3pressure tank – Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE User Manual
Page 8
Operating Instruction
8
3
Pressure tank
A diaphragm pressure tank is used on the discharge side of the pump or pumps to maintain
pressure in the line when there is no demand. This will keep the pumps from continuing to
run. With the Technovar control unit, it is not necessary to have a large tank for supply
purposes.
In selecting a tank, make sure it is permit and suitable for systems pressure. The tank should
have a capacity of more than 10% of the maximum system flow rate g/min of one pump (also
in a multiple pump system!).
Pre charge the tank to the following:
Required pressure
Note: De-pressurize the tank prior to charging to ensure accuracy of the
pre-charged pressure.
Pre charge pressure (psi)
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