CAUTIONThe alarm is triggered with the high contact of the main grey water tank, but the fresh water pump is not disabled.
Grey drainage waters are collected inside the structural tank located at the center of the yacht, which has a capacity of 120 liters (32 gal).
The tank collects the discharge water from basins, showers and the condense water of the air conditioning system fan-coil.
The tank, not being airtight, does not need any air vent.
From the tank, through a pipe that reaches the grey water pump located in the engine room, the water is discharged into the sea through a centralized drain located in the engine room.
The pump supply magneto-thermal switch is located on the 24V main switchboard, together with a light indicating its operation.
The pump is automatically controlled by an electronic level switch installed inside the tank. The grey water pump starts when the sensor detects a high water level and deactivates once the water level has lowered.
Furthermore, to facilitate the collection of grey water inside the tank, there are two collection boxes with a dedicated pump.
The grey water pump has two operating modes, automatic and manual, which can be selected via a control on the main switchboard.
In “AUTOMATIC” mode, reaching the medium level enables the pump, which remains active until the low level is reached.
If the pump is active, switching the auto/manual selector stops the pump.
In “MANUAL” mode, press the “MAN” button to start the pump.
The pump remains active until the low level is reached.
If the level is lower than the low level, the pump will not start, not even pressing the “MAN” button.
The tank level should always be checked using the warning lights on the main electrical panel or, in any case, it should be emptied under manual control before entering port to avoid having to sail out to the sea again to empty it.
CAUTIONThe alarm is triggered with the high contact of the main grey water tank, but the fresh water pump is not disabled.
ENVIRONMENTDo not discharge soapy waters drained by washing machines and dishwashers in the harbour, inside marinas or near beaches, because of the large amount of foam produced.
To allow a regular flow and to avoid the formation of bad smell and gas, the tank is equipped with anti-odour siphons.
WARNINGDo not pour any corrosive product into the washbasins or showers or products at high temperatures, as they could cause damage to the grey water system.
CAUTIONTotally empty the system and the grey water tank before the lay-up period in order to prevent any problems with freezing.
At least once every three months:
CAUTIONDo not activate the grey water pump manually if the level for the automatic stop is the lowest, to keep the pump primed.
Grey water system diagram:
