RR TRENT 900 OIL SYSTEM

In RR Trent 900 Oil System, who monitors the main oil parameters?

what computer transmits oil parameters to SD and FWS?

In RR Trent 900 Oil System, Feed oil is circulated by?

Acts as a by-pass for cold starting and system blockage protection in Oil pump unit

In Trent 900 Oil System, what cleans the feed oil?

Monitors Pressure Filter condition and provides a cockpit indication that the filter is becoming clogged.

A differential pressure transducer monitors the pressure filter condition and provides a cockpit indication that the filter is becoming clogged, this switch is set to operate at a differential pressure of?

What are the two functions of Fuel-Oil-Heat-Exchanger (FOHE)?

What protects the cooler core of FOHE when the engine oil is very cold or if the core is blocked?

What prevents oil suction from the FOHE during engine shut down?

In Trent 900 Oil System, how many scavenge pump element are installed?

In RR Trent 900, How many positions for installing magnetic chip detectors (MCDs) are there?

The oil outlets from the scavenge pumps join to form a combined scavenge return flow which is sampled by?

Filters scavenged oil before returning back to oil tank.

The 15- micron fine scavenge filter has a by-pass valve which allows oil to bypass Scavenge Filter at what differential pressure?

The 15- micron fine scavenge filter ha a pressure differential transducer which give cockpit indication of impending filter clogging at what differential pressure?

Cockpit indication of scavenge line oil temperature are from Temperature Sensors located at?

On RR Trent 900 Oil System, what prevents oil loss from the bearing chambers?

On RR Trent 900, all scavenge oil is de-aerated when it enters the oil tank by a?

What is used to clean and cool the oil tank sight glass?

What component separates air and oil before discarding the air to atmosphere?

What happen to the oil after it separates from air in the centrifugal breather?

The oil spilled during servicing is collected in the?

A potentiometer style device with changes in resistance indicating different oil levels. It is consisting of a series of reed switches and resistors that form a ladder activated by a float containing a permanent magnet. Measures the quantity of engine oil in the oil tank to provide a cockpit indication.

The output voltage from oil quantity transmitter is measured by?

The needle and the digital indication are normally green. The digital indication pulses if the oil quantity drops below?

In RR Trent 900 Oil System, what type of oil pump assembly that consists of a pressure pump and nine scavenge pumps to scavenge oil from the various areas of the engine back to the oil tank?

The pressure pump has a pressure relief valve, this protects the system for cold starting and blockage protection and is set to what pressure?

A non-bypass type filter installed inside the filter housing and can be accessed by removing the filter cover?

The Pressure Filter is a 125-micron cleanable type filter and has a life of?

What prevents the loss of oil when the pressure filter is changed?

What prevents oil draining back to the pressure pump when the engine is shut down?

Where does the oil pressure pump and pressure filter assembly are installed?

Where does the Electric Master MCD is positioned?

The Engine Monitoring Unit (EMU) continuously monitors the EMCD during flight. When does EMU generates an EMCD debris maintenance message?

What prevents oil leakage when the MCD is removed for inspection?

Non-cleanable, by-pass type filter. If the filter element becomes clogged, the by-pass valve opens and allows the oil to flow directly back to the tank.

The scavenge filter differential pressure switch monitors the pressure at the inlet & outlet of the filter and provides an indication when the filter becomes partially clogged. The switch is set at 13 psid. When oil temperature becomes low, what computer will inhibit the filter clog message?

Purpose of Centrifugal Breather?

Where does the Centrifugal Breather installed?

What drives the Centrifugal Breather?

Where does the Fuel-Oil-Heat-Exchanger located at RR Trent 900 Engine?

In RR Trent 900 Oil System, the oil pressure transducer assembly which consists of two transducers supplied by the same oil pressures. The oil pressure transducers assembly measures the differential oil pressure between?

The needle and the digital indication of oil pressure are normally green. The needle and the digital indication will turn red if the oil pressure drops below?

Purpose of Low Oil Pressure Switch in the Oil system?

What are the two oil pressure warning conditions? Oil pressure less than an N3 related value (Amber) Oil pressure less than the minimum threshold (Red)

When the oil pressure falls below the amber value but remains above the low-pressure switch limit, what will be the cockpit display?

When the engine is running and 2 out of 3 inputs oil pressure value are below threshold, what will be the cockpit display?

What will be the cockpit display if there is a pending blockage of either the pressure filter or scavenge filter?

In the event of a failure of one of the sensors, the EEC shall select the remaining valid sensor. When there is a disagreement between the two measurements, what will the EEC do?

The oil temperature displays in degrees C on the ECAM SD screen and is normally green. The indication turns Amber if?

The pressure pump has a pressure relief valve, this protects the system for cold starting and blockage protection and is set to what pressure?

In RR Trent 900, if the engine has been stopped for less than 6 hours and the oil level is low, what you should do?

In RR Trent 900, if the engine has been stopped for more than 6 hours and the oil level is low, but not below 4.73 liters (5 US quarts) from the required level, what you should do?

When installing the housing of oil pressure filter, what precaution must be done?

You must only tighten the filter housing with your hand only. If you use tools you can cause damage to the screw threads.