05 - Pneumatics and Suspension

Question 1

How much power is given to the Air Compressors?

Answer 1

400v AC

Question 2

How many Air Compressors are on a 3 car consist and where are they?

Answer 2

2 Air compressors both on the Trailer car

Question 3

One Air Compressor will operate so long as the main reservoir pressure is between?

Answer 3

750kPa and 900 kPa

This is the operating pressure of an X’trap

Question 4

How low does the main res pressure need to be for both Air Compressors to function simulatniously?

Answer 4

650kPa

Question 5

What does the Air dryer do?

Answer 5

Air Dryer removes Debris, moisture and oil from the supplied compressed air.

Question 6

What happens if you isolate the Compressor govenor during operation?

Answer 6

If you isolate the compressor govenor while it is running it will keep running, if you isolate it while it is not running it will not run intil de-isolated.

Question 7

What releaves pressure from the main res in the event the compressor govenor fails and too much air is being compressed? At what pressure will it operate?

Answer 7

The Safety vale, which will operate at 980kPa

Question 8

Where does pneuimatic braking system draw air from?

Answer 8

The Auxiliary resevoir, which gets it’s air from the main res.

Question 9

What can be isolated from the Auxiliary Pneumatic Panel?

Answer 9

TWATS

Trip Cock Device Cylinders

Whistle

Auxiliary Pneumatic Panel (all)

Trip Cock device reset

Schafenberg Coupler Uncoupling

Question 10

Spring Park Brakes are fitted on which wheels/axles?

Answer 10

Wheels 1 3 7

Axles 1 2 3

Question 11

What are all the different braking systems on an X’trap?

Answer 11

Service Brake

Holding Brake

Emergency Brake

Spring Park Brake

Question 12

In the Service brake, what is the max pressure during a Full Service brake?

Answer 12

190kPa

Question 13

What speeds is the Rheo/ED active?

Answer 13

All speeds above 10km/h unless Emergency braking

Between 5 and 10 EP and Rheo/ED blend.

Question 14

Which brake applied as the train speed falls below 0.5km/h?
Which types of break(s) are used?
How much brake pipe pressure?

Answer 14

The Holding brake
Disc and tread
120kPa

(This brake will release when traction is gained)

Question 15

How much pressure is applied by the Emergency brake?
What effect does the EB have on Rheo/ED?

Answer 15

210kPA
If Emergency brake is applied this will only apply friction (EP) brakes, Treads and Disc. It will cut Rheo/ED brakes even above 10km/h.

Question 16

How is the spring park break applied/released?

Answer 16

Mechanically applied (spring)
Pneumatically released (Main res pressure)

Question 17

Which key is needd to manually release the spring park brake?

Answer 17

The AX key

Question 18

Emergency mode Switch (EMS), what are the 5 positions?

Answer 18

1 - Holding Brake Inhibition

2 - Normal

3 - Rescued

4 - Rescuing

5 - Rescuing in propulsion

Question 19

When in a rescue, how much pressure will be in the brake pipe when fully charged?

Answer 19

550kPa

Question 20

During a rescue operation, the safety loop will open if the brake pipe falls below?

Answer 20

300kPa

Question 21

During a rescue operation, the safey loop will close as pressure in the brake pipe is charged above?

Answer 21

430kPA