ALT-DMD-LA Control Panel

The ALT-DMD-LA is designed to operate a duplex lift station with alarm.
This control can be used for pump up or pump down operation. The pump
operation is controlled on demand by a three float set up. The three floats
are primary pump On/Off, Alarm, and secondary pump On/Off float. This
control is a duplex pump operation and will alternate pump load between
both pumps. The control will switch pumps at the end of every pump cycle
so the opposing pump will start on the next cycle. The alternating relay is
switchable to lock the pump load onto either pump so if one pump needs
to be removed for service or replacement the other pump will carry the full
pump load.
This control panel will operate two 120VAC single phase 1⁄2 HP pump or
smaller. There are three circuit breakers in this control. Each pump will
have a 20 Amp single pole circuit breaker and the alarm uses a 10 Amp
single pole circuit breaker. The alarm is designed to be used with a float
switch. When the float switch closes, the 360 degree top mounted red
alarm light will come on and the Pizo electric buzzer will sound. This
control also has a latching alarm feature. This means when the Alarm float
closes the alarm will stay on even if the tank returns to normal level. This
alarm must be manually reset by turning the Alarm circuit breaker off, then
back on. There is an alarm test and buzzer silence switch mounted in the
door of the enclosure. This control is mainly used to pump sewage from a
septic holding tank to a treatment unit using a solids handling pump, or
pumping treated effluent water from a septic holding tank to the dispersal
The enclosure has a NEMA rating of 4X which provides protection from
falling dirt, falling liquids, hose directed water and corrosive agents. The
12”x10”x6” enclosure is made of Polycarbonate and has a hinged lockable
door with latches and included screws to secure the door if required. All
electrical components are mounted inside the enclosure on an aluminum
back plate.


  • 12”x10”x6” Polycarbonate Enclosure, NEMA 4X
  • Hinged lockable door with two latches.
  • Three circuit breakers for the protection of components.
  • Repeat cycle timer for time dosing effluent applications.
  • Pump test switch inside the enclosure to check pump operation.
  • Alarm light and Pizo electrical buzzer.
  • Alarm test and buzzer silence switch.
  • Captive terminal strip for field wiring.