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How does a Conventional Water Well System Work?
- Conventional pumps run at only one speed…3,450 revolutions per minute.
- A pressure switch is used to interrupt or connect power to the pump depending on the pressure in the system.
- When the system pressure gets down to a “cut-in” pressure (typically 40 psi), the pressure switch connects power to the system.
- When the system pressure gets up to the “cut-out” pressure (typically 60 psi), the pressure switch disconnects power to the system.
- If the pump is a “3-wire” design, a control box containing electronic starting components is part of the system. Otherwise, the starting electronic components are in the pump (“2-Wire” design)
- A pressure tank is required in this type of system to provide a minimum pump run-time of one minute after starting. This means the tank drawn-down capacity must be at least as large as the number of gallons the pump can produce when running for one minute. For example, a system equipped with a 25 gallon-per-minute pump requires a pressure tank draw-down capacity of at least 25 gallons.
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