Westerbeke BTDA 15.0 Operator's Manual & Installation Manual page 43

Fuel Fllter/Water Separators
A primary fuel filter of the water separating type
must
be installed between the fuel tank and the engine.
This is to remove water and other contaminants from
the fuel before they can be carried to the fuel system
on the engine.
Most installers include with the generator installation
package a type of fitter/water separator for they are
aware of the problems contaminants in the fuel can
cause - all of which are not warrantable through
Westerbeke.
A typical fuel filter/water separator is illustrated in
figure 5.3. This is the Raycor Model 500MA. Keep
in mind that
~
a water separator type filter is not
installed between the fuel supply tank and engine-
,
.
,
,
/ I N
mounted fuel system, any water in the fuel will affect figure 5.3: Fuel Filter/Water Separator
the fuel pump, engine filter, and injection equipment.
The owner/operator is responsible for making certain the fuel reaching the engine's injection
equipment is free of impurities. This process is accomplished by installing and maintaining a
proper filtration/separation system.
In addition, any gasoline in the fuel system will damage the engine's fuel injection pump
assembly and injectors as gasoline does not have the same lubricating qualities as diesel fuel.
Priming the Fuel System (One Bleed Point)
The on engine fuel system is nearly se" bleeding. (See figure 5.8). There is one bleed point
in the on engine fuel system to open for the removal of air. This bleed screw is located on
the housing for the spin on fuel fitter mounted on the engine. This bleed point is an 11 mm
hex/slotted head screw that should be opened 1-2 turns to remove air from the upper housing
area of the fuel filter. Energizing the preheat switch for 10-20 seconds or by using the palm
of one's hand to slowly depress and release the primer pump on the top of the filter housing
will force air in this area out through this bleed point. Once all air is expelled tighten the bleed
screw.
NOTE: Do not over tighten this screw. When using the preheat function
to bleed air from the fitter assembly, keep in mind that the preheat
elements (glow plugs) are being energized. Take care not to overheat
them.
Once the fuel filter assembly is bled of air and the bleed screw tightened again, depress the
preheat switch 10-20 seconds or slowly pump the primer on the fuel filter housing to force any
air in the system between the filter housing and the injection pump out of the system and
back to the fuel tank through the return.
15.0KWBTDA
41
Westerbeke Generators