6.1 FRESH WATER SYSTEM

The system consists of:

• Fresh water tank;
• Shore connection (1);
• Freshwater inlet nozzle (2);
• Autoclave pump (3);
• Watermaker (4);
• Water heater;
• UV sterilizer (optional);
• Water distribution manifold.

The fresh water system includes two tanks with a total capacity of 840l located under the dunnages of the corridor leading to the guest cabins.
The following connections are installed:

• Water inlet
  The inlet is located on the starboard walkaround inside a peak.
• Fresh water suction
  It supplies water to the autoclave pumps which pressurise the entire cold/hot water circuit. The autoclave pump, in order to work, must be powered via the magneto thermal breaker located on the main electrical panel.
• Tank water level transducer
  It checks the fresh water level in the tank. The water level in the tank may be monitored through the control panel.

The system can also be supplied from shore.
The various utilities can thus be served without the aid of the on board autoclave thanks to the pressure of the quay-side water system.

The fresh water system is equipped with an autoclave pump with electronic pressure regulator, which requires:

• Less use of the batteries, as the pumps activates only with high delivery requests;
• The pumps continuous operation, eliminating the connection and disconnection phases;
• The device stopping the pumps in case of water lack is installed on both pumps;
• The pumps start after reaching the minimum pressure value set.

The panel with warning lights displays the various operation stages:

• Power ON (green light - voltage);
• On (yellow light - pump runs for some seconds and brings the system under pressure 2.8/3 bar).

At utility connection the system starts the pump automatically, this latter stops when the utility disconnects, after resetting the system under pressure.
When faults occur, such as water leak of pipe clogging, the electronic regulator indicates the faults by means of “Failure” red light and stops the pump.
The system restarts either by pressing the red Restart button, or by handling on the magneto-thermal switch on main electrical panel (by cutting out/in the pump voltage supply).

CAUTION

Before refilling the fresh water tank, check that the water supplied by the shore fresh water system is drinkable.

CAUTION

The fresh water circuit, and particularly the tanks, must be sanitized periodically by pouring in the case a specific disinfectant solution. We recommend in any case that the water coming from the on-board system not be drunk.

CAUTION

On yacht equipped with direct connection to shore fresh water, the maximum operation pressure should not exceed 2.8 bar and the pipes must be disconnected for safety reasons, if the yacht is left unattended.
Notwithstanding the presence of a pressure limiter, check pressure on the pressure gauge installed on the regulator.

CAUTION

Regularly inspect the fresh water and bilge circuits for leaks. Repair any leaks by releasing the pressure in the system, in order to avoid damaging the furniture and the electrical equipment.

CAUTION

The pressure regulator at pumps output is set at the factory; do not modify.

CAUTION

The inlet plug is marked “WATER” to avoid accidental introduction of different liquids. To avoid damage to the system and tanks, we recommend replenishing by gravity and not by pressure.

WARNING

It is a good norm to optimise the use of water, especially if navigating at open sea!

Fresh water system diagram