Monitoring)
Figure 002
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Oil Temperature Sensor Location on the Oil Supply Tube to the Forward Bearing
Sump (IDG Cooling System Control)
Figure 003
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Oil Temperature Sensor (ECU) (IDG Cooling System Control)
Figure 004
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Temperature range : from -70 deg.C to 300 deg.C (-94 deg.F to 572 deg.F).
C. Oil Temperature Indicating
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
(Ref. Fig. 005)
R **ON A/C 106-149, 303-399, 401-499,
(Ref. Fig. 005A)
**ON A/C ALL
(Ref. Fig. 006)
- Only the oil temperature for engine condition monitoring is indicated, on the ECAM display unit.
- The analog signal from the temperature sensor is transmitted to the EIU. The EIU transforms this signal into a digital signal.
- This digital signal is then transmitted to the lower display unit of the ECAM system through the FWCs and the DMC.
- Scale : the ECAM oil temperature indication is gratuated from 0 deg.C to 999 deg.C (32 deg.F to 1830.20 deg.F).
- Advisory level : the oil temperature indication flashes green when the temperature is higher than 140 deg.C (284 deg.F). The indication becomes amber and the MASTER CAUT light comes on when the oil temperature is higher than 155 deg.C (311 deg.F) or higher than 140 deg.C (284 deg.F) during more than 15 minutes.
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Oil Temperature Indication
Figure 005
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Oil Temperature Indication
Figure 005A
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R Oil Temperature Indication Figure 006
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- The EIU looks at both the outputs from sensor 4004 EN and from output of the ECU dedicated oil temperature sensor used for the control of the fuel return valve in the IDG oil cooling logic. This sensor is hardwired to ECU via J13 harness. This sensor could be used based on the fact that due to the engine and IDG oil cooling system design, there is a close relation ship between the engine and the IDG oil variation.1 deg.c change in the IDG oil correspond to 1 deg.c change in the engine oil while both oil temperature levels are different. The EIU performs a permanent cross check between sensor 4004 EN and the ECU dedicated sensor and flags sensor 4004 EN at fault if both outputs disagree. This disagree will trigger failure message "ECU 4000 KS OR OIL TEMP SENSOR 4004 EN". The EIU will not trigger this fault if the ECU dedicated oil temperature sensor is faulty as the cross check will nolonger take place and the EIU cross check logic is degraded. An ECU dedicated oil temperature sensor is announced by failure message "EOT SNSR, J13, ECU". The EIU receives the ECU dedicated oil temperature sensor input on label 316 from the ECU on the ARINC bus (See ASM 73-25/10). In addition, if the oil temp sensor 4004 EN indicates a temperature lower than -60 deg.c or greater than 210 deg.c, failure message "OIL TEMP SENSOR 4004 EN" will be set.
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OIL TEMPERATURE SENSOR (4004EN) - REMOVAL/INSTALLATION
______________________________________________________ TASK 79-32-15-000-041 R Removal of the Oil Temperature Sensor (Engine Condition Monitoring Sensor) R
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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