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MT Trainee > Traction Siemens - Pneumatics > Flashcards

Traction Siemens - Pneumatics Flashcards

1
Q

What makes up the air supply unit

A

Air compressor
Air dryers
Compressors pressure switch

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2
Q

What are the pressures on the two safety valves in the air supply system

A

Comp and airdryers valve - 1100
Air dryers and MR 1050

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3
Q

What is the air compressor governor set to (to start compressor)

A

850kpa

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4
Q

What is MR operating pressure

A

850-1000kpa

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5
Q

If the pressure governor has been isolated will the air compressor run continuously?

A

Yes

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6
Q

What makes up the air suspension system (3)

A

Levelling valves
Air bags
Surge reservoirs

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7
Q

What does the levelling valve do

A

Inflates and deflates air bags according to loading

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8
Q

How many levelling valves on no.1 bogie T car

A

2

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9
Q

What us thr brake control system made up of (4)

A

Service
Holding
Emg
Park brake

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10
Q

What does service brake use

A

EP and ED

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11
Q

What speed does EP use

A

Up to 10km

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12
Q

What is holding brake pressure

A

110kpa

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13
Q

What is B1 pressure?

A

57kpa

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14
Q

Can the train roll if MC moved from 0 to B1/2/3?

A

Yes as they have less brake cylinder pressure than holding

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15
Q

When service brake apply, what two lights will flash?

A

Maintenance and general fault (not an issue)

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16
Q

How long must MC remain in 0 before moving handle to power to brake or vice versa?

A

1 second

17
Q

Does SPB apply automatically when key is removed?

A

Yes

18
Q

What pressure does MR need to fall below to apply SPB?

A

350

19
Q

Where are park brake cylinders located?

A

Wheels 3 and 7 on all cars

20
Q

What speed if park brake applied will safety loop deenergise?

A

5km

21
Q

Train will default to EP if braking effort falls below what %

A

99%

22
Q

What do the sanders work in conjunction with (2)

A

BCU and Wheel slip unit

23
Q

What 4 things are fitted to each sand box

A

Padlock
Red LED (sand below 20%)
White manual test button
Sight glass

24
Q

What temperature do the sander heaters activate

A

5⁰

25
Q

What speed do sanders not operate below?

A

5km

26
Q

How long do you press the sanding button for and how long do you ensure sand flows

A

1 and 1 second

MT Trainee (53 decks)

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