Siemens Faults - Pnuematics Flashcards
How would a driver be notified the ED brake has dropped out?
Brake inhibit button will be illuminated
Brake cylinders will be sighted
How would a driver be notified EP brakes have not been released from the train?
Brakes on indicator not extinguishing when powering or coasting
How would a driver release a sticking EP brake?
By isolating the bogie
What wheels are park brakes fitted to?
Wheels 3 and 7
What would be a clear indication of a failed to release park brake?
Park brake light is on regardless of position
Retardation
Smoke
How would a driver try to remove the park brake stuck on?
Release via rotary switch
Ensure cab/train manned CB is set
Attempt to power against the brakes
If the train can be moved, what is the drivers duties?
De train at a platform and go to the first available siding
How fast can the train go with the park brakes applied before the safety loop opens?
5km/h
If the train cannot be moved with a park brake stuck on, what is the drivers duties?
Reactive track access
Full cab
Listen for air leaks
How does a driver release a stuck park brake?
Locate and isolate the bogie
Unlock and remove park brake lock and pin
Pull manual release towards you away from bogie
Once released replace lock and pin
Re instate bogie lodge tmm
True or false, Once manually released, the park brakes can be reapplied via application from the drivers cab
True
At what pressure does the uncouple button flash red?
Below 750kpa
What is the drivers duties if the Main Res has dropped to a pressure above 600KPA?
Keep an eye on the pressure
Continue as normal
Report defect to train control
What happens when main res drops below 600KPA?
Safety loop opened
Emergency brakes will apply
If an airbag or associated piping for the air suspension is leaking, what is the drivers responsibilities to isolate?
Isolate BOTH air suspension cocks on that car
What is the speed restriction if an airbag is deflated or isolated?
80km/h
If the air bags have deflated, what is the train using for suspension?
A back up spring
Where is the air supplied from for friction braking?
Auxillary res
If main res is sitting at 700kpa, what could be causing this issue m?
Towing cock being in the rescue position
True or false, main res between 600 and 850kpa is still operational?
True
If main res is low, what can the driver do if time permits?
Locate leak
Check towing cock is in normal position (horizontal)
Ensure compressors are operating
With a main res leak on leading motor, leading trailer, trailing trailer, trailing motor and the leak can’t be blanked, what is the procedure?
Isolate main res end cocks, declare train disabled
Upon rescue with a main res leak on leading motor, leading trailer, trailing trailer or trailing motor what is the procedure?
Isolate the bogies of the affected cars and release the spring park brakes
Upon rescue on leading motor, leading trailer, trailing trailer, trailing motor with a main res leak, what direction will relief come from?
The direction in which the faulty cars are facing as cars with an isolated bogie cannot move forward
If a compressor fault light and unit one or two illuminated and main res is below 600KPA, what is the procedure?
Inform TC
Request permission for train stable
Restart train
If train stable fails and a compressor fault light and unit one or two remains illuminated and main res is below 600KPA, what is the procedure?
Obtain reactive track access
Locate compressor
Turn the pressure switch to isolate
When is the only time sanders can be isolated by a driver?
Major damage due to striking debris
Major leak resulting in low main res pressure
What should a driver do if whistle is sounding continuously?
Depress and release the whistle lever several times
Trip and reset DC/DC inverter front light/wiper
Windscreen wiper/horn cb
If whistle is not sounding, what should a driver do?
Depress and release whistle several times
Inspect whistle iso cock
For whistle defects, if isolating cock is set, what circuit breakers need to be reset or tripped and reset?
Windscreen wiper/horn cb
DC-DC Inverter front lights/wiper
True or false - If a Siemens is rescuing a train electronically, the safety loop must be bypassed?
True
What pressure does the compressor light come on?
850kpa
What is connected to main res?
Park brake
Horn
Friction braking
Air bags
Where are the safety valves and what pressure are they set?
Between compressor and air dryers - 1100kpa
Between air dryers and main res - 1050kpa
With a main res leak in leading centre or trailing centre, what is the procedure?
Isolate end cocks Release spring park brakes Isolate safety loop Operate as per two isolated bogies De train and shunt out
