Oil Quantity - Component Location
Figure 001 (SHEET 2)
CES
Oil Level - Block Diagram
Figure 002
CES 5. Component Description
_____________________
A. Oil Level Sensor The sensor is a Resistance Temperature Detector (RTD) type. The sensor is supplied by the ECB with a constant current of 75 mA. The resistance varies with the oil level and modifies the sensor output voltage. The ECB receives this output voltage and sends a warning signal to the EIS if low oil level condition is available.
6. Operation/Control and Indication
________________________________ (Ref. Fig. 001, 002, 003) The oil level sensor is energised and the output voltage is observed during a period of 8 seconds after ECB power-up. If the voltage differential exceeds a certain limit the oil level is too low. When the EIS receives the low oil level signals it automatically shows the APU system page with the advisory 'LOW OIL LEVEL' on the lower ECAM display unit. When you enter the CFDS, the MCDU shows on the APU DATA/OIL page the status of the oil level. The following schedule shows the amount of oil in the gearbox at the
-FULL-,
-ADD-,
-
Low Oil Quantity (LOQ)-,
-
Low Oil Pressure (LOP)-,
condition of the APU:
FULL ............ 5.43 l (1.44 USgal)
ADD ............. 3.95 l (1.05 USgal)
LOQ ............. 3.95 l (1.05 USgal)*
LOP ............. 3.05 l (0.81 USgal)* * These values are determined for A/C ground condition. The values can vary in relation of the different operating attitudes of the A/C in flight.
Oil Level - Schematic
Figure 003
CES
SWITCH - OIL LEVEL - REMOVAL/INSTALLATION
_________________________________________ R **ON A/C 001-003, 051-099, 401-499,
TASK 49-93-16-000-001 Removal of the Oil Level Switch (8087KM) (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______
WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : DO NOT LET OIL STAY ON YOUR SKIN FOR A LONG TIME AS IT CAN CAUSE
_______
INJURY.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific blanking plug
No specific circuit breaker(s) safety clip(s)
No specific warning notice
No specific access platform 3.5 m (11 ft. 6 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action
52-41-00-010-001 Open the APU Doors for Access
49-93-16-991-001 Fig. 401
3. Job Set-up
__________ Subtask 49-93-16-860-050
A. Aircraft Maintenance Configuration
(1)
Energize the ground service network
(Ref. TASK 24-42-00-861-001).
(2)
On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3)
Put a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-93-16-865-054
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
Subtask 49-93-16-010-050
C. Get Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT SW 11LJ to the ON position.
4. Procedure
_________
(Ref. Fig. 401/TASK 49-93-16-991-001) Subtask 49-93-16-020-050
A. Removal of the Oil Level Switch (8087KM)
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