Westerbeke 7.0 BCG - Safety Shutdown Switcbes

SAFETY SHUTDOWN SWITCHES
. SAFm SHUroOWN SWITCHES
The engine is protected by a variety of shutdown switches.
Should a shutdown
occur, do not attempt to restart without
finding
and correcting the cause. Refer to the heading
Engine starts, runs and then shuts dbwn in the ENGINE
TROUBLESHOOTING section of this manual. .
The following is a desCription of these automatic shutdown
switches:
EXHAUST
TEMPERATURE
SWITCH
Exhaust Temperature Switch
An exhaust temperature switch is located on the exh;~ust
elbow. This switch will open and interrupt the DC voltage tn
the ignition coil (which turns OFF the engine), should the
switch's sensor indicate an excessive exhaust temperature (an
inadequate supply.of raw water coolant causes high exhaust
temperatures).
This switch opens at 260" - 270° F
(
127° - 132" C) and resets at approximately 22."i'F (107'' C)
High Water Temperature Switch
A high water temperature switch is located on the thcm10st.at
housing. This switch will open and inte1rupt the DC voltage
to the ignition coil (which turns OFF the engine). should the
fresh water coolant's operating temperature reach
approximately 205" F (96" C). ·
This switch resets at 195" F (!OTC).
low Oil Pressure Switch
A low oil pressure shutdown switch is located off the
engine's oil gallery. The switch is kept closed by engine oil
pressure. Should the engine's oil pressure fall to 10 - .15 psi,
t11e switch will open interrupting the DC voltage to the
ignition
coil (which turns OFF the engine).
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Oil FILTER. ~Ji
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LOW OIL PRESSURE SWITCH
High RPM Shutdown Switch
An overspeed shutdown switch shuts OFF the generator set
by grounding out the ignition system should the engine's
speed reach approximately 2175 rpm. Reset the switch b)
momentarily depressing the STOP switch. (Make sure the
cause
of the engine overspeed shutdown is cnrre.cted).
Engine Circuit Breaker
The. generator's engine is protected by an engine mounted
manual reset circuit breaker (20 amps DC). Excessive current
draw or electrical overload anywhere in the instrument panel
wiring or engine wiring will cause
the breaker to trip. In this
event
the generator will shut down because the opened
breaker interrupts the DC circuit
to the K2-run relay. If this
should occur, check and repair the source of the problem.
After repairing the fault, reset the breaker and restart
the
generator.
l"flV'iWESTERBEKE
~ Engines'&' Generators
11