Underload Sensitivity; Advanced Configuration - Franklin Electric SUBDRIVE UTILITY UT2W 5870202003 Serie Manuel Du Propriétaire

UNDERLOAD SENSITIVITY

(if needed)
The Underload Sensitivity MUST be adjusted only when the SubDrive Utility is POWERED OFF. The new setting will not take effect until
the drive is powered up.
The SubDrive Utility controller is configured at the factory to ensure detection of Underload faults in a wide variety of pumping applications.
In rare cases (as with certain pumps in shallow wells), this trip level may result in nuisance faults. If the pump is installed in a shallow well, activate
the controller and observe system behavior. Once the controller begins to regulate pressure, check operation at several flow rates to make sure the
default sensitivity does not induce nuisance Underload trips.
If it becomes necessary to adjust the Underload trip level, remove power and wait 5 minutes for the controller to discharge. Once the internal
voltages have dissipated, locate the Underload Potentiometer on the upper-right corner of the User Interface Board, as shown in the figure.
Underload Sensitivity: Shallow Set
If the pump is installed in an extremely shallow (i.e. artesian) well and the system continues to trip, then the Underload Sensitivity knob will need
to be adjusted counterclockwise to a lower sensitivity setting. Check the Underload trip level and repeat as necessary.
Underload Sensitivity: Deep Set
In cases where the pump is set very deep, run the system at open discharge to pump the well down and observe carefully that an
Underload is detected properly. If the system does not trip as it should, then the Underload Sensitivity knob will need to be adjusted
clockwise to a higher sensitivity setting.

ADVANCED CONFIGURATION

Steady Flow Selection (DIP SW3 - Position 1)
The SubDrive Utility controller is configured at the factory to ensure quick response to maintain constant pressure. In rare cases
(as with a water line tap before the pressure tank), the controller may need to be adjusted to offer better control.
If the controller is used on a system that has a water line tapped before the pressure tank and close to the well head, or where audible speed
variations of the PMA can be heard through the pipes, adjusting the pressure control response time may be necessary. After enabling this feature,
the installer should check flow and pressure changes for possible overshoot. A larger pressure tank and/or wider margin between regulation and
pressure relief valve pressure may be required, as the Steady Flow feature reduces the controller's reaction time to sudden changes in flow.
If it is necessary to adjust the pressure control, remove power and allow the controller to discharge. Wait 5 minutes to allow internal voltage to
dissipate. Locate the DIP switch marked "SW1" and move SW3:1 to the ON (up) position.
Broken Pipe (DIP SW3 - Position 2)
The SubDrive controller has an optional broken pipe detection feature. If the system is pumping for 10 minutes without achieving the system
pressure setpoint, the controller will indicate a Broken Pipe fault. If a Broken Pipe fault occurs, the system must be power cycled to clear the fault.
To enable the Broken Pipe feature, SW3:2 must be in the BP (up) position.
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