Xtrap Pneumatic, Suspension, Brake

Question 1

Main reservoir pressure

Answer 1

750 to 900 kpa

Question 2

Main reservoir safety valve

Answer 2

980 kpa

Question 3

Brake pipe pressure ( normal)

Answer 3

0kpa

Question 4

Brake pipe pressure ( rescue)

Answer 4

550kpa

Question 5

Holding brake cylinder pressure

Answer 5

120kpa

Question 6

Full service brake pressure

Answer 6

190kpa

Question 7

Emergency brake pressure

Answer 7

210 kpa

Question 8

At what pressure does the air compressor start to operate

Answer 8

650kpa

Question 9

What will happen if you turn the compressor governor isolating cock

Answer 9

When the compressor is running it will continue to run non stop
If the compressor is stopped it will not start

Question 10

Auxiliary reservoir air is used for what brakes

Answer 10

Pneumatic braking system( friction brakes)

Question 11

Name the 5 cocks in the auxiliary pneumatic equipment panel

Answer 11

Whistle
Coupler uncoupling
Trip cock device cylinder
Trip cock device reset
Auxiliary pneumatic panel

Question 12

What is the purpose of the trip cock device cylinder/ active

Answer 12

Isolate the trip and rendering it in the lower position

Question 13

What is the purpose of the trip cock device reset

Answer 13

If the trip does not want to reset check cock

Question 14

How many brake blocks per wheel

Answer 14

1

Question 15

On what wheels are the park brakes located

Answer 15

1,3 and 7

Question 16

What does the primary suspension consist of

Answer 16

2 rubber mounted springs

Question 17

Suspension that is bogie to bogie is primary or secondary

Answer 17

Primary

Question 18

Suspension that is bogie to saloon is primary or secondary

Answer 18

Secondary

Question 19

Name the 4 brake systems on the xtrap

Answer 19

Service brakes
Holding brakes
Emergency brakes
Spring park brake

Question 20

Service brakes are the blending of what 2 types of brakes

Answer 20

Electro dynamic ( ED)
Electro-pneumatic (EP) friction brakes

Question 21

If the ED brake is in effective or wheel slide what brake replaces it

Answer 21

EP friction brakes

Question 22

ED brakes operate at what speed

Answer 22

Above 10km

Question 23

At what speed does break bleeding happen

Answer 23

5-10km

Question 24

At what speed does the ED brake drop out and is replaced by EP brakes

Answer 24

5km

Question 25

At what speed do holding brakes apply

Answer 25

0.5km

Question 26

What applies spring park brakes

Answer 26

Spring pressure as main res air depleted

Question 27

What release spring park brakes

Answer 27

Main res air at increase

Question 28

Name the 5 emergency mode switch

Answer 28

1. Online holding brake inhibit 2. Normal 3. Rescued 4. Rescuing 5. Rescuing in propulsion

Question 29

Rescue: At what pressure does the safety loop open

Answer 29

Below 300kpa

Question 30

Rescue: At what pressure does the safety loop close

Answer 30

430kpa

Question 31

What pressure is the brake pipe during normal operating condition

Answer 31

0kpa