Installation; Maintenance - Vetus 320VTNEB Bedienungshandbuch

General
Vetus fuel filters/water separators 320VTNEB
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.

Installation

Note:
Bear in mind the regulations that your local
authorities have imposed regarding the
specification and installation of fuel tanks
and pipework.
Layout
Interpose the fuel filter/water separator in the
fuel supply pipe, between the fuel tank and the
fuel feed pump.
To avoid the fuel tank emptying out should
a leak arise somewhere in the fuel line to the
engine, a cutoff should be fitted near the tank's
suction connection.
4
040307.01
The following connection components are
supplied with the fuel filter/water separator:
Two tank hose bosses — M16 x 1.5 — with
connections for 10mm hose and 3 M16 x 1.5
blind plugs.
All fine filters installed before or after the fuel
feed pump must remain in position.
Mount the filter housing against a vertical
bulkhead.
Ensure there is sufficient space below the filter
to allow separated water to be drained off; to
render visible any contamination in the collec-
tion basin; and to allow the filter element to
be replaced.
Pay attention to the flow direction. This is
clearly marked.
Bleed the fuel system, if it is not an automati-
cally de-aerating one. See 'Bleeding' . Check the
fuel system for leakages.

Maintenance

Draining water from the water separator:
Drain monthly the water collected in the water
separator. If a large amount of water is seen to
collect in the transparent collection basin, you
will have to drain it off more frequently. See
illustration 3.
Replacing the filter element:
Replace the filter element at least once a year
or every 200 engine hours, whichever occurs
the sooner.
Fuel Filters/Water Separators