With the bleeder valve closed and
the shut-off valve in the oil pressure
line open, start and operate the set
instrumentation) and at no load.
Open the bleeder valve slightly to
purge air from the system.
Close the bleeder valve and record
the oil pressure as indicated on the
Almost completely close the shut-off
Slowly open the bleeder valve until
the low oil pressure protective
device shuts down the engine.
Record the reading of the oil
pressure gauge at the point of set
shutdown (see figure 515.1-II).
Record operation of the malfunction
Repeat (a) through (f) for the
Results. Compare the value of shutdown
pressure with the requirement of table 16-1.
16-22. OVERTEMPERATURE PROTECTIVE DEVICE
General. The overtemperature device must be
capable of protecting the engine in the set
against overheating for any reason.
Apparatus. Instrumentation for measuring load
conditions and set and ambient temperatures
shall be as described and illustrated in MIL-
HDBK-705, Method 205.1, paragraph 205.1.10.
Preparation for test.
Connect the load instrumentation in
figure of MIL-HDBK-705, Method
205.1, paragraph 205.1.10.
Install a thermocouple to measure
the same temperature as seen by
the protective device sensor.
Start and operate the generator set
at rated voltage, rated frequency
(speed), and rated load.
overload sensors on fan motor
contactor, located in the 2c central
Continuously monitor the temper-
ature seen by the thermocouple
installed in paragraph 16-22c(1)(b)
above. Record the temperature at
protective device actuates. Record
If the engine fails to shutdown
when the temperature exceeds the
maximum trip value specified in
table 16-1, the test shall be
Results. Compare the results with the require-
ments of table 16-1.
16-23. PHASE SEQUENCE TEST (ROTATION)
General. Unless the phase sequence (rotation)
of the load