Start-Up and Operation, Leaky Systems | Franklin 5870206300 instruction

Start-Up and Operation

Apply power to the controller. A steady green light indicates that the SubDrive300 has power but the pump is not running. The green light will ﬂash continuously when the pump is running.

Leaky Systems

Leaky water systems might keep the controller running due to the accurate pressure sensing capability of the pressure sensor. Continuous running

or starts and stops do not hurt the controller, pump or motor. However, to reduce the on-time of the controller/pump/motor, a “Bump-Mode” procedure is installed. During low ﬂow (or leaky) conditions this feature periodically increases the speed of the pump several PSI above the set point and shuts off the pump. This adds some time to bleed off before the system starts up again.

NOTE: Conventional private water systems intermittently ﬁll a pressure tank as commanded by a standard pressure switch (e.g. 30 - 50 psi). The SubDrive300 maintains a constant pressure at the pressure sensor up to the maximum capability of the motor and pump.

Although the pressure is constant at the pressure sensor, pressure drops may be noticeable in other areas of the home when additional taps are opened. This is due to restrictions in the plumbing and will be more pronounced the farther the taps are from the pressure sensor. This would be true of any system, and if observed, should not be interpreted as a failure in the performance of the SubDrive300.