Dc Electrical System - Westerbeke 9.0 BCG Technical Manual

DC ELECTRICAL SYSTEM
Safety Information
This circuit is designed and manufactured in compliance with United States Coast Guard Standards (33 CFR
PART 183). No modifications may be made to it by the installer or user. It is the installer's responsibility to
assure that the installation of the generator set and any remote start panels or remote instrument panels are
installed in compliance with the above Coast Guard Standards. Failure to observe these requirements could
be the cause of injury.
DC Circuit Description
The two-pole ON switch is operated to bypass the protective shutdown switches during starting. The second
pole provides a source of B
+
to the START toggle switch. While continuing to hold the ON switch, to provide
B
+
to the start switch and to bypass the protective shutdown switches, the START switch is pressed to ener-
gize the starter to crank the engine. If you are starting the generator at the generator set, release the START
switch when the generator is running. If starting the generator at a remote location, release the START switch
when the green LED lights, but continue depressing the ON switch. After releasing the START switch con-
tinue holding the ON switch until oil pressure is sufficient to close the oil pressure safety switch, providing
the normal B
+
path to the ignition system. Note that it is now impossible to energize the starter while the
generator is running until someone again operates the ON switch first. Should the generator shut down from
an overspeed condition, the overspeed circuit
must
be reset before attempting to restart the generator. Reset-
ting the overspeed circuit is done by simply depressing the STOP switch momentarily and then proceeding
with the normal starting procedure.
IWARNINGI
It is very important that the overspeed shutdown always be installed and functioning. Any
tampering with the overspeed shutdown module, which would cause it to malfunction, could
be a cause of injury should the generator's belt-clriven governor fail and cause the generator
engine to run ungoverned.
To STOP the generator, depress the STOP switch, which opens the normally closed B+ path on the ON
switch. The STOP switch must be held open until the generator comes to a complete stop. Remote start
panels may be connected to the generator set as indicated. A jumper has to be removed between the T1
and T2 connections at the panel connection terminal board in the generator mounted control panel.
IWARNINGI
When installing the optional remote start panel or the optional remote instrument panel, it is the installer'S
responsibility to comply with U.S. Coast Guard Standards 33 CFR PART 183.
169 Westerbeke Generators