Dufour 41 - Bilge Pump and Sanitation System; Specifications of the Bilge Pump System (Iso 15083:2003); Pressurised Fresh Water Pump; Seacocks

ENGLISH 11-07-2023 17/95 DUFOUR 41
V. BILGE PUMP AND SANITATION SYSTEM
Specifications of the bilge pump system (ISO 15083 :2003)
Pump type
Theoretical flow rate
Manual
38 L / 45 strokes per min.
Electric 12V
3900 L / h
Read the operating and maintenance instructions for your boat’s bilge pump carefully.
WARNING
The bilge pump system is not designed to control water entering the boat through breaches in
the hull.
It is designed to drain water from sea spray, a leaking valve or any other moderate leak.
CAUTION!
● The level of water in the bilge must be kept to a minimum
● Make sure that the bilge pumps are in perfect working order prior to setting out to sea.
● Clean the sump and pump suction strainers or points on a regular basis to clear them of any
debris which may obstruct them.
If there are watertight partitions separating the forward and aft valve points, these should be
closed under normal conditions and opened only in order to drain off water from the main
bilge.
● Make sure you know where to find each manual pump and its lever.
● Make sure you know where to find the switch for the electric bilge pumps on the electrical
panel.
Pressurised fresh water pump
Fresh water is supplied to the sink and washbasin by an electric pump. There is a filter fitted
upstream of the pump which must be cleaned on a regular basis.
Never run the pump if the tank is empty. Fill the tank before using the fresh water circuit
again.
Tanks can be sterilised with a disinfectant tablet (available at the pharmacy). Once a year, remove
the inspection ports to clean the tanks. Fill them with a solution of water and bactericidal
detergent, leave the product to act for a few hours then rinse 2 to 3 times. When wintering the
boat, fill the tanks right to the top to prevent the growth of algae or bacteria, or empty them if they
risk freezing. Never use anti-freeze.
Hot water is supplied by a water heater connected to the engine’s cooling circuit and the shore
supply socket.
After draining the water heater, make sure that its resistance is fully submerged before switching it
back on again.
Seacocks
Seacocks are of the ¼ turn type:
- OPEN position: the handle is in line with the seacock body,
- CLOSED position: the handle is perpendicular to the seacock body.