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Comeng Traction > Comeng Traction > Flashcards

Comeng Traction Flashcards

1
Q

What does the Low Pressure (LP) flag indicate?

A

-Pressure in the main reservoir is below a safe level (500kPa)

-The EP brake is inoperative (either due to a failure or isolation of the power supply to the Lock Out Magnet Valve

-The Brake Valve Isolating Cock and Switch is closed (BVICS)

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2
Q

If a fault occurs causing the main reservoir pressure to fall below 500kPa, what will occur?

A

The Low Pressure warning flag (LP) will rise vertically

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3
Q

If there is a failure of the power supply to the EP brake, or the EP circuit breaker trips, what will we de-energised?

A

The Magnet valve will be de-energised and the LP flag will raise

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4
Q

Can the LP flag be isolated?
If so, how?

A

Yes
With the EP MR isolate cock (behind panel door. Turn to vertical position)

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5
Q

The trip latching lever is used to raise and lower the trip
Where is the compressed air supplied from to this switch?

A

From the Control Reservoir

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6
Q

Where can the isolating cock for the horn/whistle be found?

A

Top isolating cock under the dash

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7
Q

What is the Traction equipment reset button used for?

A

To reset tripped overloads in the traction system

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8
Q

On the duplex gauge, what colour needle indicates what?

A

RED= Main Res
White= Brake pipe

RED needle shows air pressure in the Main Reservoir

WHITE needle shows air pressure in the Brake Pipe

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9
Q

What does the ‘LOCAL’ fault light indicate when illuminated?

A

An overload tripped within the traction equipment system or rheostatic braking system (of that train set 3-car)

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10
Q

What does the ‘AIR CONDITIONER’ fault light indicate?

A

Off= aircons working correctly

Steady light= ONE aircon has failed in at least one carriage

Flashing light= TWO aircons have failed in one carriage

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11
Q

How long is the timer for the Emergency Marker light system?
How can it be reset?

A

2 hour timer

To reset, turn switch to any position and then return back. Must be done in both the lead and trailing motor cars

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12
Q

STABLING INDICATOR LIGHT
If the marker light switch is in AUTO, what will happen when the ‘pantograph down’ button is pressed?

A

The stabling indicator light will flash for 15 minutes
After the 15 minutes, both the indicator light and marker lights will switch OFF

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13
Q

What are the positions of the Reverser?

A

OFF
FORWARD
NEUTRAL
REVERSE

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14
Q

What will happen when the reverser is put in neutral?

A

The train lined Spring Park Brakes will automatically apply after 60 seconds

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15
Q

What are the four powering positions and one non-powering position of the Master Controller?

A

Notch 0= COAST
Notch 1= SHUNT
Notch 2= SERIES
Notch 3= PARALLEL
Notch 4= WEAK FIELDS

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16
Q

What do the positions of the master controller indicate?

A

0 Coast= no power, trim will roll. Use when braking

1 Shunt= lowest power. Used for shunting

2 Series= limited power (prevent wheel slip in wet)

3 Parallel= more power (prevent wheel slip in wet)

4 Weak Fields= quickest acceleration

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17
Q

How is the train lined Park Brake released?

A

Reverser in forward, neutral or reverse

Green park brakes OFF button pressed for 5 SECONDS

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18
Q

What does the Motor cut-out panel enable?

A

Isolate the traction motors if they become defective
All motors, or pairs (1&2 or 3&4) can be isolated

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19
Q

What is the Memory Aid Device (MAD)?
What must it be used for?

A

Yellow button, flashes yellow with a beep at 10 second intervals when pressed

Must be used after exploding ATWs

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20
Q

When might it be required to place the LSM (Loss of overhead, Shutdown Module) isolating switch to OFF?
What does it do?

A

When:
-Pantographs will not raise or remain raised
-Motor alternator will not start
-Pantographs lower for no reason
-EP circuit breaker trips continually

It protects the overhead from defective equipment on the train

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21
Q

What does the BVICS (Brake Valve Isolating Cock and Switch) control the flow of?

A

-Main reservoir air to the automatic air brake valves and into the Brake Pipe through the Brake Controller

-Electrical current to the EP and Rheo brake selector switches in the brake controller

-Electrical current to the Low-Pressure flag and lock-out magnet valve

-Electrical current to the door monitoring circuits for the blue door closed lights

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22
Q

What is the EP brake Circuit Breaker?
What happens when it is tripped?

A

It protects the EP brake circuit

When tripped, the EP and Rheostatic brake will not operate throughout the train (when tripped on the active motor car)
This will de-energise the lockout magnet valve and cause the automatic air brake to become active

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23
Q

What does the DC Supply Circuit Breaker protect?
What happens when tripped?
How many need to be set for a train to be in service?

A

Protects the DC supply circuit
If ALL DC supply circuit breakers are tripped, the train will fail

Only ONE DC supply circuit breaker needs to be set for the train to remain in service

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24
Q

What does the Control Circuit Breaker protect?
What happens when tripped?

A

Protects:
-Control Circuit Reverser
-Master Controller
-Rheo brake
-Pantograph Raise and Lower
-Traction Overload Reset
-Control Governor

When tripped on leading motor car the train will fail
If tripped on rear motor car, blue door closed light will constantly flash

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25
Q

What does the Auxiliary Control Circuit Breaker protect?

A

-Bell
-Auxiliary Start
-Doors Release and Close
-Saloon lights on and off
-Couple and Uncouple
-Aircon #1 control
-Local Rheo brake
-Schafenberg self-centering

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26
Q

What does the Compressor Governor IC protect?
What happens if tripped?

A

Protects the compressor governor circuit
When tripped, the compressor governor on that motor car will no longer monitor main reservoir pressure
*The train-lined Park Brakes On and Off buttons will not operate in this cab when tripped

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27
Q

Is a controller key required to isolate traction motors?

A

Not required to isolate all
Key required to just isolate 1&2 or 3&4 individually

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28
Q

What are the Van Area Isolating Cocks?

A

-Panto EP Valve
-MA EP Valve
-Trip Gear Raise/Lower switch
-BP Sensor
-Panto and MA EP Valves
-ER MR (LP stop flag)

(Puppies Make The Best Pets Ever)

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29
Q

What key is used to isolate the Door Loop Bypass key switch?

A

The VICERS key (blue controller key)

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30
Q

Where are the Saloon area Circuit Breaker?
What do they control?

A

Above Saloon door number 3
(9 circuit breakers)

Control:
-Saloon lights
-General Power Outlets (GPO)
-Doors
-Air Conditioner Alarm

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31
Q

What are the components fitted to the Programmable Logic Control (PLC)?

A

-Saloon Door Chimes
-Saloon Door Secondary release function
-Door open and closed buttons in drivers cab
-Door delay closing relay
-Foot Pilot Valve
-Flashing Door Closed Light relay
-Control Governor Bypass Flashing Light and Button
-Secondary Pilot Valve
-Door Loop Bypass controls

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32
Q

How is the DDU activated?

A

Open the BVICS

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33
Q

What is done on the DDU if there is altered running?

A

Auto announcements are disabled

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34
Q

After how long with the power off must the TDN be re-inserted?

A

More than three minutes

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35
Q

When can a PEI call be answered?
After how long does it time out?

A

When safe to do so

The call will timeout after 90 seconds

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36
Q

What must be done if a PEI call times out?

A

Make a PA announcement to ascertain if there is an emergency
(Ask passenger to re-press)

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37
Q

How will the driver be notified that the PEI has been activated?

A

An audible tone will beep and the words PASSENGER EMERGENCY will appear on the bottom of the DDU

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38
Q

What microphone is used to answer PEI calls?

A

Only the microphone fitted to the DDU

39
Q

What are the four positions of the Reverser?

A

Off
Forward
Neutral
Reverse

40
Q

When will the train-lines spring park brake automatically apply?

A

-When the reverser is moved to OFF
-60 seconds after the reverser is moved to NEUTRAL

41
Q

What position must the Reverser be in to RELEASE the spring park brakes?

A

Forward
Neutral
Reverse

42
Q

What are the positions of the Master Controler?

A

0 = OFF
1 = SHUNT
2 = SERIES
3 = SERIES-PARALLEL
4 = WEAK FIELDS

43
Q

What position of the Master Controller is used for Coasting?

A

0
OFF

44
Q

To what wheels are Spring Park Brakes fitted on a Comeng?

A

On MOTOR CARS only, on wheels 1,3,5 and 7
(Odd wheels)

45
Q

What holds the Spring park brake OFF?

A

Main reservoir pressure

46
Q

What puts the brakes ON with the spring park brake?

A

The SPRING
Air release

47
Q

What type of brakes (disc or pad) does a Knorr have?

A

Disc brakes

48
Q

What type of brakes (disc or pad) does a Westcode have?

A

Tread brakes

49
Q

How does a driver apply the Spring Park brakes? (Button)

A

Pressing the RED park brake ON button for FIVE SECONDS

50
Q

How does a driver release the spring park brakes? (Button)

A

Pressing the GREEN park brake OFF button for FIVE SECONDS
(Will only release if the reverser is in forward, neutral or reverse)

51
Q

How soon after a Motor Alternator has started (after raising pantos) will the train-lined ON/OFF buttons for the spring park brake become energised?

A

60 seconds

52
Q

When will the Spring park brakes automatically apply?

A

-The reverser is moved to OFF
-60 seconds after the reverse is moved to NEUTRAL

53
Q

Is there a system that ensures the park brakes remain released when train speed is over 8km and the reverser is not in off?

A

Yes

54
Q

How can the spring park brake be manually released on a Knorr?
Manually applied?

A

ONE anti-clockwise turn (by hand) of the Knorr Knurled Knob located on the outer end of the brake cylinder

It CANNOT be manually applied

55
Q

How can the spring park brake be manually released on a Westcode?
Manually applied?

A

-Using the switch stick on the Hexagonal nut on the brake cylinder
-6 to 8 turns anti-clockwise

Reapplied by turning the nut 40-60 turns clockwise (until tight)

56
Q

What is VICERS comprised of?

A

-The Vigilance control system
-The Event Recording System

57
Q

What does the Vigilance control system comprise of? (5)

A

-Task linking of drive controls
-Vigilance Acknowledgement button
-Vigilance Audible Buzzer
-Vigilance Fault Indicator
-Vigilance Activation valve

58
Q

What is the Event Recording System comprised of?

A

-VM40 Event recorder
-Roof Mounted GPS antenna

59
Q

On a Comeng, what actions are VICERS task linked?

A

-Master controller operation
-Brake controller operation
-Whistle

60
Q

What are the positions of the VICERS key switch?

A

-OPERATE (normal operation)
-ISOLATE (for isolation during a defect)
-TEST (to initiate drivers test)

61
Q

Can a drivers key turn the VICERS key switch back from isolate to operate?

A

No, only a pink maintenance key can

62
Q

How is the VICERS application valve reset?
(When timing cycle has not been acknowledged and brake has been applied)

A

-Reduce Brake pipe pressure below 25kPa
-Have speed at ZERO
-Wait 10 seconds (from activation)
-Press Vigilance Acknowledge button

63
Q

How is the VICERS system tested?

A

-Brake pipe needs to be fully charged (above 500kPa)
-Reverser is in the OFF position
-Trip is lowered and set
-BVICS is open

Then use key to turn the key switch to TEST

64
Q

How is the Trip lowered (cut in)?

A

-Open BVICS and charge brake pipe to 550kPa
-Put Trip Latching lever to the DOWN position (discharge air from trip)
-Place brake controller into EMERGENCY (exhaust all air)
-Return brake controller to Run and Release (charge brake pipe)
-Place Brake into Step 7

65
Q

How is the Trip raised (cut out)?

A

-Train must be stationary
-Place Trip latching lever to the UP position (discharge air from trip)
-Place brake to Emergency (exhaust all air)
-Return brake to Run and Release (charge brake pipe)
-Brake controller to Emergency (exhaust all air)
-Close BVICS
-Place brake to Run and Release

66
Q

How is the Trip reset? (After activation)

A

-Place brake to Emergency
-Depress Manual reset button on top of the Trip valve

67
Q

What must brake pipe pressure be below for the Trip Valve to reset?

A

25kPa

68
Q

When is a driver required to do a running brake test?

A

-A driver changes over (including mid-run)
-The direction of travel is changed
-The train consist has been altered

69
Q

When must a Low Speed Running Brake Test be conducted?

A

When docking a previously prepared train (when someone else preps a train for us, multi prep. Done in a siding)

70
Q

What is the test method for a Low Speed Running Brake Test?

A

-At a speed less than 5km, place brake into full-service
-Observe braking effort using brake cylinder gauges
-Bring train to a stand
-Asses the braking performance

71
Q

When must a Running Brake Test- Service Brake be performed?

A

While the train is in motion and at a sufficient speed
Must be performed prior to the first scheduled stop

Performed after:
-Changing ends
-Relieving a train from another driver
-Changing the consist (divide or attach)
-A defect of, or alteration to, braking equipment
-Transitioning form dry to wet rail

72
Q

What is the test method for a Running Brake Test- Service Brake?

A

-Brake to the minimum application position
-Observe braking effort using ammeter and brake cylinder gauges
-Move brake hands further into braking zone
-Asses again for equivalent brake effort
-Return brake controller to Run and Release

73
Q

Can a ‘Running Brake Test- Automatic Air Brake’ be performed within the Inner suburban area?

A

No

74
Q

What faults can cause a Flashing Door Closed Light (FDCL)?

A

-Obstruction within the doors
-Door system faults
-Control circuit breaker tripped in rear cab
-Rear motor taillights turned off
-PLC circuit breaker tripping in any trailing car
-If the train has been uncoupled, but is still sensing it it coupled
-Auxiliary circuit breaker tripped in another cab
-An open circuit in the Train Cable
-A second BVICS open

75
Q

What is the PLC?
Where is it located?

A

PLC controls many electronic functions within the train

Located above DOOR 3 on all motor and trailer cars

76
Q

What items are connected to the PLC?
(Programmable Logic Controller)

A

-Drivers door indicator lights
-Door closing delay relay
-Door chimes
-Secondary release feature
-Foot pilot valve
-Door loop bypass

77
Q

What extra steps are required for a Full can unattended?

A

-Lock cab
-Take portable (TDN entered)
-Let train controller know
-PA if necessary

78
Q

What pressure must the Brake pipe be charged to, to lower the Trip?

A

500kPa

79
Q

How is Full Cab Unattended performed?

A

-Make PA if necessary
-Turn marker light to white (if returning to cab)
-Reverser to Off
-Observe park brake button has illuminated Red and the Park brake light on fault and status panel is illuminated
-Apply and isolate the automatic air brake (brake controller to emergency)
-Close BVICS
-Return the brake controller to RUN and ensure the brake cylinder pressure has increased to emergency pressure

-Remove and retain the controller key
-The park brake gauge indicates Park Brake Applied in leading cab
-Take all keys and portable DTRS (TDN activated)
-Close and lock all cab doors and windows

80
Q

How is Modified cab unattended performed?

A

-Leave BVICS open
-Brake controller in Step 7
-Reverser to OFF, marker lights to White
-Observe park brake is ON (lights)
-Fixed train radio volume UP
-Remove keys

81
Q

When must the hand operated pilot valve be held down?

A

In all master controller positions when the reverser is in FORWARD or REVERSE

82
Q

On the secondary circuit, what must be done?

A

Must set Foot pilot valve and press Control Governor Bypass button

83
Q

What equipment is connected to the Primary Safety Apparatus?
What faults would cause them to fail?

A

TECHAV

Trip- missing or failing to reset
Emergency application valve- unable to reset

Control Governor- not closing

Hand and foot operated pilot valve- unable to reset

Anti-neutralisation device- activating above 8km

VICERS Activation Valve- failing to reset after key isolation

84
Q

What is the RED EC (Emergency Circuit) Cock used for?

A

To isolate the Primary Safety Apparatus

85
Q

What is the Secondary safety equipment? (Emergency circuit)

A

FEEC

Foot operated pilot valve
Emergency pilot valve
Emergency control Governor
Control Governor by-pass push button

86
Q

How is the Emergency Circuit enabled?

A

-Secure the train (cab unattended)
-Turn the Red EC cock across the pipe
-Isolate VICERS key switch
-Operate foot pilot valve to the SET position
-Press the red control Governor by-pass push button (on console)

87
Q

After isolating the Red EC Isolating cock, after how long the Control Governor by-pass button begin to flash?
How often must it be pressed?
Can it be permanently held in?

A

Begin to flash after 30 seconds
Emergency brake after 10 if not pressed

Must be pressed every 40 seconds

Cannot be held in permanently. Emergency brake will occur

88
Q

Can train preparation commence if a drive observes any Safety banners, red flags or Danger, Men at work signs?

A

NO

89
Q

During train startup, what can must the pantographs be raised from?

A

Always the Leading cab first

90
Q

What are the three separate ways the pantographs can be raised?

A

-Main reservoir pressure
-Pantograph storage reservoir
-Pantograph emergency compressor

91
Q

What must be done before resorting to using the Emergency pantograph compressor?

A

The pantograph storage reservoirs in each cab must be checked for sufficient pressure (and used instead if possible)

92
Q

How is the battery-operated compressor used?

A

-Ensure the circuit breaker in the Van area cabinet is set
-Turn the two-way cock to the number 2 position
-Push the white start button. Listen for the compressor to start running
-Press the local Panto raise EP valve
-Once the local pantograph has raised, press the local M.A. start E.P valve

93
Q

How long after the alternator starting will the park brake ON valve be energised and the remote park brake On button be illuminated?

A

60 seconds

Comeng Traction (3 decks)

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