Franklin 5870206300 installation manual How It Works, Constant Pressure

How It Works

The Franklin Electric SubDrive300 is designed to be part of a system that consists of only four components:

A.Standard Pump and Franklin Electric Motor.

B.SubDrive Controller.

C.Small Pressure Tank (for tank size, see Table 3).

D.Franklin Electric Pressure Sensor (provided).

E.Franklin Electric Pressure Shut-Off Sensor (provided).

B		Pressure
C	Pressure	Shut-off
	Sensor	Sensor
	Leads	Leads
	D	E
Pressure
Relief Valve
PUMP
MOTOR
Power Supply
From Circuit Breaker

Constant Pressure

The Franklin Electric SubDrive300 provides consistent pressure regulation using advanced electronics to drive a standard motor and pump according to the pressure demands indicated by a highly accurate, heavy-duty, long-life pressure sensor. By adjusting the motor/pump speed, the SubDrive300 can deliver constant pressure dependably, even as water demand changes. For example, a small demand on the system, such as a bathroom faucet, results in the motor/pump running at a relatively low speed. As greater demands are placed on the system, such as opening additional faucets or using appliances, the speed increases accordingly to maintain the desired system pressure.

6