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Comeng Formative Gaps Flashcards

1
Q

What us introduced on the secondary circuit?

A

FPV
Control governor bypass button
Emergency pilot valve
Emergency control governor

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2
Q

What 4 things cause low pressure flag to rise

A

MR below 500
Lockout magnet valve deenergised
Loss of OH
BVIC

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3
Q

What 4 things does BVIC control flow of air to?

A

MR to air brake valves and BP
Electricity to:
- EP and Rheo switches
- LP flag and LOMV
- Door circuit

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4
Q

Purpose of auxiliary res (2)

A

Charged with BP pressure
Supplies brake cylinders with air

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5
Q

What limitation does westcode braking system have when using air brake

A

Depleted aux res after several applications resulting in reduced brake efficiency

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6
Q

What braking system has wheel slide protection during air braking

A

Knorr

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7
Q

Triple valve 3 main jobs

A

CHARGES aux res
APPLIES aux res air to brake cylinders
RELEASES brake cylinders to atmosphere

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8
Q

PEI time-out time

A

90 seconds

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9
Q

Anti neutralisation speed

A

8km

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10
Q

Release SPB knorr

A

1 turn

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11
Q

Release SPB wedtcode

A

6-8 turns

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12
Q

Apply SPB knorr

A

You cant

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13
Q

Westcode SPB apply

A

40-60 turns

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14
Q

Brake pipe continuity test pressures and timings

A

15 seconds - below 300
40 seconds - recoved to 425

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15
Q

FDCL causes

A

Second BVICS
Aux cb
Control cb
Rear marker lights
Door obstruction

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16
Q

Control gov open and close pressures

A

Open - 310 to 340
Close - 400 to 430

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17
Q

Trip test - what dies BP need to reduce to?

A

150

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18
Q

When air braking what valve provides a 10% increase to brake cylindars

A

Restricted application limiting valve and ball and check valve

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19
Q

What dies equalising res do

A

Allows BP to charge

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20
Q

What does control res do (2)

A

Supplies air to main equipment case for power and braking
Supplies air to trip latching lever

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21
Q

What does compressor governor do

A

Monitors MR

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22
Q

What’s the main component in aux equip case

A

MA

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23
Q

What does line breaker case do

A

Send 1500v to traction motors

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24
Q

What does main switch do

A

Stops 1500 to line breakers and traction motors

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25
4 extra reservoirs on a knorr
APES Aux res Pre control. EP res Supplementary res
26
Local fault light
Traction / rheo overload
27
Line switch fault light
Power to traction motors or line breaker faults
28
What CB is attached to the train lined spring park brake
Compressor Gov CB
29
6 van area cocks and what they do
30
What is attached to the PLC CB
SHUT DA FUCKING FUCKING DOOR DOOR DOOR DOOR CUNT Secondary PV Door loop bypass FPV FDCL relay Door delay closing relay Door open close buttons Door secondary release Door chimes Control gov bypass light and button
31
If PLC CB trips what indication will we have
FDCL
32
What does regulating valve do (2)
Works with relay valve to duplicate Eq res pressure in the brake pipe Maintains BP at 550 when EP braking
33
What is relay valve
Controls flow in and out of BP
34
What is charge valve
Allows MR to flow to relay valve
35
What is variable load valve
Works with air suspension, adjusts braking depending on load
36
What allows 10% extra brake cyls when air braking
Restricted application limiting valve and ball and chrck valve
37
What is restricted application magnet valve
Prevents air and ep working together
38
What prevents sticking brakes
Dump valve
39
What valve om brake unit is used to provide a passage through the triple valve when EP braking
Bypass check valve
40
Explains full cab
Secure train (apply and iso emy brakes) Secure cab (TD in portable, call TC, PA, lock everything up)
41
FDCL causes (8)
Door faults Control cb in rear Rear tail lights off PLC cb Coupler sensing still coupled Aux cb in rear Train cable open circuit (loss 110v) Second bvics
42
What's being tested on EP brake test
ABC wires 35kpa increment increases to b.cyls with step 1 and 2 being the same
43
What's being tested on air brake test (functionality)
-Simulate loss of OH when de-energising LOMV -When in brake zone, your reg, relay and eq res are working to reduce BP and increase b.cyl -EMY position tests exhaust valve and closing or charging valve -RR position tests closing of emy exhaust valve and charge valve open
44
HFPV and cont gov testing
Testing emy application valve Testing cont gov opens and closes
45
Trip test testing
BP exhausted through trip valve BP won't go below 0 as charging valve still open Ensuring trip only resets in emy
46
On a continuity test if BP doesn't charge to 425 in 40 seconds what could be cause
Blockage
47
What's being tested on panto test (3)
Short circuits in control cb LOMV deegergises Emy pressure in b.cyls
48
Detail the ROBBDS test
49
2 indications I have 110v
Bell LP flag down
50
5 causes of traction faults
Control res Air leaks Traction overloads 1500v failure CB fail
51
Isolating traction faults procedure
MC - off Controller key in motors switch hole Choose position Press OVERLOAD button Waiting for line switch to extinguish, but may stay illuminated. Continue to change switch positions to locate faulty motors if required.
52
What is om the control cb
MR BOPC Master controller Reverser Brake (rheo) Overload (traction reset) Panto raise and lower Control gov
53
What is on the aux cb
BADSCARS Bell Aux start Door control Saloon lights Couple uncouple Air con 1 Local rheo Schafenberg self centre
54
How to isolate panto (6)
Panto lower valve Inspect Iso panto ep cock Iso panto toggle switch Traction motors all out Tmm
55
1 MA fails indication (4)
1/2 saloon lighting 1/2 air-conditioning 1/2 cab lighting Local rheo innop (no cooling fan)
56
What is on MR system (10)
Doors Pantos MA Air suspension BP charge Comp gov EP Control res SPB Whistle
57
Loss of MR pressure steps (4)
Straight into emergency Check derailed Wait for MR to rise - if it doesn't go and find leak Attempt recharge BP as could be BP instead that's leaking If MR doesn't recover - find leak
58
MR tank rupture steps (3)
MR delivery cocks Compressor contractor switch OFF Comp gov CB
59
If you have MR pipe rupture what are your 3 goldern rules
DLBP Iso vicers Detrain passengers
60
MR pipe rupture in lead - 7 things to iso
Close end cocks Lower and iso pantos Isolate comp gov Trip EP (emy brake only) Manually release SPB Iso motors/rheo DLBP
61
MR ruptured in lead is CE needed?
Yes to charge BP
62
MR ruptured in lead what have you lost (5)
Doors whistle airbag MA control res
63
MR ruptured in lead speed
15
64
Mr ruptured in any other motor car, what's an additional thing that needs isolating
Yellow techav (iso trip)
65
Mr ruptured in any other motor car, what's an additional thing that needs isolating
Yellow techav (iso trip)
66
MR ruptured any other motor car speed
Max 30 (no airbags)
67
MR ruptured in trailer car - isolated equipment (3)
Trip EP Close end cocks DLBP
68
If BP doesn't recharge what do we reset and if that doesn't work what do we turn
vicers Red EC
69
How to locate to a BP leak
Isolate end cocks Check Local SPB in both centres Enter trailing centre Open BVICS Leave in S7 If BP does not charge its in that consist
70
3 goldern rules with BP pipe rupture
Drive from longest portion BP 15km Max speed If burst in LM or TM always a comp emp to apply SPB in case of brakeaway
71
BP leak in cars 1 2 3 isolate (3)
BP end cocks Release brakes via hand release wire Trip Ep from droving cab (longest portion BP)
72
BP leak 1 2 3 where is CE?
In lead to observe track and operate SPB
73
BP leak cars 4 or 5 isolate COMP EMP AVAILABLE (3)
Bo end cocks Hand release wire Trip EP
74
BP leak cars 4 or 5 where is driver where is comp emp?
Driver in lead Comp emp in rear charging BP, operating van cockif needed and using SPB in breakaway
75
BP leak car 4 or 5 extra 2 steps
Isolate MR to 7 step on leaky car Open bvic in trailing and place handle to r and r
76
BP leak car 6 isolate and where is comp emp
BP end cocks Hand release wire Trip EP CE in rear to apply SPB in case of breakaway.
77
BP fails to charge steps (charge valve issue) (6)
Mr to brake controller cock - close Trip EP Fan brake RR -> EMY (This will help free valve) Ensure SPB applied Open MR to BC cock RR
78
First thing ti check if BP fails to charge (charge valve issue)
Mr to brake controller cock
79
If freeing charging valve steps don't work what can we do next (5)
Set EP CB S7 leave BVIC open Ensure SPB Open second BVICS Apply and isolate
80
LOMV defect in closed position
No air Run on EP (15km speed detrain and shunt)
81
LOMV defect open positio
Super brake (all 3) Run on air
82
How to determine if regulating valve defect
Charge BP Close BVIC if BP drops - BP leak If BP does not fall - EMY - open bvics - release brake If BP only rises to previously low pressure then regulating valve issue
83
If brake controller moving to a more release position - what do we do (1)
Run on air
84
Sticking brakes rectification IN RUNNING (3)
Check pressures Ensure no charge valve air heard Trip EP -> full service back to RR
85
Sticking brakes WHILE STATIONARY (2)
Check Pressures Fan EP brake
86
Pressure - BP full service reduction
380-410
87
Number these
1 Restricted application magnet valve 2 dump valve 3 release ensuring valve 4 bypass check valve 5 triple valve 6 restricted application limiting and ball and check valve 7 hand release wire 8 variable load valve 9 7 step relay
88
Prior to manually applying SPB (westcode) What 2 things should you ensure
Van area park brake button ON OR SPB isolating cock turned
89
FDCL locating procedure (in running)
PA - stand clear of doors Stop at plat - door sequence If not rectified close doors FCA, TEC call, take stickers and PR Walk to Centre, listen for door chimes Press door open close again Get to trailing centre and look for - markers in auto - control CB - open BVICS - check door light If doesn't steady then locate door and isolate and add stickers
90
LSM needs to be off when (4)
Panto won't raise or stay raised MA won't start Panto lower for no reason EP CB keeps tripping
91
BP leak in car 4 or 5 no comp emp (6)
Iso end cocks Hand release wire Iso MR to 7 step Open BVIC on trailing M and handle to RR Power and brake from lead on EP BONUS - iso vicers
92
During divide - coupler doors not closing. How to move the train (3)
Lower pantos Close BP and MR end cocks Raise pantos and move
93
Divide - coupler doors not closing - how to close
Need 2 drivers Apply and isolate and park brake on MR and BP cocks open Press switch stick in BP sensor Second driver press uncouple buttons
94
How to turn off auto announcementd
Mode Disable audio

MT Trainee (53 decks)

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