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Metro157 > Siemens Faults - Pnuematics > Flashcards

Siemens Faults - Pnuematics Flashcards

1
Q

How would a driver be notified the ED brake has dropped out?

A

Brake inhibit button will be illuminated

Brake cylinders will be sighted

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2
Q

How would a driver be notified EP brakes have not been released from the train?

A

Brakes on indicator not extinguishing when powering or coasting

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3
Q

How would a driver release a sticking EP brake?

A

By isolating the bogie

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4
Q

What wheels are park brakes fitted to?

A

Wheels 3 and 7

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5
Q

What would be a clear indication of a failed to release park brake?

A

Park brake light is on regardless of position
Retardation
Smoke

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6
Q

How would a driver try to remove the park brake stuck on?

A

Release via rotary switch
Ensure cab/train manned CB is set
Attempt to power against the brakes

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7
Q

If the train can be moved, what is the drivers duties?

A

De train at a platform and go to the first available siding

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8
Q

How fast can the train go with the park brakes applied before the safety loop opens?

A

5km/h

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9
Q

If the train cannot be moved with a park brake stuck on, what is the drivers duties?

A

Reactive track access
Full cab
Listen for air leaks

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10
Q

How does a driver release a stuck park brake?

A

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

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11
Q

True or false, Once manually released, the park brakes can be reapplied via application from the drivers cab

A

True

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12
Q

At what pressure does the uncouple button flash red?

A

Below 750kpa

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13
Q

What is the drivers duties if the Main Res has dropped to a pressure above 600KPA?

A

Keep an eye on the pressure
Continue as normal
Report defect to train control

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14
Q

What happens when main res drops below 600KPA?

A

Safety loop opened

Emergency brakes will apply

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15
Q

If an airbag or associated piping for the air suspension is leaking, what is the drivers responsibilities to isolate?

A

Isolate BOTH air suspension cocks on that car

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16
Q

What is the speed restriction if an airbag is deflated or isolated?

A

80km/h

17
Q

If the air bags have deflated, what is the train using for suspension?

A

A back up spring

18
Q

Where is the air supplied from for friction braking?

A

Auxillary res

19
Q

If main res is sitting at 700kpa, what could be causing this issue m?

A

Towing cock being in the rescue position

20
Q

True or false, main res between 600 and 850kpa is still operational?

A

True

21
Q

If main res is low, what can the driver do if time permits?

A

Locate leak
Check towing cock is in normal position (horizontal)
Ensure compressors are operating

22
Q

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?

A

Isolate main res end cocks, declare train disabled

23
Q

Upon rescue with a main res leak on leading motor, leading trailer, trailing trailer or trailing motor what is the procedure?

A

Isolate the bogies of the affected cars and release the spring park brakes

24
Q

Upon rescue on leading motor, leading trailer, trailing trailer, trailing motor with a main res leak, what direction will relief come from?

A

The direction in which the faulty cars are facing as cars with an isolated bogie cannot move forward

25
Q

If a compressor fault light and unit one or two illuminated and main res is below 600KPA, what is the procedure?

A

Inform TC
Request permission for train stable
Restart train

26
Q

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?

A

Obtain reactive track access
Locate compressor
Turn the pressure switch to isolate

27
Q

When is the only time sanders can be isolated by a driver?

A

Major damage due to striking debris

Major leak resulting in low main res pressure

28
Q

What should a driver do if whistle is sounding continuously?

A

Depress and release the whistle lever several times
Trip and reset DC/DC inverter front light/wiper
Windscreen wiper/horn cb

29
Q

If whistle is not sounding, what should a driver do?

A

Depress and release whistle several times

Inspect whistle iso cock

30
Q

For whistle defects, if isolating cock is set, what circuit breakers need to be reset or tripped and reset?

A

Windscreen wiper/horn cb

DC-DC Inverter front lights/wiper

31
Q

True or false - If a Siemens is rescuing a train electronically, the safety loop must be bypassed?

A

True

32
Q

What pressure does the compressor light come on?

A

850kpa

33
Q

What is connected to main res?

A

Park brake
Horn
Friction braking
Air bags

34
Q

Where are the safety valves and what pressure are they set?

A

Between compressor and air dryers - 1100kpa

Between air dryers and main res - 1050kpa

35
Q

With a main res leak in leading centre or trailing centre, what is the procedure?

A 
Isolate end cocks
Release spring park brakes
Isolate safety loop
Operate as per two isolated bogies
De train and shunt out

Metro157 (81 decks)

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