Vetus ILTCONW Instructions D'installation Et Mode D'emploi page 14

2 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 pump­out 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 over­
board through the deck cap and a hose
connected to this. This pump must have in­
ternal diameter of minimum ø 38 mm (1½
inch).
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 problem
occurs particularly when using the pump­out
systems. The following measures can be taken
to prevent collapsing from occurring:
­ open the inspection cover on the tank
­ open a shut­off valve fitted to the tank for
this purpose
­ install an automatically working blow valve.
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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 household 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 dis­
infecting mixture through the waste water sys­
tem. Remove the solution and rinse the tank
with clean tap water.
vetus® Connection kit for waste water tanks