Water Pump (Bilge) - norlab-ulaval/Norlab_wiki GitHub Wiki
The 24 V bilge pumps situated in the bottom part of each rocker are comprised of two main parts the water sensor and the main pump. The pump is self managed, per Clearpath the water sensors activates every two minutes to detect water if water is detected the water sensor will close a relay which will connect the main pump to 24v and start to evacuate water until the water level is bellow the accepted threshold. See bellow the full schematic of the pump diagram.
See in the sevcon section the relay controled by the water level sensor