Comeng Faults Flashcards
(183 cards)
1
Q
Why would you perform the ROBBDS test?
A
When the train fails to power
2
Q
What are the 2 stages of initial checks you do before starting the ROBBDS test?
A
- trips, switches, gauges, cocks
- 110vDC supply available
3
Q
What do you check for in the trips, switches, gauges and cocks stage?
A
- trip lowered and reset
- switches and mcbs in normal positions
- doors are closed (steady blue light)
- MR, BP and control governor gauges are in range
- BVICS open
- red EC and yellow TECHAV cocks in normal position
4
Q
What 3 things would you check to see if you have 110vDC available?
A
- 110 supply light is on and door close light/open light illuminated
- LP flag lowered and EP brake working
- bell operates
5
Q
What are the 6 stages of the ROBBDS test?
A
- reverser
- traction overload reset
- BP reduction
- control governor bypass
- door loop bypass
- second controller
6
Q
What are you check in step 1 (R) of the ROBBDS test?
A
- try to power with reverser in reverse
- if powers -> defective in forward position
- would need competent employee otherwise:
• disabled
• return to the rear
7
Q
What are you checking in step 2 (O) of the ROBBDS test?
A
Press traction overload reset button and try again for power
- no power -> onto next step
8
Q
What are you checking in stage 3 (B) of the ROBBDS test?
A
- BP reduction below 325kpa, recharge BP to >430kpa then try again for power (like control governor test in prep)
- fault may have been dirt caught between the contacts and this may clear it
- no power -> onto next step
9
Q
What are you checking in step 4 (B) of the ROBBDS test?
A
- control governor bypass button
- turn red EC cock, set foot pilot valve and press control governor bypass button (secondary circuit)
- if powers -> faulty control governor
- no power -> reinstate red EC cock and onto next step
10
Q
What are you checking in step 5 (D) of the ROBBDS test?
A
- door loop bypass
- isolate door loop bypass switch and try again for power -> passengers detrained
- if powers -> fault in traction inhibit system
- no power -> onto next step
11
Q
What are you checking in step 6 (S) of thr ROBBDS test?
A
- second master controller
- cut in and lower trip in another cab -> try again for power
- if powers -> C.E. required to clear section/return to rear with correct authority
- no power -> train disabled
12
Q
If you have completed the ROBBDS test and are still unable to gain traction power, what must you do?
A
Declare train disabled
13
Q
What 3 fault lights are connected to the traction system?
A
- local
- line switch
- this car
14
Q
What does the local fault light indicate?
A
Traction equipment fault has occurred (traction overload/protective device being tripped)
15
Q
What does the line switch fault light indicate?
A
- fault condition occurs on a motor car that prevents it from powering
- if line breakers are prevented from closing -> line switch remains illuminated at all times regardless of powering position
16
Q
What does the This Car fault light indicate?
A
Illuminates on the affected car where the defect is
17
Q
What are 5 things that could cause a traction fault?
A
- control reservoir faults
- pneumatic leaks
- traction overloads tripping
- 1500vDC failure
- circuit breaker failures
18
Q
What is the purpose of the control reservoir?
A
- supplies compressed air to operate equipment within the main equipment case and the line breakers case
- set the trip
19
Q
What position must the reverser be in before pressing the traction overload reset button?
A
Neutral
20
Q
What are the 4 positions of the traction cut out switch?
A
- all in (normal)
- 1 + 2 out
- 3 + 4 out
- all out
21
Q
How do you determine which motors are faulty using the traction cut out switch?
A
- isolate one bank at a time and try again for power
- if powers -> isolated bank was the faulty one
- no power -> other bank is the faulty one
22
Q
How do you find which trailing car has defective motors if it isn’t the lead motor?
A
- activate cab and set trip
- perform control governor test (from prep)
- no power -> isolate traction cut out switch
- if power -> try again in other motors until defective one is found
23
Q
If the main switch is found to be isolated and there is no TMM/traction isolated sticker, who must the driver call?
A
TC and report Main switch being isolated as per FMP
24
Q
Can a driver reinstate the main switch if it has been isolated?
A
No
25
What 5 things run off 1500vDC?
- pantos
- MAs
- compressors
- traction equipment
- associated circuits
26
How many times will the overhead system attempt to reset itself when there is a loss of overhead?
2
27
What is the purpose of the Loss of Overhead Shutdown Module (LSM switch)?
- detects a loss of voltage in 100vDC supply and shut-down systems on the train
- done to protect substation from overloading when power is returned
28
What will metrol request drivers to do if there is a loss of overhead power?
Lower all pantos
29
If power can be restored, what will metrol request the drivers to do?
Raise all pantos, one train at a time
30
Ar what intervals will metrol request trains to depart after overhead is restored?
1 minute
31
What notch must a driver depart in once advised to depart?
Series
32
If overhead is restored, but there are no communications, at what intervals must trains depart on the:
- up
- down
- up -> 30 seconds
- down -> 60 seconds
33
For how long will emergency lighting and the PA system last for after a loss of overhead?
2 hours
34
What light will flash to indicate the emergency lighting needs to be reset?
Battery charger
35
Which switch must be turned to reset the emergency lighting?
Marker lights -> go to another position then back to auto
36
What position must the LSM switch always be in?
On
37
What are the 2 components of the LSM?
- time delay relay
- speed threshold
38
What time limit is the time delay relay set to?
4 minutes
39
What is the speed threshold of the LSM module?
8km/h
40
What voltage must the 110vDC output drop to and for how long for LSM to take effect?
95vDC for 2 continuous seconds
41
What will happen to the pantographs and the motor alternators when:
- speed <8km/h within 4 mins (BVICS open/closed)
- speed 0km/h with timer exceeding 4mins
- speed >8km/h
- speed <8km/h:
• lead panto raised -> all others lowered
• local MA contactors closed -> all others opened
- speed 0km/h:
• all pantos lower
• all MA contactors open
- speed >8km/h:
• nothing until speed <8km/h
42
How long does the VICERS battery back up last?
5 mins
43
What will happen if the timer on the VICERS battery back up runs out?
- VICERS activation valve opens -> BP vents to atmosphere
- put brake handle into emergency to maintain MR pressure
44
How will metrol locate the train causing the overhead power to be lost?
- ask all trains one at a time to raise all pantos and start MAs
- when overhead power is lost -> that's the defective train
45
How will a driver be able to determine which motor car is causing the overhead power to be lost?
- raise each panto individually
- start each MA locally
- when overhead power is lost -> that's the defective motor car
46
How will a driver isolate the defective equipmemt once the motor car has been found?
- lower local panto using EP valve
- isolate panto electrically and pneumatically
- motor cut out switch to all out
47
What button can a driver press to try to reset a traction overload?
Traction equipment reset button
48
What does a local fault light indicate?
An overload has tripped on a motor car
49
What does a line switch fault light indicate?
Line breaker has failed to close on a motor car
50
What does a motor alternator fault light indicate?
An MA is not running or is not providing electrical output on a motor car
51
What does a rheostatic brake fault light indicate?
A rheo brake has failed to set up correctly on a motor car
52
What does an air conditioner fault light indicate?
- steady -> no more then one air con failed on any one car
- flashing -> both air con failed on one or more cars
53
What does a wheel slip indicator fault light indicate?
- stationary -> fault in wheel slip unit and its associated equipment
- in motion -> indicates difference of >15km/h between axles while powering or braking caused by slippery conditions or defective wheel slip unit
54
What does a park brake fault light indicate?
One or more SPB applied on the train
55
What does a foot pilot valve indicator light indicate?
If the foot pilot valve is set
56
What does the this car fault light indicate?
Location of a fault in conjunction with other fault lights being illuminated
57
What 6 pieces of equipment makes up the control circuit? (MRBOPC)
- master controller
- reverser
- brake demand (rheo)
- overload reset button
- panto raise/lower buttons
- control governor (speedo)
58
What happens if the control mcb trips in the lead motor?
- train will fail
- master controller inoperative and no train lined signals can be sent to the traction equipment
59
What will a driver have to do if the control mcb trips when pressing remote PANTO RAISE button?
- fault between master controller and mcb if mcb can't be reset
- raise pantos manually at each motor car
- TMM
- prevention -> don't use panto raise button to remotely raise pantos
60
What will a driver have to do if the control mcb trips when pressing remote PANTO LOWER button?
- fault between master controller and mcb if mcb can't be reset
- reset mcb
- electrically isolate panto EP valve with switch
- press remote panto lower again
- if remains set -> fault in EP valve, manually lower and isolate panto and TMM
- if trips again -> repeat above procedure on each motor car until defective EP valve is located
- can't enter service if pantos can't be remotely lowered from lead cab
61
What will a driver have to do if the control mcb trips when pressing traction equipment reset button?
- if mcb can't be reset fault is between master controller and mcb
- identify defective motor with 'this car' fault light
- isolate traction equipment -> motors to all out
- TMM and advise TC
62
What will a driver have to do if the control mcb trips when master controller off, reverser off, brake handle in release?
- short circuit between control mcb and master controller
- can't power from leading cab/master controller, driver can:
• C.E. power train from another master controller
• assisting train assist clear of main line
63
What will a driver have to do if the control mcb trips when master controller off, reverser FOR/NEU/REV, brake handle in applied position?
- causes:
• short circuit between control mcb and master controller
• short circuit on electric brake demand wire in train cable
• fault in rheo brake control equipment on any motor car in train
- isolate local rheo and attempt to reset control mcb
- if mcb doesn't reset:
• reinstate rheo
• trip EP mcb and remove electric brake demand from whole train
• reset control mcb -> if remains set run on air brake and TMM to TC
- if control mcb trips again -> short circuit between control mcb and master controller:
• C.E. power train from another master controller
• assisting train assist clear of mainline
64
What will a driver have to do if control mcb trips when master controller open/powering?
- establish if mcb trips in all powering notches or certain notches
- of trips immediately when master controller operated -> train can't be powered
- probable cause -> short circuit somewhere in train cable or traction control equipment on any motor car
- to rectify:
• motors to all out on lead motor
• reset control mcb and try again for power
• if rectified, operate from lead motor using remaining motor cars
- if mcb trips again, reinstate motors and repeat in other motor cars until defective motor car is found and leave these motors cut out:
• fault was within traction equipment of that car
- if mcb still trips -> reset mcb
65
What will a driver have to do if the control mcb is still tripping after checking all motors to find which is causing the trip?
- reset mcb and switch motors to all in
- divide train
- test for power in lead portion to ensure mcb remains set
- traction power obtained, attach train non-electrically
- in trailing unit:
• PA announcement
• locally release SPB on motor cars of trailing unit
- cut in lead cab, trip EP mcb and isolate door loop bypass, detrain passengers
- if train can't be divided -> disabled and assisting train required
66
What will you observe if control mcb trips when:
- pressing remote panto up button
- pressing remote panto down button
- pressing overload reset
- using master controller
- using rheostatic brake
- pan up -> pantos can't be remotely raised
- pan down -> pantos can't be remotely lowered
- overload -> overloads can't be reset
- m.c. -> can't supply traction power in one or all powering positions
- rheo brake -> failure of rheo brake
67
What 8 things are linked to the auxiliary mcb? (BADSCANS)
- bell
- auxiliary start button
- door control buttons
- saloon light on/off buttons
- couple/uncouple buttons
- anti-neutralisation device
- no. 1 end air con
- self centring on coupler
68
What does the compressor synchronisation mcb do when tripped?
Associated compressor governor won't be synced with other comp. gov. but will still operate independently
69
What does the comp gov mcb do when tripped?
Comp gov on that motor car won't be energised
70
How do you isolate a pantograph?
- push panto lower EP valve
- isolate panto EP cock in cabinet
- isolate panto electrical toggle switch
- motor switch to all out
- TMM to TC
71
What will happen if 1 MA fails on a 3 car unit?
- half saloon lighting in each car
- half air con in each car
- half cab lighting and heating
- local rheo brake where MA failed will be inoperative
72
How can a driver reset a MA on a:
- knorr
- westcode
- knorr -> overspeed trip located on the side; small protruding lug, push to reset
- westcode -> hi5 overspeed reset/trip button
-> use switch stick
73
Is it of high importance to reset a MA?
- no, only need 1 MA on a unit for train to operate sufficiently
- inspect in a siding environment
74
What will happen when the following MAs overspeed:
- knorr
- westcode
- knorr -> continue to run but won't output any power to train
- westcode -> will stop running
75
How many DC supply mcbs need to be set for the train to remain operational?
1
76
What will happen if all DC supply mcbs trip and none can be reset?
Train is disabled
77
What are the highest high and highest low settings for the compressor governor?
- high -> approx. 725kpa
- low -> approx. 585 kpa
78
What happens when the MR pressure reaches the:
- highest high
- highest low
- high -> compressors stops running
- low -> compressors start running
79
What happens to the compressor when the compressor governor isolating cock is isolated?
Run continuously
80
What is the minimum BP pressure that needs to be maintained for the train to remain in service?
425kpa
81
How do you identify which compressor governor highest low setting is too low resulting in the MR falling below operating range?
- trip each individual comp gov mcb one at a time until the compressors start running
- the one that is tripped when they start running again is the defective one
82
What will happen if the comp gov contactors are stuck in the CLOSED position?
- compressors will run continuously
- safety valve will be blowing and MR will be >775kpa
83
How do you isolate a decective compressor governor/compressor running continuously?
- electrically cut out each comp gov in turn until the compressors stop operating
84
What button won't be able to be used if COMP GOV mcb is tripped?
Train line park brake on/off buttons
85
Are the compressors designed to run continuously?
Yes
86
What happens if the COMP SYNC mcb is tripped?
- that compressor will operate only off its own local comp gov on its own car
87
What 10 things run off MR pressure? (DPCWEBCAMS)
- doors system
- pantos
- comp gov
- whistle
- EP braking system
- BP charging
- control res system (traction)
- air suspension system
- MA contactors
- SPB system
88
What must a driver do if they observe both MR and BP pressures falling?
- brake handle to emergency
- check if derailed/divided
- observe if MR starts recharging
- if MR is recharging -> potential trip activation
89
How do you identify where an MR leak is?
- RTA, full cab unattended
- walk around train and inspect for the ruptured equipment
- attempt to isolate defective equipment or plug rupture if possible
90
How do you stop an MR leak if it is caused by a ruptured main reservoir tank?
- close MR delivery isolating cocks
- comp contactor switch to off
- trip comp gov mcb
91
What must a driver do if a MR flexible hose between cars bursts?
- close MR end cocks on both sides of affected hose
- TMM to TC
92
What 3 things may indicate to a driver defective air suspension?
- complaint from passengers
- rough riding
- level indicators indicating an abnormal indication
93
What is the maximum speed when there is deflated air suspension?
Half track speed to a max of 30km/h
94
What must a driver do when there is a leak/broken pipe between MR to control reservoir?
- isolate control res IN cock
- motors to all out in affected car
95
What must a driver do when the control reservoir is ruptured?
- isolate control res IN cock
- motors to all out in affected car
96
What must a driver do when there is a leak/broken pipe between control reservoir to line breaker case?
- isolate control res OUT cock
- motors to all out on affected motor
97
What must a driver do when there is a control res air leaking from trip latching lever?
- isolate trip gear
- secure trip in raised position
- isolate yellow TECHAV cock if in trailing car -> prevent back tripping
98
How do you rectify a whistle defect?
- operate whistle lever rapidly
- inspect whistle isolating cock and open and close it rapidly
- if not rectified, isolate whistle and drive as per rules
99
At what speed must you be moving to identify a rheo brake fault?
>5km/h
100
How many amps should the rheo brake be drawing?
100-250 amps
101
Can you isolate only the rheo brake train lined, or on a car by car basis?
Car by car
102
What effect does tripping the EP mcb have for braking?
Isolates EP and rheo throughout whole train
103
What happens if there is a defective train cable and the defect is in the cable behind the first motor car?
- only lead car will have EP braking
- no other cars will EP brake
104
What must a driver do if there is a defective train cable?
- isolate EP brake
- use auto air brake
105
What will a driver do if there is a defective brake controller or code conversion unit?
- isolate EP brake
- use auto air brake
106
What will happen if there is a second BVICS open?
- FDCL
- air brake can fail if it's in use -> charging valve will recharge BP from second BVICS during a brake application
107
What brake is always available?
Auto air brake
108
What is the only position of the brake controller that works when the BVICS is closed?
Emergency
109
What will happen if the brake availability falls below 50%?
Train must be declared disabled -> don't move and secure with park brakes
110
What happens if the air brake becomes inoperative on a leading/trailing car with no competent employee available?
Train must be considered disabled
111
What must a driver do if the air brake releases while in an applied position?
- ensure MR and BP are at sufficient pressures
- no sound from the charging valve
- bring train to a stand:
• reinstate EP brake
• several applications between step 7 and release rapidly
- trip EP mcb:
• full service air brake application
• brake handle to run and release to recharge BP
• another full service brake application
• run and release to recharge BP
- perform a brake controller test
- TMM to TC
112
How do you identify a brake defect whilst inspecting the brake rigging?
- use tri key
- must be able to fit between the frame and live action lever
113
What must a driver do if they observe BP and MR pressure falling?
- brake handle to emergency
- attempt to reset any activated trip
114
What are the 3 main causes of a loss of BP pressure in the lead cab?
- operation of safety equipment (trip, hand/foot pilot valve)
- involuntary action of equipment (back tripping)
- failure of equipment (ruptured BP)
115
What is the first thing a driver should obersve when they see a loss of BP in the lead cab?
Mirrors to see if derailed or divided
116
If the BP doesn't recharge, what 2 things should a driver next check?
- pilot valve is set
- reset VICERS system
117
If BP still doesn't recharge, what will a driver next check?
- isolate red EC cock
- operate secondary circuit
- observe BP pressure increasing
118
How would a driver determine if the loss of BP is caused by back tripping?
Brake handle to emergency then try to reset trip and recharge BP
119
How do you reset the VICERS system?
- train stationary
- master controller to coast
- brake handle to emergency
- wait 10 seconds
- press VICERS acknowledge button
- brake handle to run and release to charge BP
120
How would you locate where the BP leak is?
- full cab unattended
- proceed to trailing centre motor and ensure SPB is locally applied
- isolate BP end cock on no. 1 end of trailing centre motor
- enter leading centre motor and ensure SPB is locally applied
- open BVICS
- if BP charges -> fault on rear 3 cars
- if BP doesn't charge -> fault on lead 3 cars
121
What is the maximum speed when there is a BP leak that has been isolated?
15 km/h
122
Which are the only cars where a competent employee isn't required when there is a BP leak?
Cars 4 and 5
123
What must a driver do if the BP leak is caused by a pipe/equipment failure between the brake pipe to triple valve isolating cock on the brake unit?
- release brakes on affected car using hand release wire
- isolate MR to 7 step relay cock -> prevents EP from operating on that car
124
What are the steps for identifying a charging valve defect where the BP doesn't charge?
- BP can't charge and no air will be heard passing through the brake controller
- check the MR to brake controller is open:
• if closed -> open it
• if open, close
▪︎ trip EP mcb
▪︎ work brake controller between release and emergency several times
- open MR to brake controller cock and brake controller to release
- if unable to charge BP:
• ensure EP mcb is set
• brake controller to step 7
• BVICS open
• SPB applied
• open BVICS in second motor (back feed through charging valve)
- once BP is fully charged, close second BVICS and see if BP is recharging from lead motor
125
If unable to free a jammed charging valve, what must be done to move the train?
- C.E. to open BVICS on trailing motor car
- close BVICS once fully charged
126
What will happen if the lock out magnet valve is defective in the:
- closed position
- open position
- closed -> no auto air brake
- open -> simultaneous air brake and EP/rheo brake (super brake)
127
What speed restriction would you be doing if the lock out magnet valve is defective in the closed position?
Max 15km/h -> operate on EP brake
128
Is there a restriction to train speed if the lock out magnet valve is defective in the open position?
No
129
What will happen if there is a defective emergency application valve?
- emergency brake application occurs
- control gov opens and won't close
- no control voltage to master controller
- BP can't be recharged
- auto air brake can't be released
- train won't power
130
What must a driver do if there is a defective emergency application valve?
- turn red EC cock
- introduce secondary circuit
- if emergency application valve doesn't set and BP won't charge, driver must declare train disabled
131
If release prevention valve is stuck in the open position, what must a driver do?
- be careful and ensure brake handle remains in selected service position and not allow brake controller handle to move back towards release position
- advisable to operate train using EP/rheo brakes
132
What brake should the train be operated on if there is a defective release prevention valve?
EP/rheo
133
How do you identify a defective regulating valve?
- charge BP, close BVICS and observe BP gauge -> if BP falls, BP leak is cause
- if BP doesn't fall:
• emergency brake, open BVICS, release brake
• if BP only charges to previously low level -> defective regulating valve
134
If BP pressure is between 425-550kpa, can you continue in service?
Yes
135
What brake must you operate on?
EP/rheo
136
What must happen if BP pressure falls <425kpa?
Train declared disabled and arrangements for assistance to be made
137
How would you move the train out of the section if BP <425kpa?
- C.E. to open second BVICS and charge BP
- close BVICS once BP is charged
138
What will happen if the brake handle moves to the more applied position?
- TMM and continue as normal
- control movement of handle to prevent an excessive brake application
139
What will happen if the brake handle moves to the more released position?
Train brakes will release
140
What brake shouls you run on if the brake handle moves to the more released position and why?
- air brake
- release prevention valve -> brakes won't release unless in run and release
141
What 3 things should you check if the SPB is failing to release?
- MR pressure sufficient
- comp gov mcb is set
- ensure reverser in for/neu/rev
142
What must you do if the SPB light is still illuminated after checking the above 3 things?
- release locsl SPB using van area button
- check it releases
- reapply SPB locally
- individually release SPB in each trailing cab
- cut in lead motor -> brakes to step 7 and release local SPB
- drive train to first platform and detrain passengers
- shunt out to first available siding
143
How can you apply the SPB if the comp gov mcb is tripped and unable to reset?
Reverser to off
144
How can you apply the SPB if the comp gov mcb is tripped and can be reset?
- set comp gov mcb
- press train lined SPB off button
- trip comp gov mcb
145
What must a driver do if the SPB doesn't apply after pressing the train lined SPB on button?
- apply local SPB
- EP brake into step 7
- reverser to forward
- confirm local SPB will release by pushing train lined SPB off button
146
What 4 ways can sticking brakes be detected?
- retardation of train
- smoke and odour
- observation of BC gauges
- illuminated fault lights
147
What component of the brake unit could cause sticking brakes?
Defective dump valve
148
What is the purpose of the dump valve?
- ensures that after an emergency/auto air brake application, there is sufficient pressure reduction in the auxiliary reservoirs
- this allows rhe trippe valves to move to release position and brakes to be released
149
After a full service air brake/emergency brake application, what pressure will the dump valve reduce the auxiliary reservoir to on:
- knorr
- westcode
- knorr -> 415kpa
- westcode -> 425kpa
150
How do you rectify sticking brakes in running?
Trip EP mcb
- full service brake application then release
- check for smoke/retardation to clear
- if rectified -> continue
- if not rectified -> stop train at a suitable location for fault finding
151
How do you rectify sticking brakes when stationary?
- relevant air pressures are correct
- rapid succession of EP brake from release to step 7 and back to release
- minimum power to move train
- shut off and feel for retardation
- train rolls freely -> continue
- train still retarding -> stop again at suitable location
- RTA, full cab unattended -> inspect brakes for signs of excessive heat/smoke
- determine if it is SPB or entire bogie
- isolate affected bogie and confirm all brakes have released on affected bogie
- if still venting/BC not releasing -> isolate and manually release SPB
- FMP -> TMM and FWN and sticker
152
What is the maximum number of bogies that can be isolated to remain in revenue service?
- 1 bogie on a 3 car
- 2 bogies and a 6 car
153
Can a train with sticking brakes enter the city loop?
No, unless the affected equipment has been rectified/isolated
154
What indications would you get for sticking wheels on:
- motor car
- trailer car
- motor:
• wheel slip light
• line switch and local fault lights appearing/disappearing when powering
• this car light on affected motor
- trailer:
• wheel slip fault light
155
What 2 ways could you try to detect if you have skidding wheels?
- mark the suspected wheel, move train forward and check for rotation
- draw train forward while C.E. visually confirms wheel rotates
156
What 4 things could cause a locked/jammed wheel?
- seizure of a traction motor
- brake rigging/head failures
- axle box failures
- any other potential mechanical fault
157
What is your maximum speed when skidding wheels to clear the section?
5km/h
158
Can you move the train if the lead axle is jammed?
No
159
For trains following the one with skidding wheels, what is your speed restriction if:
- infrastructure personnel present
- no infrastructure personnel
- I.P. -> reduced speed
- no I.P. -> 15km/h
160
What must a driver do if the brake block is worn down to:
- within 25mm area
- within 10mm area
- backing plate in contact with wheel
- 25mm -> no action required
- 10mm -> report as worn, still serviceable
- touching plate -> unserviceable, bogie must be isolated
161
Is vertical cracking in the brake block acceptable?
Yes
162
What must a driver do if the service area of the brake block broken off is:
- <50%
- >50% on one bogie
- >50% on more than one bogie
- <50% -> submit TMM, maintenance fault
- >50% 1 bogie -> isolate bogie and TMM, serious end run fault
- >50% >1 bogie -> isolate bogies and TMM, critical fault
163
When isolating a bogie, does the associated park brake have to be isolated on that bogie as well?
Only if the brake block doesn't clear the wheel
164
What 3 things could be the cause of a saloon door defect?
- mechanical
- electrical
- pneumatic
165
What 8 things could cause a FDCL? (POSTCARD)
- PLC tripped cars 2-6
- open BVICS in another car
- sensor (coupler)
- train cable
- control mcb tripped
- auxiliary mcb tripped
- rear motor lights in wrong position
- door failing to close
166
If a FDCL can't be rectified, what must the driver do?
- isolate door loop bypass
- detrain passengers and operate train into a siding
- TMM to TC
167
Can a driver return the door loop bypass key switch to normal after isolating it?
No
168
What light will illuminate when the door loop bypass has been isolated?
Safety system isolation
169
What is the most likely defect if:
- 1 door is defective
- 1 side of doors on a car is defective
- all doors on a card are defective
- all doors on a train are defective
- doors fail to open
- 1 door -> mechanical
- 1 side of doors -> electrical or pneumatic
- all doors on a car -> pneumatic or electrical
- all doors on a train -> auxiliary mcb
- doors fail to open -> pneumatic pressure
170
How many doors can be isolated to remain in service?
1 per side per car
171
How many MAs need to run for full saloon lighting in a 3 car unit?
2
172
What 4 times is some form of internal lighting required when in service?
- operating within city loop
- at FSS
- at SSS
- in the hours of darkness
173
What 4 steps must a driver do if whole train lighting is inoperative?
- observe at least 1 panto in raised position and in contact with wire
- check 110vDC supply light is illuminated
- trip and reset aux mcb
- prese saloon light ON button 3 times then press and hold for 5 seconds
174
How much lighting will be available in a 3 car unit if one MA is not running?
Half saloon lighting
175
What should a driver do if the lighting contactors area inoperative, resulting in half saloon lighting?
- press and hold saloon light on button 3 times then for 5 seconds
- inspect saloon lighting mcb above door 3
176
What would be the cause if the lighting is extinguished in:
- a regular sequence
- no discernible pattern
- regular -> mcb and switches
- random -> inoperative tube
177
What are the restrictions if there is no saloon and/or emergency lighting in one or more cars?
Must not pperate in service:
- during the hours of darkness
- through the MURL
178
Is there any operating restriction if the train has only emergency lighting?
No
179
For how long does emergency lighting last?
2 hours
180
How do you reset the timer for the emergency lighting?
Turn marker light switch to another position then back to auto
181
During train rescue, if the disabled train has all the pantos lowered, what isolating cock must be turned?
Yellow TECHAV on each cab of disabled train
182
How do you perform continuity when coupling up with another comeng?
- charge the BP from disabled train
- brake handle to emergency from disabled train
- brake handle to run and release in disabled train to recharge BP
- reapply brake once continuity is complete
183
What brake would you be running on if coupled up non-electrically with another comeng?
Auto air brake
