-
the APU page on the lower ECAM display unit,
-
the APU SERVICE DATA page on the MCDU.
R EFF : 001-049, 101-105, 107-107, 151-199, 49-90-00Page 1 201-210, Config-2 Aug 01/05
CES
C. Low Oil Pressure and High Oil Temperature Warning The low oil pressure and high oil-temperature warning-system together with the ECB 59KD monitor the APU oil pressure and the oil temperature. The system protects the APU against low oil pressure and high oil temperature. When the ECB 59KD receives the low oil pressure or a high oil-temperature signal, it starts the APU automatic shutdown-sequence (Ref. 49-61-00).
D. Oil Heating An APU oil heater is installed on the APU gearbox. The APU oil heater increases the temperature of the oil in the APU gearbox oil reservoir if the oil temperature is too low.
R EFF : 001-049, 101-105, 107-107, 151-199, 49-90-00Page 2 201-210, Config-2 Aug 01/05
CES OIL - DESCRIPTION AND OPERATION
_______________________________
1. General
_______ The APU oil system lubricates and cools the power section, load compressor, gearbox and AC-Generator. This system is made up of:
-
an integral wet-sump lubrication system with an APU mounted oil cooler,
-
an oil level, high oil temperature and low oil-pressure monitoring system. The Electronic Control Box (ECB) 59KD monitors these parameters.
2. System Description
__________________
A. Storage and Distribution The oil storage and distribution system supplies filtered, temperature and pressure regulated oil to:
-
the engine,
-
the APU generator.
The system has:
-
an integral oil reservoir with a magnetic chip detector, an oil level sensor and an oil level sight glass,
-
an oil pressure pump,
-two oil scavange pumps,
-
an oil filters,
-
an oil cooler,
-a de-oiling valve.
The APU has an integral lubrication system that lubricates and cools:
-
the power section,
-
the load compressor,
-
the accessory gearbox,
-
the generator.
B. Indicating The oil indicating system shows you if the oil quantity in the integral oil reservoir in the accessory drive gearbox is sufficient or if an oil servicing is necessary. The ECB 59KD monitors the oil quantity through the oil level sensor in the static condition (when the APU does not operate). The set minimum agrees with the ADD mark on the oil sight glass on the gravity oil fill-port. When the ECB 59KD receives a low-oil quantity signal from the oil level sensor, it transmits the signal to:
-
the Electronic Instrument System (EIS) (Ref. 31-60-00),
-
the Centralized Fault Display System (CFDS).
You can read the oil quantity information on the EIS and the Multipurpose
Control & Display Units (MCDUs) in the cockpit on:
-
the APU page on the lower ECAM display unit,
-
the APU DATA/OIL page on the MCDU.
C. Low Oil Pressure and High Oil-Temperature Warning The low oil pressure and high oil-temperature warning-system together with the ECB 59KD monitor the APU oil pressure and the oil temperature. They also monitor the temperature of the APU generator scavenge oil. The system protects the APU against low oil pressure and high oil temperature. When the ECB 59KD receives the low oil pressure or a high oil-temperature signal, it starts the APU automatic shutdown-sequence (Ref. 49-61-00).
OIL ((GTCP 36-300)) - SERVICING
_______________________________
R **ON A/C 001-003, 051-099, 401-499,
TASK 49-90-00-600-001 Check Oil Level and Replenish (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______
WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific overflow drain hose
No specific container 10.0 l (2.6416 USgal)
No specific container 3.0 l (0.7925 USgal)
No specific access platform 3.5 m (11 ft. 6 in.)
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