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Tom 231 > Comeng Traction > Flashcards

Comeng Traction Flashcards

1
Q

Spring Park Brakes Operate how?

A
  • Spring to apply
  • Main Res air to release
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2
Q

On every odd numbered wheel there is a…

A

Frequency Generator

Sends message to wheel slip unit to correct if wheel slip happens

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3
Q

What is the equalising reservoir used for?

A

It forms part of the Brake Controller equipment, and allows the brake pipe to be charged.

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4
Q

Air compressor supplies air to which reservoir?

Runs on 1500vDC

A

Main Res

A motor Altinator must be operating to allow air compressor to run

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5
Q

Control Reservoir supplies compressed air to?

A
  • Electro-pneumatic valves in the main equipment case.
  • Trip Latching Lever
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6
Q

How long does emergency lighting last for in a power outage?

A

2hrs

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7
Q

Motor Altinator runs on?

A

1500vDC

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8
Q

Motor Alternator outputs 110vDC and 415vAC
The 415vAC supplies what?

Also 240- 24v

A
  • Saloon lights
  • Headlights
  • Air Conditioners
  • Traction Cooling Fan
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9
Q

When operating the uncouple buttons what is achieved..

A
  • Mechanical unlocking of the 2 scharfenberg couplers
  • Electrical separation of train cable and closing of hinges covers
  • BP an MR connections closed
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10
Q

The trip latching lever in the drivers cab uses compressed air supplied from?

A

Control res

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11
Q

Saloon door control buttons must be pressed for a minimum of how long?

A

2 secs

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12
Q

Air Conditioner fault Light

1.OFF
2.STEADY
3.FLASHING

A
  1. All A/C working
  2. One A/C failed in at least one carriage
  3. Two A/C failed in the one carriage
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13
Q

When Stabling a train, what position must the marker light switch be in?

A

AUTO position

Other positions, Centre cab OFF, Red, White

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14
Q

When reverser is in Neutral (once the train is staionary) how long until the train lined Spring Park Brakes will autoimatically apply?

A

60 sec

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15
Q

Spring PArk Brake Release Button

To release all park brakes, the reverser is placed into Forward, Off/Neutral or Reverse, and the green park brakes OFF butten is pressed for how long?

A
  • Release 5 secs
  • Apply 5 secs
  • PLacing reverser to OFF automatically applies train lined park brakes
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16
Q

Saloon light on and off switch (Driver lower RH wall control panel) must be pressed for minimum of?

A

2 secs

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17
Q

Memory Aid Device

When active beeps at intervals of how long?

A

10secs

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18
Q

BVICS controls the flow of:

Allows the driver to control the braking functions of the train.

A
  • MR air to the automatic air brake valves and 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 circuitd for the blue door closed lights
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19
Q

Programmable Logic Control

Components fitted to the PLC are:

A
  • Door Chimes
  • Secondary door Release Function
  • door indicator lights
  • Door delay closing relay
  • Foot pilot valve
  • Flashing door closed light relay
  • Control governor bypass flashing light and button
  • Door loop bypass
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20
Q

Brake Pipe operating Pressure?

A

550Kpa

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21
Q

Brake Pipe FULL SERVICE Reduction

A

380-410kpa

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22
Q

The BVICS controls the flow of

A
  • MR air to the automatic air brake valves in the brake controller
  • Electrical current to the EP and rheostatic brake selector switches in the brake controller
  • Electrical current to the low-pressure flag and lockout magnet valve
  • Electrical current to the door monitoring circuits for the blue saloon door closed lights
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23
Q

Flashing Door Closed Light

FDLC can be caused by…

A
  • Door obstruction
  • 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 and the coupler is still sensing it is coupled
  • An Auxiliary circuit breaker tripped in another cab
  • An open circuit in the train cable
  • A second BVICS open
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24
Q

Items Connected to the PLC

A
  • Driver Door Indicator Lights
  • Door CLosing Delay Relay
  • Door Chimes
  • Secondary Release Feature
  • Foot Pilot Valve
  • Door Loop Bypass

triple D, FSD

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25
Q

TECHAV equipment and relevent faults that would cause them to fail?

A

Trip- missing or failing to reset
Emergency application valve- Unable to reset
Control Govenor- Not closing
Hand and foot pilot valve unable to reset
Anti-neutralisation device- activating above 8km
Vicers- Activation Valve failing to reset after key isolation

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26
Q

Name the secondary safety equipment?

A

Foot operated pilot valve
Emergency pilot valve
Control governor by-pass button
Emergency control govenor

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27
Q

What tasks need to be completed during a P/M prep?

A
  • Visual inspections- All Motor Cars
  • External inspections- All Cars
  • Full Cab Inspections- All Motor Cars
  • Continuity test
  • Pantograph test

60mins

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28
Q

What M/L prep tasks need to be completed?

A
  • Visual inspections- All Motor Cars
  • External Inspections- All cars
  • Full Cab Inspections- Leading Motor and trailing Motor
  • Continuity Test
  • Pantograph Test

37mins 6 car, 20 3 car

Full CAb inspection-

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29
Q

BP operating Pressure

A

550kpa

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30
Q

BP minimum reduction

A

50kpa

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31
Q

BP full service reduction

A

380-410kpa

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32
Q

EP Brake step 1 + 2

A

75

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33
Q

EP Brake step 7

A

250kpa

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34
Q

Emergency BC pressure

A

275kpa

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35
Q

Trip lowering BP pressure

A

Above 500kpa

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36
Q

Trip reset BP pressure

A

0kpa

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36
Q

MR operating pressure

A

585-725kpa

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37
Q

Control res minimum pressure

A

490

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38
Q

Control Governor Test BP pressure fall below

A

290kkpa

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39
Q

Control Governor opens

A

310-340kpa

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40
Q

Control governor closes

A

400-430kpa

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41
Q

Trip test BP must fall below

42
Q

Continuity Test- BP pressure must fall below

43
Q

What does the Variable Load Valve do?

A

Monitors air pressure in the air suspension system, adjusting brake cylinder pressure depending on load -(passengers), allowing braking performance to remain constant.

44
Q

What does the Restricted Application Limiting Valve and Ball CHeck Valve do?

A

Gives the extra 10% brake cylinder pressure when using automatic air brake, above that available for EP baking.

Also adjusts brake cylinder pressure during rheo braking to a HOLDING PR

45
Q

What does the Seven step relay valve do?

A

Converts the electrical code signals from the brake controller into 7 equal step of air pressure during EP braking.

Controls the flow of MR air on that car to the brake cylinders

46
Q

What does the TRIple Valve do?

A

Controls the flow of compressed air to:
* Brake pipe auxiliary res to prepare for brake application
* Auxiliary re to brake cylinders to apply the brake
* Brake cylinders to atmosphere to release the brake

47
Q

What does the Release Ensuring Valve and dump Valve do?

A

Dump Valve:
* reduces air pressure in th Auxiliary res (when emergency brake is applied ontop of EP
REV
* removes 14kpa from aux res (when brake handle is placed to run release when operating the EP brake) ENSURING TRIPLE VALVE IS IN THE RELEASE POSITION.

Basically avoids Sticking brakes

48
Q

What does the bypass check valve do?

A

In certain conditions rpovides MR air to reach the brake cylinders.

49
Q

What does the Hand release vlave do?

A

Manual release of brake cylinder air pressure on that vehicle during brake defects or maintenance.

50
Q

Auxiliary res is charges with?

A

Brake pipe pressure, by the action of the triple valve.

air pressure then used on brake cylinders on a westcode system

or Pre-control res on a Knorr

51
Q

EP braking uses compressed air from where?

52
Q

If the EP brake becomes defective, can it be isolated?

A

Yes.
By tripping the EP brake circuit breaker

53
Q

Continuity Test

How long should the van area emergency cock be opened for? and what BP pressure should it reduce below?

A

15secs-
and observe BP pressure reduces below 300kpa

54
Q

Continuity test

When closing the van area emergency cock what should the BP pressure increase to and within how long?

A

425kpa
within 40 secs

57
Q

Attaching at a platform

The driver of the first 3 cars to arrive must stop where on the platform?

A

The 6 car platform stopping mark

58
Q

Empty car running speed?

A

Half the track speed, or 40kms

59
Q

Comeng, modified cab unattended, before leaving the cab the driver must:

A

Leave the BVICS OPEN
Brake controller handle in step 7

60
Q

When is a driver required to make PA announcements?

A
  • Altered running
  • late running
  • service disruptions
  • ttransposals
  • start of services
  • if automatic announcements not working
61
Q

True or false: predept announcement must include destination and full stopping conditions of train?

62
Q

If there is a failure of automatic annoucments where does a driver need to make the announcements?

A
  • Junctions
  • Origin, destinations
63
Q

When is a driver required to do full cab unattended procedure?

A
  • Fault finding
  • Assisting special passengers at secondary doors
  • changing ends
64
Q

steps in modified cab unattended procedure?

A
  • PA if feel like its nessary
  • take keys (secure train)
  • Shut door
65
Q

Which cab do you start prep on?

A

The Motor cab you will be driving out from?

66
Q

If you find yellow flag (during prep) what do you do?

A
  • Place flag on ground or secondary flag holder
  • Find cleaner
  • Call fleet if cant find cleaner
67
Q

What is metro business risk mean?

A

When one or more sides/ sections or train cannot be prepped

68
Q

HCMT M/L prep time?

69
Q

What is on the docking sheet?

A
  • Location yard/siding
  • Siding number
  • Dock time
  • TD number
  • Motor car numbers
  • Post maintenance prep required
70
Q

HCMT pre movment/ revenue service time?

71
Q

Pre movement preps happen when?

A

When the train has already been in service that day.

72
Q

Does a docking sheet say if younneed to leave the train lit up during hot weather (+25c)?

73
Q

If you find a fault during a train prep, who do you contact?

A

book it contact TC, isolate/ rectify fault, but do not delay service/dock.

74
Q

Multi prep, who do you call?

A

DAO, leave

75
Q

WHo do you contact if there is a yelow flag on your train?

A

Fleet Control

76
Q

What are the reasons for P/M prep

A
  • Safety critical
  • Major repairs ex-collision
  • Full schedualed exam
77
Q

North Melbourne yard has sharded departing dwarf, what do driver need to do?

A

Confere with other drivers who will go out next.

78
Q

If driver has to detrain passenger, what steps are involved.

A
  • PA announcement
  • Auto announcement
  • Check CCTV
  • Then close saloon doors
79
Q

How does a driver know if they have to stable train?

A
  • SLip
  • Rosster
  • TC calls
80
Q

Time allowance to stable train?

81
Q

Do yu stable a train with an electrical fault?

A

No, leave the pantos up

83
Q

Should a driver attach to a train that is stabled?

A

No, the electrcal doors on the coupler will not open in time of connection and would cause damage to the pins.

84
Q

Regulating pressure?

A

380-550kpa

85
Q

Low pressure flag gives an audible and visual warning that

A
  • MR pressure is below 500kpa
  • EP brake is inoperative due to failure or isolation of powersupply to the lockout magnetic valve
  • Brake valve isolating cock and switch is closed
86
Q

What are we looking for when we stable a train?

A
  • Obvious defects
    Broken windows
    brake blocks turned
    busted air hose
87
Q

Trains can only be divided where?

A

Platforms and yard

88
Q

Raising Pantographs

The park brake ON valve will be energised and the remote park brake ON button will illuminate for how long?

89
Q

Time Notching

WHen master contoller is in SHUNTING, after how long will powere step up?

A

20 secs start, then every 5 secs until full series

90
Q

manual notching

Can you manual notch between PARALLEL and WEAK FIELDS?

90
Q

Can you manual notch between SHUNT and SERIES?

90
Q

Can you manual notch between SERIES and PARALLEL?

91
Q

Placing the reverser into OFF automatically applies the what?

A

Train Lined park Brake

Reverser in NEUTRAL will apply TLPBrake after 60 secs

92
Q

The Low Pressure FLag provides the driver with an audible and visual warning that?

A
  • MR pressure below 500kpa
  • Brake Valve Isolating cock and Switch is closed
    The EP brake is inoperative due to failure or isolation of thre power supply to the Lock Out Magnet Valve
93
Q

The TRIP Latching Lever uses compressed air from…?

A

Control Resivoir

94
Q

Stabling indicator light with marker lights turned to AUTO, how long will the stabling indicator lights flash?

A

15mins

Marker lights will be red at both ends

95
Q

Can a Schaffenberg couple to a Dellner?

A

Yes, but only mechanically

96
Q

The charging valve is closed in what position on the brake controller?

97
Q

Air Brake Test:
Returning the brake handle to minimum reduction on prep, what component is being tested?

A

Release Prevention Valve

98
Q

Positions for Air Brake Controller for Air Brake?

A
  • Run/Release
  • Sewrvice
  • Emergency

Not Step 1-7 (EP)

99
Q

Vicers: Time when needing to reset?

A

10secs. BP below 25kpa

Tom 231 (14 decks)

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