M0170.docx | Rev 1.2 | Modified on 20/04/2016 | © Remote Control Technologies P/L
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HYDRAULIC OIL TEMPERATURE SWITCH
Every 2000 hours or six months
1. If temperature faults are present and tests performed on the electrical circuit prove inconclusive, it is
recommended that the oil temperature switch be replaced.
2. Due to the critical function of this switch, it is recommended that the oil temperature switch be replaced
every 2000 hours or every six months.
OIL/FUEL LEVEL SWITCH
Every 2000 hours or six months
1. It will be necessary to remove the switch for testing.
2. Remove switch and plug hole to prevent fluid loss.
3. Inspect the switch for physical damage.
4. Reconnect the 3-pin Deutsch plug.
5. Turn the ignition switch to the ON position.
6. Verify the oil/fuel level alert indicator is now illuminated.
7. Immerse the threaded end of the switch in oil and verify that the oil/fuel level alert indicator is no longer
illuminated.
8. If the switch tests okay, refit the switch using thread sealant.
TEST PROCEDURE
The testing of the EPS control unit should ideally be
performed when the operator first checks the machine
at the beginning of each shift or when the machine is
due for its scheduled service. The testing of the engine
protection control unit incorporates a system test
switch, this allows the service person and/or operator to
easily test the EPS control unit.
In order to test the EPS control unit, the following test
procedure should be followed.
CONTROL UNIT
1. Start and run the machine as per normal (raise the RPM above idle if the idle control function is used).
All alert indicators on the control unit should light up and activate the alarm on initial start-up, and cease
immediately once the control unit has detected that the engine oil pressure has been pressurised.
2. If the control unit has detected a fault upon start-up, for example, if the engine temperature is high, the
fault will be present on the control unit upon start-up of the machine.
3. Press and hold the control unit test switch, all alert indicators on the control unit should illuminate
immediately and the alarm control circuit will activate, sounding the alarm.
4. Having depressed the system test switch for 10 seconds, the engine ETR output will turn off, shutting
down the engine if the engine shutdown option of the control unit is being utilised. If the shutdown option
is not being used, the machine will return to idle when an alert indicator is activated.
5. Once the system test switch has been released, the EPS system will return the machine to its normal
operation so that the machine can be restarted and returned to normal operation if machine shutdown
has occurred.
Note
: The 10-second period is adjustable.
System Fault Procedure
1. If the test procedure has been performed and the system has not functioned as per above, report the
malfunction to the supervisor before operating the machine.
2. Should any fault (visual or audible) be detected while operating the machine or if the engine RPM drops
below its normal operating level, the machine should be parked safely ensuring the park brake is
applied. The engine should then be shut down, and the malfunction reported to the supervisor.
System Test
Switch