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Metro157 > Comeng Cab & Saloon equipment > Flashcards

Comeng Cab & Saloon equipment Flashcards

1
Q

When would the low pressure flag be displayed?

A

Pressure in the main reservoir is below a safe level (500KPA)
Ep brake is inoperative due to a failure or isolation of the power supply to the lock out magnet valve
The BVIC is closed

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2
Q

How would you isolate the LP flag?

A

EP MR isolate cock behind the panel door in the van area near the park brake

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3
Q

Name the isolating cocks in the van area behind the panel?

A 
Panto EP isolate
MA EP isolate
Trip gear isolate
BP sensor isolate
Panto and MA isolate
EP MR isolate
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4
Q

What is the trip latching lever used for?

A

To raise and lower the trip

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5
Q

Where does the air come from to operate the trip latching lever?

A

The control reservoir

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6
Q

What is the compressor contractor?

A

Electrical switch that is used to turn on or off the air compressor on the motor car that the switch is located in

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7
Q

When would you use traction equipment reset?

A

Reset tripped overloads in the traction system
When traction motors fail to power
Rheostatic brake fails to set up

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8
Q

Name the four gauges in the centre consol from left to right

A

Brake cylinder gauge
Duplex gauge
Speedometer
Ammeter

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9
Q

What bogie does the brake cylinder gauge read from?

A

Bogie 1

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10
Q

What does the red needle indicate on the duplex gauge?

A

Air pressure on your main reservoir

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11
Q

What does the white needle represent on the duplex gauge?

A

Brake pipe air pressure

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12
Q

How long must the doors open and closed buttons be held?

A

2 seconds

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13
Q

How long do you need to hold the spring park brake button for?

A

5 seconds

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14
Q

How long should the saloon light on and off switch be held for?

A

2 seconds

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15
Q

How often does the mad button make an audible beep?

A

10 second intervals

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16
Q

What does LSM stand for?

A

Low supply module isolating switch

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17
Q

When would you place the LSM isolating switch to stop?

A

Pantograph will not raise or remains raised
Motor alternator will not start
Pantographs lower for no apparent reason
EP circuit breaker trips continually

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18
Q

Name the isolating cocks in the cab area near the foot pilot valve?

A

Wiper washer isolate cock
Uncouple isolate cock
Whistle isolation cock
Vicers whistle isolation cock

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19
Q

What does the BVIC control the flow of?

A

Main reservoir air to the automatic air brake valves and into the brake pipe through the brake controller
EP and rheostatic brake selector switches
Electrical current to LP flag and lockout magnet valve
Electrical current for blue door closed lights

20
Q

What does the EP circuit breaker protect?

A

The EP brake circuit and disabling the ep brake and rheo from the entire train

20
Q

What happens if the EP brake circuit breaker trips?

A

Rheostatic and EP brake won’t work, the lockout magnet valve will become de energised and cause the automatic air brake to become active and your primary source of brake

21
Q

How many DC circuit breakers need to be tripped for the train to fail?

A

All of them, only one that has been set is necessary for the train to be operational

22
Q

What circuit breakers are train lined?

A

DC supply circuit breaker
Control circuit breaker
Compressor sync circuit breaker
Auxiliary control circuit breaker

23
Q

What does an air conditioner fault light flashing mean?

A

Two air conditioners have failed in the same carriage

24
Q

What does a steady air conditioner fault light mean?

A

One air conditioner has failed in at least one carriage

25
Q

What does the local fault light illuminated indicate?

A

There has been an overload tripped within the traction equipment system or rheostatic braking system

26
Q

What does the line switch fault light illuminated indicate?

A

Fault within the power supply to the traction motors or line breaker case

27
Q

What does it mean if the wheel slip status light is illuminated when stationary?

A

Indicates a fault in the wheel slip system

28
Q

What does this car light illuminated indicate?

A

It indicates that any other fault light that is on (except for supply) is applicable to that car
It also indicates if the spring park brakes are active on that motor car

29
Q

What does the Supply light illuminated mean?

A

That the 110v supply is active in the train and Atleast one motor alternator is active

30
Q

How long is the timer for the emergency saloon lights?

A

2 hours

31
Q

After how long until the emergency saloon lights begin to flash?

A

1 hour and 45 minutes

32
Q

What does the Programmable Logic Control (PLC) control?

A 
Saloon door chimes
Saloon door secondary release function 
Door indicator lights 
Door delay 
Foot pilot valve
33
Q

How long is the timer for a TD to be inserted after the BVIC has been opened?

A

3 minutes

34
Q

What 3 questions are asked from the control governor?

A

Is the trip set
Is the doors closed
Is there enough pressure to stop the train

35
Q

What does the control circuit breaker protect?

A

Reverser, master controller, rheo brake, panto raise and lower, traction overload reset and control governer

36
Q

What happens if a control circuit breaker is tripped on a rear motor car?

A

Constantly flashing blue door closed lights

37
Q

What happens if the auxiliary control circuit breaker trips?

A

Train will fail with the saloon doors in the open position

38
Q

What does the auxiliary control circuit breaker protect?

A

BAD SCARS
Bell, auxiliary start, doors release and close, saloon lights on and off, couple and uncouple, air con #1 control, local rheo and scharfenburg self centring

39
Q

What would keep a door closed light to keep flashing?

A

Door system fault
Control circuit breaker trips in a rear cab
Rear motor tail lights turned off
PLC circuit breaker tripping in trailing motor
Uncoupled train still senses being coupled
Auxiliary circuit breaker tripped on another cab
Open circuit in the train cable
Second BVIC is opened

40
Q

How long will the Pantograph Compressor operate before turning off?

A

3 minutes

41
Q

Where is the PLC circuit breaker located?

A

Above door 3

42
Q

What happens if the centre cab marker lights are set to auto red or white?

A

Door loop system won’t be continuous throughout the train

43
Q

How long do the door chimes activate for?

A

60 seconds until the doors close

44
Q

How long after the control governor bypass buttons flash does it need to be pressed?

A

Within 10 seconds

Metro157 (81 decks)

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