Table of Contents
Advertisement
! &
Detection circuit-...... This detects quantity
of oil, sufficient or not, according to difference
of
electric resistance across inner and outer electrodes.
n
n
&
Delay circuit
a .
e .
-
This his prevents the sensor from making an unnecessary stop of the engine
by momentary lowering of the oil level due
to the engine being slanted or
affected by vibration in spite of sufficient oil in the crankcase.
. n
&
Stopping circuit.
*
.
* *
+
-
This automatically stops the engine running.
Also, the LED indicator for warning can be lit &hile the engine is being
stopped. We have the wires to be connected to LED available.
5-5-5 CAUTIONS TO BE TAKEN ON HANDLING THE SENSOR
(1) Oil sensor unit
a
Be sure not to damage each wire.
Broken or short-circuited power supply wires andior a grounding wire in particular may lead to
malfunction or breakdown.
i &
The sensor is not interchangeable from engine to engine because the sensor is to be exclusively
A
installed individually in each engine employed.
(2) Mounting and wiring of oil sensor unit
A
: &
Although this has been designed to have enough anti-noise properties in practical use, do not route
the sensor wirings in the vicinity of noise-generating sources such as ignition plugs or high voltage
cords. This may cause malfunction or breakdown.
Since capacity of power source is limited, current flown in the electronic circuit of the sensor is
kept as low as possible.
Be sure to use terminals with a high contact reliability of more than that of tinned terminals.
n
(3) Operation of oil sensor
n
: &
If operating with the engine kept tilted, oil surface inside
of the engine varies and the correct
oil
level can not to be detected which in turn obstructs the preventing function of engine seizure.
Operate the engine by keeping it level.
. &
When starting the engine with
an insufficient oil in the crankcase, engine starts once then
it stops
n
automatically after it runs for 5 seconds.
When the engine has been stopped
by the oil sensor, voltage remained
in the electronic circuit
prevents the sensor from being re-started for 3 seconds after the engine stop.
Try to re-start the engine after 3 seconds or more.
A
- 35 -
Advertisement
Table of Contents
