Overspeed Shutdown - Westerbeke 4.5 BCG Operator's Manual

OPERATING .INSTRUCTIONS
ABNORMAL STOP
An abnormal stop is one in which the generator ceases to nm
and comes to
a stop as a result of an operating fault which
may cause damage to the engine, the generator, or create an
unsafe operating condition. The fault stop conditions are:
1. Overspeed condition!.
2. High engine temperature.
3. Low oilpressure.
4. High exhaust temperature.
Should a fault condition occur, the engine will shut down,
and the green LED
light on the remote panel will go off
indicating that a fault has occurred. Once detected, the fault
should be located
(see
ENGINE TROUBLESHOOTING).
OVERSPEED SHUTDOWN
In the
case
of an overspeed shutdown, the overspeed circuit
must be reset before re-starting the generator. Simply depress
the Stop switch mtarily then proceed with the normal start
sequence.
If the overspeed switch itself is faulty and re-setting it by
depressing the SIDP switch will not reset the circuit, lift the
T-1 coil connection from the overspeed switch and tape the
end of the T-1
wire
with electrical tape. By-pass this circuit
only
as
a
test
Re-start the generator, if this by-pass is
successful, replace the faulty oversi:ieed switch.
Do not run the generator with out replacing the
ov~peed
switch.
A
WARNING:
Do not operate the generator with ·
the overspeed sWitch by-p8S$ed.
Refer to the CONTROL PANEL WIRING DIAGRAM in this
manual.
NOTE:
Overspeed switches draw a small amount
of
amperage (25 milliamps) at all times once the generator is
connected to its starting battery. This amounts to approxi-
mately 18 ainp-hours
in
a month. It is not necessary to be
concerned with this slight amperage draw during normal
seasonal operation. However,
if
the generator set is to be
unused for many months, it is best to either remove the 8
amp ignition fuse from the control panel on the generator or
turn off the generator's starting battery switch.. ·
A
CAUTION:
It
is
very Important that the overspeed
shutdown always
be
installed and tunc,;oning. Any
tampering
with
the ov,,,S,eed shutdown madule. which
would cause it,to ma/function. could be a cause of
Injury shQuld the.gsnerator's belt-driven governor fail
and.~use
the generator to run away.
REMOTE
PANELS
The remote start-pqnel and the
remt>te
inStrumentpanel
operate the same
as the generator mounted
control
panel
except that they have green LED lights for starting at a,
remote location {where the soun(i
of
the
generator
may not
be audible). The green LED lights indica,te when the
generatods running at about
6QO
rpms. Tuai is when the stm
switch should be released. For the remote start/stop sequence
refer to STARTING THE GENERATOR on the previous
pag~.
l'W'IWESTERBEICE
) Engines & Generators
9