General Questions Flashcards
Parking Brake:
Under what pressure is the parking brake applied?
Which equipment is the pressure falling in?
3.5bars
Main Reservoir
Parking Brake:
At what pressure does the parking brake release?
6.5bars or above
Parking Brake:
When operating the Isolating Cock Parking Brake (ICPB), where is air pressure released from?
It vents the air from the parking brake cylinders, this applies the parking brake springs
Auxiliary Compressor:
What does the Auxiliary Compressor run on?
How long can you run the Auxiliary Compressor?
Batteries
No more than 30minutes
Main Compressor:
What does the Main Compressor run on?
What is the operating pressure?
Auxiliary transformer
6.5 - 7.5 bars
Low Main Air Governor:
Where can it be found?
At what pressure will it cause the emergency brakes to come on and off?
Parking Brake Cupboard
Emergency Brake Applied below 5.2bars
Emergency Brake Released above 6.2bars
What reservoirs does the Main Reservoir supply air to?
Brake Reservoir and Suspension Reservoir
Explain how air ends up in the bellows
Main Compressor > Main Reservoir > Main Res Pipe > Suspension Reservoir > Surge Reservoir > Bellows
Explain how air flows to the brakes
Main Compressor > Main Reservoir > Main Res Pipe > Brake Reservoir > Brake Chest > Brake Cylinders
When a unit is cut-in from dead, what must you remember?
Keep all doors shut and wait for WSP self test to finish.
What connections are always live on the Electrical Connection Box (below coupler)
Signal bell
PA
Cab to Cab
What three positions are there on the drum switch?
Coupled
Air only
Uncoupled
Name 16 things that brake wire 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
For what reason do you need to use the Emergency Bypass Switch (EBS)
What does EBS do?
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
Where can you drive from if you have used EBS?
Only from the cab it has been used in
List how to isolate the pantograph and VCB.
(DMS)Pan down > (PTS)Pan Isolating Cock > (PTS)VCB Isolating Cock > (DMS) Pan up if 8 car unit
Do you need to start the desk to operate the Pan Down button?
No.
Why would the PTS fault light illuminate?
Primary and Secondary overload relay
Low oil (conservator tank)
Bucholz
Qualitrol
What two set of doors, if isolated, puts your train out of service?
When can you remain in service?
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.
What needs to work in your cab in order for you to EBS?
Brakes AWS/TPWS Low main air governor DSD Drum switch
16 things that break wire 13
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
