Westerbeke 7.6 KW BTD 60Hz Operator's Manual page 24

FUEL SYSTEM
The generator must have its own fuel supply line; in other words, it must have its own pickup tubes and
primary filter/water separator. DO NOT TEE OFF OF ANOTHER ENGINE'S FUEL SUPPLY. The
fuel system should be installed in such a manner as to allow the engine-mounted fuel lift pump to
maintain a positive iulet pressure to the injection pump under all operating conditions. The minimum
size of the fuel supply line and fuel return line is 114 inch, inside diameter, and there should be a primary
fuel filter installed between the fuel tank and the fuel lift pump. Only one fuel filter is installed on the
engine, between the fuel tank and the fuel lift pump. Only one filter is installed on the engine, between
the fuel lift pump and the injection pump; this filter has a replaceable element.
The fuel tank's fuel pick up tube should be clear and unobstructed. No screens or gauze strainers should
be incorporated in the fuel pickup tube. Make sure the fuel supply and return lines are secureley anchored
to prevent chafing and that all fittings are sufficiently tightened to prevent leakage. Also, make sure your
fuel system has a positive shut
-off
valve; kuow its location and how it operates. Do not use a mechanical
check valve for this function.
It is recommended that an approved filter/separator be used in the fuel supply between the fuel tank and
the generator's engine to help remove contaminants in the fuel before the fuel reaches the engine-mounted
fuel lift pump and injection pump.
The fuel return at the tank should extend down into the tank in the same manner as a pickup tube. This
practice is particularly important in installations where fuel tanks are installed below the engine's fuel
system and will help prevent air from entering the fuel system when the engine is shut down. Ensure that
the fuel tank filler is properly sealed to prevent water entry should it become awash. The fuel tank's vent
should be located so that its discharge route cannot allow water to enter through to the fuel tank(s).
Moisture must no be allowed to accumulate in the vent's line.
Be sure that there is a fire e>.1inguisher installed near the unit and that is properly maintained. Be
familiar with its use. An extinguisher with the NFP A rating of ABC is appropriate for all applications in
this environment.
OIL DRAIN
An oil sump drain hose is installed on the engine with the discharge and secured by a bracket at the front
of the engine. Oil may be drained from this hose by removing the cap and the discharge end of the hose
from the support bracket and lowering the hose into a container. The hose cap fitting is 114 inch NPT and
can be extended, or have a pump added, for easier removal of the old oil, if desired.
CONNECTING PRESSURE SENSING DEVICES TO OIL GALLERIES
Oil pressure sensing devices, such as senders and switches, must no be connected to an engine's oil gallery
with the use of extended nipples or tees. The reason is simply that continued engine vibration causes
fatigue of the fittings used to make such a connection. If these fittings fail during engine operation,
lubricating oil will be lost and internal engine damage will result.
When additional sensing devices such as senders and switches need to be installed, these devices must be
bulkhead-mounted and connected to the oil gallery using an appropriate grade of lubricating oil hose.
Any fittings used to connect the hose to the oil gallery must be of steel or malleable iron composition.
Brass must not be used for this application.
WESTERBEKE GENERATORS 20