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B. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
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LOW OIL PRESSURE WARNING SYSTEM - DESCRIPTION AND OPERATION
___________________________________________________________
1. Low Oil Pressure Switch
_______________________
(Ref. Fig. 001, 002)
- The low oil pressure switch is located on the lubrication unit outlet line.
- Actuation of the low pressure switch is at: 16 psid (1.10 bar) increasing pressure 13 psid (0.90 bar) plus or minus 1 psid (0.07 bar) decreasing pressure
2. Low Oil Pressure Indication (Warning)
_____________________________________
(Ref. Fig. 003)
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
(Ref. Fig. 004)
R **ON A/C 106-149, 303-399, 401-499,
(Ref. Fig. 004A)
**ON A/C ALL
When the oil pressure drops down 13 psid (0.90 bar) plus or minus 1 psid
(0.07 bar) (decreasing) the pressure switch closes; in result:
- The MASTER WARN light (red) located on the glareshield comes on.
- The audio warning is activated
- The ENG page appears on lower display unit of the ECAM system : Oil pressure indication flashes red.
- Warning messages appear on the upper display unit:
ENG 1, (2) OIL LOW PRESS
THROTTLE 1, (2) IDLE
- Activation on the ground of the following circuits:
WN (Emergency Escape Slide Release Warning)
CC (Engagement and Internal Monitoring)
CA (Electrical Power Supply)
When the oil pressure reaches 16 psid (1.10 bar) increasing, the pressure switch opens; in result:
- The MASTER WARN light goes off.
- the audio warning is deactivated
- the oil pressure is indicated in green
- warning messages disappear on the upper display unit of the ECAM
- Inhibition of the following circuits:
WN (Emergency Escape Slide Release Warning)
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Low Oil Pressure Switch - Location
Figure 001
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Low Oil Pressure Switch - Installation
Figure 002
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R Low Oil Pressure Switch Warning Figure 003
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Low Oil Pressure Switch Indicating
Figure 004
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Low Oil Pressure Switch Indicating
Figure 004A
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CC (Engagement and Internal Monitoring)
CA (Electrical Power Supply)
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SWITCH - LOW OIL PRESSURE (4000EN) - REMOVAL/INSTALLATION
_________________________________________________________ TASK 79-34-15-000-041 Removal of the Low Oil Pressure Switch (4000EN)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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