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Traction > Comeng > Flashcards

Comeng Flashcards

1
Q

How to reset the trip ?

A

Brake Controller into Emergency

OR

Press the Manual Reset button on top of the trip Valve

(Or you can operate the 3rd cock - 6 cocks in a box)

(B.P pressure must fall below 25 kPa for the trip valve to reset)

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2
Q

Dividing and attaching: Driver must:

A

-,STOP 1m short of stopping mark
- Make a PA (detrain)
- Secure cab (so its non operational)
- Ensure train lined Park Brakes applied (if applicable)
- Remain in the cab (to assist dividing driver)

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3
Q

What is the max speed when attaching trains?

A

2 - 4kms/ h

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4
Q

Can a driver perform a brake continuity test after attaching on their own? What must they do?

A

No

They must do a full prep

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5
Q

Can I attach to a stabled train?

A

No

Do not under any circumstances attach to a stabled train. We must light the other train up first (reactivate cab) and then attach

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6
Q

What are the sub-units of the VICERS system?

A

-Vigilance Control System
(110vDC Battery Back up)
- VM40 Event recorder
- Roof Mounted GPS

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7
Q

How long does VICERS light flash for when timing cycle has advanced ?

A

5 seconds

An audible buzzer will sound for a further 5 secs

Then the cycle will expire and EMY brake will be applied

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8
Q

Full cab unattended procedure for changing ends

A
  1. Pa? (Not for wheelchair pax)
  2. Raise trip
  3. Brake controller in EMY (this resets trip)
  4. Brake controller back to step 7 (BP charges to over 150 kPa)
  5. Brake controller back to EMY
  6. Close BVICS (isolate BP)
  7. BC back to Run & Release
  8. Plus ensure head lights and Marker lights are set to AUTO

Basically cut out and put marker lights to white /Auto

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9
Q

Full Cab Unattended procedure (not ch/ ends)

A
  • P.A ?
  • marker lights WHITE
  • reverser OFF
  • park brake ON (button RED & PB light on FAULT & status panel is illuminated)
  • Apply & Isolate :- (if we are returning to same cab):-
    . BC to EMY
    . Close BVICS
    . BC back to R&R

-headlights & marker lights to AUTO

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10
Q

Modified Cab Unattended procedure

A
  • Marker lights WHITE
  • reverser OFF
  • park Brake ON
    ( button RED & PB light on FAULT & status panel is illuminated)
  • BC step 7 (& remove keys)
  • headlights & Marker lights to AUTO (after returning to cab)
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11
Q

What does secured mean?

A
  • All cab doors & windows remain closed
  • Unauthorised access to cab is prevented
  • cab equipment is not operated
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12
Q

How do we cut in on a comeng?

A
  • open BVICS (BP to charge to 500 kPa)
  • lower Trip
  • BC handle to EMY (BP to 0 kPa to reset trip)
  • BC to R & R (to charge BP)
  • BC to step 7 (BP = 550, EP/ RS = 250)
  • insert portable
  • insert TDN into DDU
  • Inspect fault & status panel for fault indicators
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13
Q

Brake pipe operating pressure

A

550kPa

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14
Q

Brake pipe Full service reduction

A

Basically in full service not in EMY

380 - 410 kPa

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15
Q

Brake Cylinder pressure when Brake controller is in Emergency

A

275 kPa (brake Cylinders)

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16
Q

Main res operating pressure

A

585 - 725 kPa

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17
Q

Trip lower BP above

A

500 kPa

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18
Q

Control Res minimum pressure

A

490 kPa

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19
Q

Control Governor opens at

A

310 - 340 kPa

20
Q

Control Governor closes at

A

400 - 430 kPa

21
Q

Trip test BP must fall below

A

BP must fall below 150

22
Q

Continuity test BP must fall below

A

300 kPa

23
Q

In order to uncouple 3 things that are required (to use the uncouple button for it to work)

A

BVICS open
BP 0
Reverser in neutral

24
Q

What is the compressor gov connected to?

A

Compressor

25
Q

What is control res out connected to?

A

Line breaker case
Trip

26
Q

What will happen if you isolate the compressor gov iso cock?

A

Compressor will turn on because it reads zero air in main res

27
Q

What is the safety valve set at?

A

775 kPa

28
Q

What happens if you isolate control res out cock?

A

You cannot get power
No main res air will go to line breaker case

29
Q

How do we reset VICERS?

A

Speed 0
Put Master Controller to 0
Wait 10 seconds
Push VICERS button

30
Q

When will low press flag raise?

A

Main res is below 500 kPa
LOMV is de energized
BVICS closed

31
Q

What will happen if there is a fault with line breakers ?

A

Local light will illuminate (its equivalent to traction overload)

32
Q

Traction motor cut out switch - what happens when it is operated?

A

Local traction motors / Rheo brake will not operate and any fault lights will extinguish

They can be isolated completely (all out)
Or in pairs (1 & 2 OR 3 & 4)
In pairs - must use the controller key

33
Q

What happens when Control Circuit breaker trips (MRBOPC)

A

In lead car train will fail
In rear car FDCL will flash constantly

34
Q

Aux control circuit breaker controls BADSCARS If tripped when saloon doors are open?

A

Train will fail

35
Q

Emergency Marker lights have a 2 hour timer
How do we reset the system?

A

Turn marker light switch to any position and back to desired position in both leading and trailing cats

36
Q

When will SPB apply automatically?

A

When MR is below 500 kPa
60 seconds reverser in Neutral
Reverser off
60 seconds after MA is started (circuit energized)

37
Q

When does SPB release?

A

8km or above when reverser is not in OFF (linked to anti- neutralization device)

38
Q

What are the master controller and reverser connected to?

A

Control circuit breaker.

It supplies 110vDC
If it trips CANNOT CONTROL TRAIN from that cab.
Train is disabled

39
Q

What happens if we lose a PLC circ breaker?

A

FDCL flashes

40
Q

What activates the DDU?

A

BVICS

41
Q

What is the operational range of regulating valve?

A

380-410 kPa up to 550 kPa

42
Q

What will happen if Compressor Gov is tripped?
(2 ans)

A

train lined ON /OFF SPB buttons on THIS car will not operate

Compressor will continue to operate

The CG will not monitor MR air pressure on that car..

43
Q

What will happen if AUX CB is tripped?

A

Saloon doors and lights remains in currently state.
If doors are OPEN train will FAIL

44
Q

What will happen if MARKER lights CB is tripped?

A

SPB panel light will not indicate if SPB is applied
Local & panel lights wont operate

45
Q

Can you perform a running brake test in the Metrol controlled area?

A

No

Traction (32 decks)

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