Installation manual
STARTING/STOPPING
PROCEDURE
THE
STARTING
SYSTEM
Westerbeke diesel generators usc electric starters assisted
by
glow plugs for both normal and cold weather starting. The
illustration below shows a cross-sectional view
of
one
cylin-
der. The glow plug
is
located
in
the combustion
chamber
so
that its tip
is
in the injector nozzle's spray path.
When
the
glow plug
is
energized by the PREHEAT button, the plug
glows red
at
the tip and assists in igniting the fuel.
The
result
is
a rapid start with less wear on the starter.
This system
is
common
to
WESTERBEKE
diesels.
The
start
circuitry
is
designed so that the PREHEAT button must be
depressed for the time specified
in
the preheat chart. Then,
while keeping the
PREHEAT button engaged, the START
button
is
depressed
to
crank the engine.
NOTE:
The START switch will not energize unless the PRE-
HEAT switch is depressed. Depressing the
PREHEAT
switch
activates
the
glow plugs in the cylinder head so use the PRE-
HEAT i11lermittentiy
to
avoid overheating the glow plugs.
GLOW
PLUG
An
air
intake
heater
is used in place
of
glow plugs
on
the
32
KW
generator. The
preheat
sequence
described
is the
same.
PREHEAT:
Depress the
PREHEAT
switch.
The
voltmeter and
pane! lights, gauges and meters will be activated.
The
PRE-
HEAT switch should
he
depressed
in
accordance with the
following chart:
Temperature/Preheat
Atmospheric
Temperature
Preheating
Time
+41°F(+5
D
C)
or
higher
Approx.
10
seconds
+41°F(+5°C)
to
23°F
(-5°C)
Approx.
15
seconds
+23°F(-5°C)
or
lower
Approx.
20
seconds
Limit
of
continuous
use
30
seconds
before
cranking
START:
While still depressing the PREHEAT switch, depress
the
START switch. This will engage the starter solenoid.
Upon engine starting, release the START switch.
Do
not
release the
PREHEAT switch until the oil pressure reaches
15
psi. Then
as
long
as
the high water temperature and low
oil pressure prOlective circuits do not activate, the
engine
will
remain energized and continue to run.
NOTE:
When starting:
A voltage drop
will occur
when the preheat switch
is
depressed.
Should
the
engine
not start when the
START
switch
is
depressed for 10 to
20
seconds, release both switches and
wait
30
seconds; repeat the procedure
above
and preheat
longer.
Never
run
the starter
for
more
than
30
seconds.
A
CAUTION:
Prolonged
cranking
intervals
without
the
engine
starting
can
result
in
the
engine
exhaust
system
filling
with
raw
water.
This
may
happen
because
the
pump
is
pumping
raw
water
through
the
raw
water
cool-
ing
system
during
cranking.
This
raw
water
can
enter
the
engine's
cylinders
by
way
of
the
exhaust
manifold
once
the
exhaust
system
fills.
Prevent
this
from
happening
by
closing
the
raw
water
supply
through-hull
shut·off,
draining
the
exhaust
muffler,
and
correcting
the
cause
of
the
excessive
engine
cranking.
Engine
damage
result·
ing
from
raw
water
entry is
not
a
warrantable
issue;
the
owner/operator
should
keep
this
in
mind.
Remote
Starting
Procedure
The
remote start pane! is the same as the engine-mounted
start panel except that
it
has a green
LED
light and no
gauges.
When
starting at a remote location, the green LED
lights when the generator
is
running at approximately
nOO
rpm. This indicates when the
START
switch
can
he
rcleased
since the starting
of
the
generator
may
not
bc audible.
A.
When
the
PREHEAT
switch
is
depressed
at
the
remote
startfstop panel the
LED
light will illuminate. When the
START switch
is
depressed and the starter cranks the
engine this
LED light will dim.
When
the engine starts
the
LED
light will brighten signaling to release the
START switch.
Continue
to hold the
PREHEAT
depressed for a few seconds to allow oil pressure to build
up
which closes the oil pressure safety switch that
is
in
the series path for 12V
B+
to
the fuel run solenoid. The
green
LED will remain brightly illuminatcd while
the
engine
is
running.
B. After the generator is started and the START switch
is
released, the
generator's
starter will not crank unless thc
PREHEAT
switch is operated first because this switch
supplies voltage to the
START switch.
Once
the
engine
starts,
check
the
engine's
instruments
for
proper
oil pressure and battery charging voltage. Apply a
light load to the generator and allow the
engine's
operating
temperature to
come
up to
140-150'
(60-66" C) before
applying heavy loads.
NOTE:
Some unstable running may
occur
ill
a cold ellgille.
Depressing the
PREHEAT
switch/or
10-J5 second intervals
will
help stabilize the engine rpm until the operating
temperature reaches
140 - 150
0
F
and
a load
is
applied!O
the engine.
STARTING
UNDER
COLD
CONDITIONS
Make
sure the lubricating oil
confonns
with the ratings for
the prevailing temperature.
Check
the table in the ENGINE
OIL section
in
this manual.
-..v
WESTERBEKE
Engines & Generators
7