Variable Speed Technology
Constant Water Pressure
City Like Water Pressure From Your Water Well System

How They Work

The submersible well pump is controlled from a Sub -Drive panel which converts the incoming single phase power to three phase power to run the submersible pump. A pressure transducer located on the manifold line detects line pressure and speeds up or slows down the rpm's of the motor to pump the desired Gallons Per Minute at a set pressure.

Let's say that the system installed is a C.P 75 Sub- Drive 1-1/2 hp (20 gpm ) with a set pressure of 65 psi, as you open up the kitchen faucet which takes approximately 3 gpm the pressure transducer reads the pressure drop and sends the signal to the drive which then ramps up the pump to maybe 1800 rpms, because the demand is only 3 gpm the pump doesn't need to spin any faster to maintain the 65 psi set pressure, as you open up additional faucets creating more of a demand the rpms of the motor speed up to meet the demand and maintain the 65 psi set pressure. As the demand subsides the rpms slow down until the pump go's into sleep mode when no water is being used.

The advantages are the electric that runs the pump is more economical in that it's a 3 phase motor, no pressure fluctuations when water is being used at different locations in the house, the entire system is wall mounted with a small pressure tank which free's up floor space. C.P. systems come in a variety of models ranging from 20 gpm through 90 gpm.