TP-6198 3/15 57Section 5 Component Testing and Adjustment
5.10 Fault Shutdown Tests
Verify the operation of the generator set overspeed,
overcrank, and low oil pressure shutdowns by
performing the following tests. If these tests are
inconclusive, test individual shutdown circuit
components (wiring harness, switch, etc.) as described
elsewhere in this section.
5.10.1 Controller Fault Shutdown
Functions
Check the operation of the fault functions programmed
in the ADC 2100 by performing the following tests. If the
ADC 2100 does not operate a s described, check the
controller configuration settings; see Section 4.9. Also
check the controller wiring and connections.
Low Oil Pressure (LOP) Shutdown
Oil Pressure Switch: Connect a jumper wire from the
LOP switch (lead 13) to the generator set ground. Start
the generator set. Verify that the generator set shuts
down on an LOP fault after approximately
25--35 seconds of operation. Remove the jumper wire
from the LOP switch and ground. Start the generator set
and run it for at least 25--35 seconds to verify that the
generator set does not shut down.
Oil Pressure Sender (OPS, optional): Remove
connector P7 from the oil pressure sensor. Connect a
jumper between pins A and C on the connector. Start
the generator set and run for at least 35 seconds Ve rify
that the generator set shuts down and the ADC display
indicates an LOP fault. If the ADC does not shut down
on an LOP fault, test the OPS harness and connectors.
Overcrank Shutdown
Disconnect the starter motor lead at the starter solenoid.
Move the controller master switch to the RUN position.
Observe that the generator set simulates cranking for
15 seconds and then rests for 15 seconds Check that
the generator set shuts down after the third crank/rest
cycle.
High Engine Temperature Shutdown
Remove the connector from the coolant temperature
sensor (CTS) and connect a jumper across terminals A
and B (black and white leads). Start the generator set.
Verify that the generator set shuts down and the ADC
display indicates fault HE approximately 5 seconds
after the generator set comes up to speed. Remove the
jumper wire. Start the generator set and run it for at least
30 seconds to verify that the generator set does not shut
down.
5.10.2 Fault Shutdown Switches
Check the low oil pressure and high engine temperature
shutdown switches on the engine by performing the
following tests. If the sensor does not function as
described, replace it.
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
areinplace.
Moving parts.
WARNING
Servicing the generator set when it is operating. Exposed
moving parts can cause severe injury or death. Keep
hands, feet, hair, clothing, and test leads away from the belts
and pulleys when the generator set is running. Replace
guards, screens, and covers before operating the generator
set.
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage. Do not contact electrical
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
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