Specifications
SAFETY
SHUTDOWN
SENSORS
AND
SWITCHES
SAFETY
SHUTDOWN
SWITCH/SENSORS
The
engine
is
protected
by
four automatic
shutdown
circuits.
Should a
shutdown
occur,
do
not attempt
to
restart
without
finding and correcting the
cause.
Refer
to
the
heading
Engine
starts,
rWlS
and
then
shuts
down
in
the
ENGINE
TROUBLESHOOTING
section of
this
manuaL
The
following
is
a description of these automatic
shutdown
circuits:
High
Exhaust
Temperature
Switch
An
exhaust temperature switch
is
located
on
the
water
injected exhaust
elbow.
Normally closed,
this
switch
will
open
and
the
ECU
will
interpret
this
as
a
high
exhaust
temperature
and
open
the
K2
run
relay,
stopping
the
generator.
The
exhaust
temperature
LED
on
the
panel
will
illuminate. The
switch
opens
at
260-270F
(127-132C).
This
switch
resets
(contacts close)
at
approximately
225F
(107C).
HIGH
EXHAUST
TEMPERATURE
SWITCH
Water
Temperature
Sensor
If
i'
MOUNTED
ATTHE
EXHAUST
ELBOW
A water temperature sensor
is
located
at
the
thermostat
housing.
This
sensor
sends
a
DC
voltage
to
the
ECU
that it
interprets
as
engine antifreeze coolant temperature. Should
this
voltage reach a set
value,
the
ECU
will interpret
this
as
high
antifreeze coolant temperature
and
open
the
K2
run
relay,
stopping
the
generator.
The
overheat
LED
on
the
panel
will
then
illuminate.
Oil
Pressure
Sensor
An
oil
pressure
sensor
is
located off
the
engines
oil
gallery.
Oil pressure
on
the
sensor
affects
the
DC
voltage
through
the
sensor
to
the
ECU.
Should the voltage reach a preset
value,
the
ECU
will
interpret
this
as
a
low
oil
pressure
issue
and
open
the
K2
run
relay,
stopping
the
generator.
The
oil
pressure
LED
on
the
panel
will
illuminate.
JiO
~
~
~q.~
:3
~
P
Engine
DC
Circuit
Breaker
Oil
PRESSURE
SENSOR
The
generator's engine
DC
circuit
is
protected
by
a
rocker
type
DC
20
amp
breaker mounted
on
the
control
box.
This
also serves
as
an
Emergency Stop
Switch.
Excessive
DC
current
draw
or
DC
electrical overload
anywhere
in
the
instrument
panel
wiring or engine
wiring
will
cause
the
breaker
to
trip
to
the
OFF position. In
this
event,
the
DC
power
to
the
ECU
will be interrupted,
stopping
the
generator.
No
panel
LED
will
illuminate. Check
and
repair
the
source
of
the
problem.
After repairing
the
fault,
reset
the
breaker
and
restart
the
generator.
High/Low
RPM
Shutdown
Should
the
generator's
RPM
go above
20%
of
the
specified
1800
rpm
@
60
HzJ1500
rpm
@ 50
Hz,
the
ECU
will
shut
the
engine
down
on
an
over speed fault
and
illuminate
the
over speed
LED
on
the
control panel
and
remote start/stop
panel
when
installed
Should
the
generator's
RPM
fall
below
20%
of
the
specified
1800
rpm
@
60
HZ/I500
rpm
@
50
Hz,
the
ECU
will shut
the
engine
down
on
an under speed fault
and
this
will
cause
the
over speed LED
to
flash.
The
OBD
(On
Board Diagnostic) will
also
show
these
faults.
Engines & Generators
9