·
OIL
PRESSURE
OIL
PRESSURE
SENDER
The engine oil pressure is continually monitored
by
the
ECU
in the generator control panel
when
the engine is running,
Should the oil pressure fall below a safe operating level, the
generator will shut-down and the control panels low oil
pressure fault
LED
will illuminate. Should this occur,
do
not
· attempt to re-start the generator.
Check
the oil level and the
condition (consistancy)
of
the oil.
If
there is a loss
of
oil,
inspect the engine for leaks. Inspect
the
wire connections at
the oil gallery (Pressure
Senser).
OIL
PRESSURE
SWITCH
An
oil pressure switch is located
on
the right side
of
the oil
filter mounting bracket. This is a normally open contact
switch.
It
functions with the time relay circuit to ensure
DC
voltage
to
the circuit is terminated when the unit shuts down.
TESTING
THE
OIL
PRESSURE
SENDER
To test
the
engines oil pressure,
remove
the oil pressure
switch in the oil gallery and install a mechanical oil pressure
test gauge.
Start the engine, and with the engine running at
its
normal RPM, record the pressure.
OIL
PRESSURE
AT
1800/1500
35-45
PSI
OR
MORE
OIL
PRESSURE
.
TEST
GAUGE
·
LOW
OIL
PRESSURE
OIL
GALLERY
REMOVE
THE
OIL
PRESSURE
SWITCH
TO
INSTALL
THE
TEST
GAUGE
OIL
PRESSURE
AT
1800/1500
35-45
PSI
OR
MORE
A legitimate loss
of
oil pressure can
be
the result
of
a faulty
oil pressure relief valve
or
possibly worn bearings in the
engine.
MEASURING
EXHAUST
BACK
PRESSURE
Exhaust systems normally produce resistance to the flow
of
exhaust gases, causing back-pressure. Back-pressure must be
kept within a certain limit.
Check
the
back-pressure
before
the
generator
is
put
back
into
service.
To test exhaust pressure, connect either a water column or
PSI tube to the test part on the exhaust elbow
as
shown.
Check the exhaust back-pressure before the generator
is
put
into service. Measure the back-pressure after the engine has
reached its normal operating temperature, and at the point
where it is about to reach its rated load at either
1500 rpm
(for
50Hz applications) or 1800 rpm (for 60Hz applications).
Back-pressure should not exceed 1.5 psi
(0.11
kg/em\
MEASURING
EXHAUST
BACK
PRESSURE
45
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!·
PSI
GAUGE
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