General Questions

Question 1

Parking Brake:
Under what pressure is the parking brake applied?
Which equipment is the pressure falling in?

Answer 1

3.5bars

Main Reservoir

Question 2

Parking Brake:

At what pressure does the parking brake release?

Answer 2

6.5bars or above

Question 3

Parking Brake:

When operating the Isolating Cock Parking Brake (ICPB), where is air pressure released from?

Answer 3

It vents the air from the parking brake cylinders, this applies the parking brake springs

Question 4

Auxiliary Compressor:

What does the Auxiliary Compressor run on?

How long can you run the Auxiliary Compressor?

Answer 4

Batteries

No more than 30minutes

Question 5

Main Compressor:

What does the Main Compressor run on?
What is the operating pressure?

Answer 5

Auxiliary transformer

6.5 - 7.5 bars

Question 6

Low Main Air Governor:

Where can it be found?
At what pressure will it cause the emergency brakes to come on and off?

Answer 6

Parking Brake Cupboard

Emergency Brake Applied below 5.2bars
Emergency Brake Released above 6.2bars

Question 7

What reservoirs does the Main Reservoir supply air to?

Answer 7

Brake Reservoir and Suspension Reservoir

Question 8

Explain how air ends up in the bellows

Answer 8

Main Compressor > Main Reservoir > Main Res Pipe > Suspension Reservoir > Surge Reservoir > Bellows

Question 9

Explain how air flows to the brakes

Answer 9

Main Compressor > Main Reservoir > Main Res Pipe > Brake Reservoir > Brake Chest > Brake Cylinders

Question 10

When a unit is cut-in from dead, what must you remember?

Answer 10

Keep all doors shut and wait for WSP self test to finish.

Question 11

What connections are always live on the Electrical Connection Box (below coupler)

Answer 11

Signal bell
PA
Cab to Cab

Question 12

What three positions are there on the drum switch?

Answer 12

Coupled
Air only
Uncoupled

Question 13

Name 16 things that brake wire 13

Answer 13

Brake controller MCB
AWS/TPWS
Low Main Air Governor
DSD
Drumswitch
Passcom
Egress
Brake controller in emergency
Master switch set to neutral above 6mph
More than 1 driving desk open
Auxiliaries
Control Positive
Brake Res Governor
Battery Positive MCB
Control Supply

Question 14

For what reason do you need to use the Emergency Bypass Switch (EBS)

What does EBS do?

Answer 14

Used when you are unable to fix a brake fault

EBS by-passes wire 13 by making a circuit around the cab its been operated in

Question 15

Where can you drive from if you have used EBS?

Answer 15

Only from the cab it has been used in

Question 16

List how to isolate the pantograph and VCB.

Answer 16

(DMS)Pan down > (PTS)Pan Isolating Cock > (PTS)VCB Isolating Cock > (DMS) Pan up if 8 car unit

Question 17

Do you need to start the desk to operate the Pan Down button?

Answer 17

No.

Question 18

Why would the PTS fault light illuminate?

Answer 18

Primary and Secondary overload relay
Low oil (conservator tank)
Bucholz
Qualitrol

Question 19

What two set of doors, if isolated, puts your train out of service?
When can you remain in service?

Answer 19

Both behind the drivers cab
Two sets of doors on the same side of a vehicle

You can remain in service if you are able to lock the carriage out completely.

Question 20

What needs to work in your cab in order for you to EBS?

Answer 20

Brakes
AWS/TPWS
Low main air governor
DSD
Drum switch

Question 21

16 things that break wire 13

Answer 21

Auxiliaries
Battery positive
Control positive
Train supply
Brake MCB

Drum switch
DSD
Brake Res governor
Low main air governor

Master switch in N over 6mph
Brake controller in emergency
More than one desk open

Passcom
Egress
TPWS
AWS