Vetus 330VTEB Manuel D'utilisation Et Instructions D'installation page 6

General
Vetus fuel filters/water separators (75) 330VTE
(P) B, (75) 340VTE (P) B and (75) 350VTE (P) B
have a unique and patented filter with three
filtration steps.
1) Firstly, 80% of the solid dirt particles and the
water, which is heavier than fuel, are col-
lected in the transparent collection basin.
2) After this, the fuel flows upwards. Water and
solid dirt particles are separated by means
of the coalescence effect (to coalesce is for
microscopically small fluid droplets to stick
together as a larger drop) and also collected
in the transparent collection basin.
3) Finally, the fuel flows further upwards
through the filter mechanism, the prima-
ry function of which is to hold back the
smallest solid dirt particles and water: this
ensures a high degree of filtration and a
long lifetime for the fine filter on the engine.
For propulsion engines, the double filter —
ready-equipped with the necessary fitting
materials — is recommended as a safety pro-
vision. This enables a rapid switch-over in the
case of a suddenly-blocked filter — a situation
that can occur without warning and which is a
serious risk during sailing.
These filters are suitable for diesel fuel only.
6
040305.02
Installation
Note:
Bear in mind the regulations that your local
authorities have imposed regarding the
specification and installation of fuel tanks
and pipework.
Where a double filter is fitted, the filter is
under pressure (with a pressurised non-
inflammable gas).
Prior to fitting the filter, remove the caps on
the connections to the fuel supply line and
open the valves to depressurise the filter.
If the valves are opened (with a full fuel
tank) once the filter has already been fitted,
fuel will no longer be drawn into the filter!
Layout
For vessels under construction:
(See illustrations A1 and A2)
Mount the suction pipe at the bottom of the
tank; the bottom of the tank is thus kept clean
at all times and the build-up of water and bac-
teria is prevented.
The fuel return line must be led into the top of
the tank, and must feed down to the bottom of
the tank on the opposite side from the suction
pipe. This prevents foam forming in the fuel
tank: the constant flow of fuel ensures that the
build-up of dirt, and thus cleaning expenses for
the tanks, are not incurred.
Warning
Fuel Filters/Water Separators