Hydraulic Panel

Question 1

What happens when the ENG 1/2 Pump and Blue ELEC Pump pb is set to OFF? On?

Answer 1

Off - pump is depressurized and the generation of hydraulic power stops

On - lights out, system is pressurized when the engines is running

Question 2

What happens when the FAULT light appears in amber on the ENG 1/2 and Blue ELEC Pump?

Answer 2

Amber caution CRC and ECAM when:

1. Low reservoir
2. Low air pressure
3. Low pump pressure
4. Overheat

Light goes out when the pump is turned off except for overheat. The fault light will go off when the overheat stops

Question 3

How is the blue electric pump started?

Answer 3

In Auto, Lights out, On position. Starts soon as one engine is started

Question 4

What happens with the PTU in the OFF position?

Answer 4

Both green/yellow PTU electrohydraulic valves close and power transfer stops

Question 5

Which direction does the PTU power?

Answer 5

It is bidirectional

Question 6

What happens with the PTU pb in the AUTO position? 4

Answer 6

Auto (lights out)

1. Automatically runs if the difference between the yellow and green hydraulics is greater than 500psi
2. The PTU is armed and both yellow and green electrohydraulic valves are open
3. Inhibited during the first engine start
4. It goes through a test during the 2nd engine start

Question 7

What happens when the PTU pb has a FAULT light?

Answer 7

Amber light and ECAM when:

1. Green or yellow reservoir: overheats, low air pressure, low fluid level
2. Lights go out when the crew select the pump off except overheat. It will stay on while there is an overheat

Question 8

Which of the hydraulic pb is spring loaded?

Answer 8

The yellow ELEC pump pb

Question 9

When does the FAULT light illuminate with the yellow ELEC PUMP?

Answer 9

Amber caution CRC and ECAM when:

1. Low reservoir
2. Low air pressure
3. Low pump pressure
4. Overheat

Light goes out when the pump is turned off except for overheat. The fault light will go off when the overheat stops

Question 10

What happens when the Yellow ELEC PUMP pb is in the On position

Answer 10

1. The pump is on

2. If power is cut, the pump will remain off even when power is restored

Question 11

What happens when the yellow ELEC pump pb is OFF?

When does it automatically come on?

With the yellow electric pump off, which two yellow systems are not inhibited?

Answer 11

Pump is OFF

Automatically comes on when the cargo door manual selector valve is set to Open or Close

Inhibits the operation of other yellow system functions except:
A. Alternate braking
B. Engine 2 reverse

Question 12

What happens when the guarded RAT switch is pressed?

Will the RAT automatically deploy in a dual hydraulic fault?

When does the RAT automatically deploy?

Answer 12

The RAT is extended manually.

The RAT does not deploy with a hydraulics failure

It does automatically deploy with a AC BUS 1 and 2 failure