Vetus BTANK25C Instructions D'installation Et Mode D'emploi page 10

3 Use
Emptying
The longer polluted water has been in the tank the greater the risk of
nuisance from smell. Therefore, never leave a waste water tank filled
unnecessarily long, but pump the tank empty or have it pumped
empty once a week, or whenever possible.
Pumping empty can be done in two ways:
1. by connecting a shore pump-out system to the deck cap to pump
the tank empty.
2. by using a pump present on the ship to pump out the waste water
directly overboard through the deck cap and a hose connected
to this. This pump must have internal diameter of minimum ø 38
mm (1 1/2").
Pumping waste water directly overboard is
in many places absolutely not allowed!
If the tank is pumped empty by a high capacity pump there is a risk
of the tank collapsing due to the reduced pressure caused. This prob-
lem occurs particularly when using the pump-out systems. The fol-
lowing measures can be taken to prevent collapsing from occurring:
- open the inspection cover on the tank
- open a shut-off valve fitted to the tank for this purpose
- install an automatically working blow valve.
During your absence
The water in the siphons can evaporate when no use is made of
washbasins, showers etc. for a long time (siphons act as smell traps
in the pipes). This causes smell nuisance. Therefore, place plugs in all
drains when the ship is not to be manned for a longer period.
Disinfect the tank and pipes at least once a year preferably at the end
of the sailing season.
Cleaning
'Grey water' tank
Clean the inside of the tank with water and a good degreasing house-
hold cleaner; use a brush or a sponge for a rigid tank. Rinse the tank
with clean tap water.
'Black water' tank
Clean the inside of the tank with water and a good toilet cleaner; add
cleaning vinegar if there are lime deposits; use a brush or a sponge
for a rigid tank. Rinse the tank with clean tap water.
If required, add to reduce odors 'Tank Fresh' .
Disinfecting
Disinfect the tank by filling it with a solution of bleach in water (1:
1000). Circulate this disinfecting mixture through the waste water
system. Remove the solution and rinse the tank with clean tap water.
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4 Making ready for winter
The tank, pipes, pump, etc. must always be drained completely.
Never put anti-freeze in the tank or other parts of the drinking wa-
ter system to protect it against freezing, anti-freeze is very poison-
ous!
5 Maintenance
- Check the breather nipple regularly and clean the sieve of the
breather nipple if necessary.
- Check the hoses and hose connections for possible leaks annually
and fit new hoses and/or hose clamps as necessary.
- Also check the tank for damage as a result of chafing. Replace a
damaged tank immediately.
- Carry out the disinfection procedures described under 'Use' at the
beginning of the sailing season.
- A tank and installation that is strongly contaminated by algae can
be cleaned by rinsing the tank, the pump and pipes with a solu-
tion of bleach in water (1:20). Rinse the tank with clean tap water.
6 Technical details
Type : BTANK25C
Capacity* : 25 litres, 5.5 Imp. gal., 6.6 US gal.
Weight* : 4.0 kgs, 8.8 lbs
Wall thickness : 7 mm ± 1.5 mm (9/32" ± 1/16")
mMPE (Metallocene Medium Density
Material :
Polyethylene), color: grey
Max. Pressure : 30 kPa (0.3 bar, 4 psi)
*) Nominal values are given for capacity and weight. Slight devia-
tions are possible.
Fittings supplied :
for extraction hose (with extraction pipe)
for ventilation
for drainage
N
ote
: ø 38 mm (1 1/2")
: ø 19 mm (3/4")
: ø 38 mm (1 1/2")
Riged waste water tanks 25 l