Fuel System - Westerbeke 7.6 KW BTD 60Hz Operator's Manual

FUEL SYSTEM
Diesel Fuel
Use No.2 diesel fuel with a cetane rating of 45 or higher. Never use kerosene or home heating oil since
these fuels do not have the same lubricating properties as No.2 diesel fuel.
In cold weather particularly, water vapor is produced by condensation when air is present in the fuel tank.
Keep fuel tank(s) full and completely free of dirt and water.
Fuel FilterlWater 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 filter/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 at the
right. This is the Raycor Model 220 F. Keep in mind that
if a water separator type filter is not installed between the
fuel supply tank and engine-mounted fuel system, any
water in the fuel will affect 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 (Self-Bleeding)
The Westerbeke self-bleeding fuel system is semiautomatic in operation. The self-bleeding feature of the
fuel system allows for easy servicing of the fuel filters. Simply remove and replace the filter element (take
care in catching any fuel that may drain out of the fuel filtering assembly as described in the "Replacing
the Fuel Filter Element" section. Energize the PREHEAT switch to allow the electric fuel pump to
operate for 20 to 30 seconds to prime and bleed air from the system. (No fittings should be opened.)
Then proceed to start the engine as you normally would. If the engine does not start, stop and wait a few
moments, and then repeat the bleed procedure as indicated below. When the PREHEAT switch is
depressed, the preheat elements (the glow plugs) are energized, so take care not to overheat them.
35 WESTERBEKE GENERATORS