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Class 233 > Comeng Traction > Flashcards

Comeng Traction Flashcards

1
Q

What circumstances will the LP flag raise?

A

-Main res pressure is below 500kpa
-EP brake is inoperative due to failure or isolation of power to lock out magnet valve
-The brake valve isolating cock and switch is closed

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2
Q

What are the “6 cocks in a box” ?

A

-Panto Ep isolate
-MA EP ISLOATE
-TRIP GEAR ISOLATE
-BP SENSOR ISOLATE
-PANTO & MA ISOLATE
-EP MR ISOLATE

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3
Q

What does the couple button do?

A

De energises the self centering device on the coupler. May be used when coupling 2 units together on a curved track

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4
Q

What air is used to lower the trip?

A

Control res

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5
Q

What does the compressor Contactor switch do?

A

Used to turn off or on the air compressor on the motor car the switch is located in

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6
Q

What does a steady air con light mean?
What does it mean when it’s flashing?

A

Steady means one air con has failed in atleast 1 carriage.
Flashing means 2 air cons have failed in the same carriage

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7
Q

What does the supply light mean?

A

When illuminated it indicates that 110 volt DC is operational on the train.
Atleast 1 MA must be operating to supply this light

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8
Q

How long does the emergency marker lights stay active?

A

The emergency marker light system has a 2 hour timer that will need to be reset to allow continued operation

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9
Q

What are the positions of the master controller?

A

Notch 0 is coast
Notch 1 is shunt
Notch 2 is series
Notch 3 is parallel
Notch 4 is weak fields

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10
Q

How long do you need to press the train lined park brakes button?

A

5 seconds

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11
Q

When would you place the LSM isolating switch to off?

A

-Pantographs will not raise
-Motor alternator will not start
-Pantographs lower for no reason
-EP circuit breaker trips continuously

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12
Q

What does the pantograph isolating switch do?

A

Isolates the pantograph on that car and prevents it from being raised or lowered from any car.

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13
Q

What does BVICS stand for?

A

Brake valve isolating cock and switch

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14
Q

What does the control circuit breaker control?
And is it train lined

A

It is train lined and protects the control circuit reverser, master controller, rheo brake, Panto raise and lower, traction overload reset and control governor.

If the rear motor car has a control circuit breaker tripped you will get a constant flashing blue door light

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15
Q

What does the auxiliary control circuit breaker protect?

A

Bell, auxiliary start, doors release and close, saloon lights, couple and uncouple, air con #1 control, local rheo,couple self centering.

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16
Q

How many volts are the headlights?

A

240v AC

17
Q

Where is the PLC circuits located?

A

Above door number 3

18
Q

What components are fitted to the P.L.C?

A

Door chimes
Door secondary release function
Door open and close buttons
Door delay closing relay
Door loop bypass controls
Foot pilot valve
Flashing door closed light relay
Control gov bypass flashing light/button
Secondary pilot valve

19
Q

After a loss of power or bivics being closed, how long until the TDN number needs to be re inserted ?

A

3 minutes

20
Q

How long does a PEI call last before timing out if not answered ?

A

90 seconds

21
Q

What microphone is used to answer a PEI call?

A

Microphone connected to DDU

22
Q

Do the headlights automatically turn on when the reverser is put into forward?

A

Yes, and they will not extinguish until the reverser is put into neutral or reverse and the headlights switch is off

23
Q

What air does the whistle use?

A

Main res

24
Q

How short must you stop short of another train prior to coupling ?

A

1 meter

25
Q

Below what pressure can you reset the trip ?

A

Below 25 kpa

26
Q

Can the Comeng be coupled to another emu?

A

Yes but no electrically

27
Q

What threes things could give you a flashing door blue light?

A

Tripped Auxiliary circuit
Tripped Control circuit breaker
A second bvics open

28
Q

What are the 3 zones in the brake controller while air braking?

A

Run and release
Service zone
Emergency

29
Q

How long will a PEI call stay active if not answered?

A

90 seconds

30
Q

Whhat speed does the Rheo brake operate?

A

5-115kmh

Class 233 (6 decks)

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