Home > Technical Data > Datasheets and Installation Guide > Level Control Drainage System of Underground Tank
Level Control Drainage System of Underground Tank
Installation of two level switches and contactor for pump automation in drainage system (underground tank).
- 1 Empty tank: The level switches are opened and do not allow the contactor coil energization (A1/A2), keeping the pump turned off.
- 2 The tank level rises: The lower level switch closes the contacts but the contactor coil keeps not energized until the upper level switch be reached, then the contactor remains energized by the contacts 13/14, turning the pump on.
- 3 Filled up tank: When the upper level switch opens the contactor coil, it keeps energized by the contacts 13/14 and turning the pump on. When the level get the lower level switch it will open the contact, turning the pump off.