Franklin 5870206300 ユーザーズマニュアル

The SubDrive300 controller is confi gured 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 fl ow rates to make sure the default sensitivity 
does not induce nuisance Underload trips.

If it becomes necessary to desensitize the Underload trip level, remove 
power and allow the controller to discharge. Once the internal voltages have 
dissipated, locate the DIP switch marked “SW1” at the lower right corner 
of the main circuit board. Use a small screwdriver (provided) to change 
Position 3 to the “ON” position to select the lower Underload sensitivity as 
shown in the chart below.

▲

 WARNING

Serious or fatal electrical shock may result from contact with internal 
electrical components. DO NOT, under any circumstances, attempt 
to modify DIP switch settings until power has been removed and 5 
minutes have passed for internal voltages to discharge!

 3  OFF  Normal

(default)

 

ON 

Low (shallow wells)

O N