Idex Hale Sam, Техническое руководство

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168
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0-300 psiA sensor
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an average signal voltage of 0.5 VDC equals 0.0 psiA
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an average signal voltage of 4.5 VDC equals 300.0 psiA
4.16.2.6 Temperature Sensor Troubleshooting
There are two [2] temperature sensor on a SAM system. One for gearbox temperature and one
for pump water temperature. See FSG-PL-01501/-01502/- 01513 (Sheet 1) for temperature
sensor locations. The two potential issues with a temperature sensor are: One it is NOT giving
feedback or, Two the feedback is incorrect.
No Temperature
If the temperature sensor is NOT providing feedback (an output), the Oil or Water readings (Out-
put/Input password, Table 3, page 36) on the Input screen (Figure 135) will display a value of
450.
Figure 135. Output/Input Screen
Check the harness connections and ensure the sensor is receiving power. If both are true, the
sensor may need replaced. See Table 78 (page 153), HIGH GEARBOX TEMPERATURE under the
SYMPTOM column.
Erroneous Temperature
Ensure engine exhaust is NOT blowing directly on sensor.
Recalibrate the sensor using the Pump Controller (Gearbox Temperature Calibration password,
Table 3, page 36). Refer to paragraph 5.6 (page 184) to calibrate a temperature sensor.
4.16.2.7
Water Present Sensor Troubleshooting
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The water detection sensor uses a black electrode to detect the presence or absence of wa-
ter and actuates a solid-state switched output voltage to SAM. The input supply voltage for
this sensor is equal to the system voltage. When no water is sensed, the sensor outputs zero
voltage. Once water is detected, the sensor outputs a signal voltage that is equal to the in-
put voltage. This sensor is used in the SAM system to:
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Detect water in the gearbox and indicate a faulty operating condition
• Detect water in the Q Series pump autolube and indicate a faulty operating condition
•
Detect water in the priming system and indicate a successful priming operation