pressure Switch
The pressure switch provides for automatic operation. The pump starts when pressure drops to a cut-in setting. The pump
stops when pressure reaches a cut-out setting. The factory set pressure switch setting is 30 psi (cut-in) and 50 psi (cut-out).
Wells
A new well should be pumped clear of sand before installing the pump. Sand will damage the pumping parts and seal. The
drawdown level of the well should not exceed the maximum rated depth for the pump. The capacity of the pump will be
reduced and a loss of prime may occur.
Location
Select a location as close to the water supply as possible. Be sure to comply with any provincial/state or local codes
regarding the placement of the pump. The equipment must be protected from the elements. A basement, frost-proof pit or
heated pump house are good locations. Make sure the pump has proper ventilation.
Piping
Piping may be copper, rigid PVC plastic or flexible polyethylene plastic.
The pipe must be clean and free of rust or scale. Use a pipe joint compound on the male threads of the metal pipe. Teflon
tape should be used with plastic threads. All connections must be air tight to insure normal operation.
Slope all inlet piping upwards towards the pump to prevent trapping air. Unions or hose couplings can be installed near the
pump to facilitate removal for servicing or storage.
Pipe Sizes
Long horizontal pipe runs and an abundance of fittings and couplers decrease water pressure due to friction loss.
Friction losses in the suction pipe must be taken into consideration when the horizontal offset is greater than 50 feet. The
suction pipes should be increased from 1” to 1-1/4” and from 1-1/4” to 1-1/2”. This will reduce friction losses and allow the
pump to give maximum performance.
Never run the pump dry
. Damage to the seal may occur. fill pump body and suction pipe with before turning on the power.
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