X'trap Faults Flashcards
How long will the batteries last when there is a loss of overhead?
60 minutes
What 6 steps can a driver take to conserve battery power after a loss of overhead?
- reverser to neutral
- master controller key to off
- headlights off
- cab lighting off
- saloon lighting to emergency (if daytime)
- close cab doors (step lights turn off)
What 3 fault lights indicate a mcb has tripped?
- major
- major 2nd level
- minor
At what pressure will the low pressure in MRP fault light come on?
<650kpa
At what pressure will the low pressure in BP fault light come on?
430kpa
How many tacho speed sensor cables need to be working on a 6 car set for the linked equipment to operate?
1
At what BP pressure will:
- safety loop open
- traction power cut
- safety loop close
- 300kpa
- 430kpa
- 480kpa
What 3 locations can mcbs be found?
- b side cabinet in drivers cab
- trailer saloon, left of door 2
- E box on each car -> driver can’t access
What 6 mcbs are located in the saloon area of a trailer car?
- tachy
- BCU
- panto 2
- panto 1
- aux inverter 2
- aux inverter 1
Can a driver access/reset mcbs in the E box?
No
How many times can you reset a fault?
3
Who must you call before trying to stable on the mainline for fault rectification?
TC
Where are the fault lights located on an X’trap?
Drivers cab to the right of the driver’s console
May the TC get you off the mainline to perform the train stable?
Yes
What 3 conditions should be met when stabling a train for fault rectification?
- at a station platform
- protected by home signals
- not activating level crossing equipment
For how long should you stable for fault rectification?
2 mins
What will happen when the X’trap is stabled?
- red marker lights and emergency lights stay on for 15 minutes
- saloon doors remain locked
What must a driver do if the train is still disabled after stabling?
Declare train disabled
Can a driver reinstate batteries that have been isolated?
No
If a panto fails to raise/high voltage light doesn’t come on after 30 seconds, what must the driver check?
Voltmeter on unit affected
If there is no voltage on the voltmeter, what should the driver check?
Battery box isolationf switch:
- if isolated -> report to TC
- if not isolated -> declare train disabled
If voltage is <90 volts, what should a driver do?
Declare train disabled
If voltage is >90 volts, what should a driver do?
- check local and trailing panto buttons aren’t latched in
- attempt to raise pantos from another cab
- if they fail to raise -> inspect panto 3 way switch is in auto position
- check panto 1 and 2 mcbs are set in trailer car
- TMM to TC
What are the 3 positions of the panto manual control and isolation switch?
- auto
- manual raising
- manual lowering and isolate
What should a driver do if the pantos fail to raise electrically?
- leave panto lowered
- book as per FMP
What is the procedure for isolating a pantograph?
- stable train and observe panto has lowered
- place 3 way switch to manual lowering and isolate
- if failed to lower -> manually lower with crank handle
- activate leading cab to raise other panto
- TMM to TC
How do you manually lower a pantograph?
- 3 way switch to manual lowering and isolate
- attach crank handle and wind anti clockwise until tension is felt
- confirm panto is lowered
- TMM to TC
What position does the EMS switch need to be in when coasting under an overhead obstruction?
1 - online holding brake inhibit
What is the procedure for coasting under an obstruction?
- panto test -> must lower within 10 seconds
- master control to full service, EMS switch to position 1
- apply enough traction power to coast clear of obstruction
- lower pantos when going fast enough and prior to obstruction
- bring train to a stand once clear of obstruction
- EMS back to position 2
- raise pantos if clear of obstruction
What will happen if 2 cabs are active at the same time?
Safety loop opens and emergency brakes apply
How do you identify where the other active cab is?
- cab to cab to locate another driver
- inspect each cab for key in reverser/cleaner’s key active
- no key found -> activate each cab to find the active one then deactivate it
If you can’t deactivate the other active cab, what do you do?
Train stable
If a train stable doesn’t rectify the other active cab, how would you opreate the train?
Competent employee available:
- driver powers and brakes from other cab
- C.E. in lead motor to operate the ESB
- TMM to TC
- max 15km/h
No C.E. available:
- train disabled
What equipment must be checked if the emergency brake has applied and is not releasing?
- 100v (cab fluoros)
- trip lowered and reset
- master controller not in emergency
- hand/foot pilot valve set
- VICERS activation
- EMS in position 2 (could be low BP if in position 3-5)
- MR >580kpa
- another cab operative light (lamps test to ensure not faulty)
- 23Q1 and 23Q2 mcbs are set
- ESB pressed
- all trips raised
What must you do if the safety loop fails to release after coupling 2 x 3 car trains?
Uncouple the units -> may be fault in the coupler
What bypass switch must be operated if the safety loop can’t be released?
Safety loop bypass switch
What safety equipment is lost when the bypass switch is operated?
- emergency position of master controller
- ESB
- hand and foot pilot valves
- auto vigilance bypass buttons
- trip
- BP pressure switch (during train rescue)
- MR pressure switch
What bypass switch is used if the hand/foot pilot valve is defective?
Auto vigilance bypass switch
What else must you do if you operate the safety loop or auto vigilance bypass switches?
Isolate VICERS
After how long will the auto vigilance bypass button flash?
30 seconds
How long do you have to press the auto vigilance bypass button after it starts flashing before emergency brakes will apply?
10 seconds
What 4 instances can the VICERS system be isolated?
- fault indicator light illuminates and remains illuminated
- safety loop is bypassed
- auto vigilance is bypassed
- abnormal operation of VICERS
How many cars is battery charging confined to?
Individual 3 car units
For how long will batteries supply power for?
Up to 1 hour
How do you rectify a battery charger fault?
Train stable:
- light extinguishes -> continue
- remains illuminated -> remove from service asap and stable
What lighting is available if the battery charger fails?
Emergency lighting
What power do the SIVs run on and supply?
- run on 1500vDC
- supply 400vAC
For how long will the battery charger fault light illuminate while the circuits change over?
Up to 2 mins
What will happen if 1 SIV on a 3 car unit becomes defective?
- half air con
- 1 air compressor operating
What equipment will be lost if both SIVs fail on a 3 car unit?
BATHG:
- battery charger
- air compressors
- traction cooling fans
- HVACs
- GPO
How do you rectify SIV faults?
- if aux mcb has tripped -> reset
- train stable
Where are the saloon door motor isolation switches located?
- Left of each door
- door 1 of motor cars is in drivers cab
What are the 4 positions of the door motor isolation switch?
- motor release
- motor isolate
- normal
- motor lock close
What position of the door motor isolation switch is not normally used by drivers?
Motor isolate
What 4 indications will the driver see in their cab if a DER has been activated?
- FDCL
- DER handle activated status light illuminated
- flashing red ANSW acknowledge button
- DDU emits beep sound
How do you rectify a DER that has been activated?
- use DDU to find where DER was activated
- full cab unattended
- turn tri-key anti clockwise to reset DER
- report broken DER seal to TC
What is the procedure for isolating a defective saloon door?
- locate door
- open overhead cabinet to left of door
- motor isolation switch to motor release position
- manually close door
- motor isolation switch to motor lock close position
- apply door not in use stickers
- TMM to TC
Can the X’trap automatically isolate traction faults?
Yes
What 4 indications may a driver receive if there is a traction fault?
- traction fault light on affected motor car
- 1 or more traction eq. fault light train lined
- no green LEDs on power indicator when trying for power
- possible shuddering while train is in motion
How would you rectify a traction fault?
Stable
How would you locate the traction fault?
- activate each cab one by one
- locate motor with the traction fault lights and 1 or more traction eq. fault light
- traction isolate switch to isolate (extinguishes the train lined fault light so you can see if another fault occurs)
- TMM to TC
What does turning the traction isolate switch do?
- extinguishes 1 or more traction eq. fault light on each motor car
- allows you to see if another fault comes up
How would you determine if 1 or more tachos have failed?
- speedo works
- door release operates
What equipment will be lost if all tacho speed sensor cables/tachos have failed on both units?
- door release buttons -> can’t release saloon doors
- uncouple button won’t work
- trip can’t be reset after it’s activated
- no speedo
- can’t recharge BP afer going into emergency during train rescue
- VICERS can’t be reset
How do you rectify a tacho speed input failure?
Train stable
If stabling doesn’t rectify a tacho speed input failure, what bypass switch must be operated?
Tacho bypass switch
What equipment is connected with the 24 v inverter?
- headlights - low beam
- drivers seat adjustment
- marker lights
- speedo
- windscreen wiper/washer
- voltmeter
- MAD button
- cab spotlight
- CCTV cameras
- external brake indicator lights
If the DTRS fails, what could a driver use instead?
Portable radio
How can a driver clear any fault messages on the DTRS?
Press X on the keypad -> will have to press for each fault
What is the procedure to reset the DTRS?
- deactivate cab
- trip and reset DTRS mcb in cab
- activate cab
- DTRS will do start up sequence, enter TDN when prompted
- perform radio test
- TMM to TC
What is the procedure to isolate the DTRS?
- insert portable into cradle
- deactivate cab
- trip DTRS mcb in cab
- reactivate cab
- portable is now primary radio -> cradle is unpowered
- TMM to TC
What must a driver do if the auto announcements aren’t working?
- use the PA system
- make announcements at:
• junction stations
• express running
• terminal stations
If the standalone PA isn’t working, what can a driver use instead?
PA on DTRS
What must a driver do if both PA systems are defective?
- stable train for 2 mins
- restart train and wait another 4 mins
- re-test PA
If both PA systems are still inoperative after stabling, what must a driver do?
- train must be taken out of service
How many compressors are on a 3 car unit?
2
At what MR pressure will both compressors run?
<650kpa
If a rupture occurs between the MR and the compressor governor, how would you stop the leak?
Turn compressor governor isolating cock to isolate
What effect will isolating the compressor governor have on the compressors?
They will remain in whatever state they were in
At what pressure will the low MR pressure fault light illuminate?
<650kpa
At what MR pressure will the safety loop open?
<580kpa
What should a driver do if MR pressure is between 580-750kpa?
- monitor MR pressure
- book as per FMP
What should a driver do if MR pressure is <580kpa?
- confirm high voltage presence light is illuminated
- TEC call and RTA if needed
- full cab unattended, proceed along train listening for air leaks and compressors running
If compressors are found not to be running when MR pressure is <580kpa, how would you try to rectify this?
- train stable
- if they don’t start running -> declare train disabled
Under which cars can and MR leaks occur and the train doesn’t need to be declared disabled if the leak can be isolated?
Centre motors -> cars 3 and 4
What are the 3 trip faults that can occur?
- fails to raise
- fails to lower
- fails to reset
What are a driver’s actions if the trip fails to lower?
- TEC call and RTA if needed
- modified cab unattended
- check trip cock ACTIVE cock:
• if closed -> open
• if open -> raise trip in cab and
operate on secondary circuit
What are a driver’s actions if the trip fails to raise?
- lead cab -> continue as normal and report
- trailing cab -> isolate trip cock active cock
-> secure trip in raised
positon and book as per FMP
What are a drivers actions if the trip fails to reset?
- ensure no other fault lights illuminated
- manually reset the trip
- if set -> continue as normal
- if not set -> check trip cock reset cock:
• if closed -> open and try to reset
• if open -> raise trip in cab and operate on secondary circuit
What are a driver’s actions if the whistle isn’t sounding?
- operate whistle lever several times
- inspect high and low tone VICERS whitsle cocks in A side equipment cabinet:
• if isolated -> place to normal
• if not isolated -> inspect whistle
cock in A.P.P. and place normal if
isolated - if unable to rectify -> operate as per failed whistle instructions
What are a drivers actions if the whistle is sounding continuously?
- depress and release whistle lever several times
- isolate high and low VICERS whistle cocks one at a time -> if stops sounding, leave isolated
- if still sounding -> isoltae whistle cock in A.P.P.
- operate as per failed whistle restrictions
How would a driver identify which bogie has been isolated/sensor is defective?
- check LED indicators at the ends of each car
- check bogie isolating cock is in normal position
- if bogie isolated -> ascertain if fault has been booked with TC, reinstate the cock if there is no defect
- if bogie is normal -> TMM for defective sensor
What indication would a driver get for sticking brakes?
- 1 or more brake applied and wheel slide fault lights -> only while moving
- train won’t roll freely
- smoke from bogie
- distinct smell
How would you rectify sticking brakes?
- isolate affected bogie
- TMM to TC
- operate as per isolated bogies restrictions
How would a driver identify that park brakes are applied?
Parking brake applied fault light
How would a driver rectify applied park brakes during a prep?
- check all isolating cocks on brake rack are in correct position
- check for prevalent air leaks
How would a driver rectify applied park brakes in service?
- if train is rolling normally -> book fault and remove from service
- if train is sluggish -> check for smoke, smell, other signs of sticking brakes
- check train for prevalent air leaks -> isolate/blank where possible
- manually release affected SPB
How do you manually release a SPB?
- unlock padlock with AX key
- pull hand release wire
- relock padlock with AX key
What else must be isolated if the SPB needs to be manually released on a car that has been pneumatically isolated?
Aux reservoir must be fully drained prior releasing SPB
What 4 things could cause a locked axle?
- seizure of traction motors
- brake rigging/head failures
- axle box failures
- any other potential mechanical fault
What is the maximum speed when skidding wheels to clear the section?
5km/h
What fault lights will a driver get when the skidding wheels are on the:
- lead motor
- trailing motor
- trailer car
Lead motor:
- sevice brake
- traction
- 1 or more traction eq.
- wheel slide
Trailing motor:
- service brake
- 1 or more traction eq.
- wheel slide
Trailer car:
- service brake
- wheel slide
How would you rectify a locked axle?
- inspect appropriate motor/trailer car for possible locked axle
- if locked axle found -> remove from service max 5km/h
- if no locked axle found -> proceed with caution and remove from service, book as per FMP
How would you rectify a service brake fault?
- master controller to full service
- EMS switch to no. 1
- master controller to coast then immediately back to full service
- EMS switch to no. 2
What 3 features on an X’trap are used for train rescue purposes?
- EMS
- brake pipe
- brake pipe sensor
What are the 5 positions of the EMS?
1 - online holding brake inhibit
2 - normal
3 - rescued
4 - rescuing
5 - rescuing in propulsion
In what positions of the EMS is air present?
3, 4, 5
At what BP pressure will the safety loop open and close?
- open -> 300kpa
- close -> 430kpa
What is the purpose of the safety loop 110v supply switch?
- allows a trickle charge of 110vDC to be fed to disabled train
- allows safety loop to close and brakes to release
- done when there is a battery charger fault
In what cabs must the safety loop 110v supply switch be turned during train rescue?
- all driving cabs of disabled train
- cab of assisting train that is attached to disabled train
How do you charge the BP during train rescue?
- train stationary
- master controller of disabled and assisting trains to full service
- once low pressure in BP fault light extinguishes -> master controller back to coast
What is the maximum number of cars when:
- x’trap pulling x’trap
- x’trap pushing x’trap
- pulling -> 12 cars
- pushing -> 9 cars
What position does the EMS need to be in for disabled and assisting trains when x’trap pulling another x’trap non-electrically?
- disabled -> 3
- assisting -> 4
What position does the EMS need to be in for disabled and assisting trains when x’trap pushing another x’trap non-electrically?
- disabled -> 1
- assisting -> 4
What position does the EMS need to be in for disabled and assisting trains when x’trap rescuing another x’trap electrically?
Both in 2
What would you tell passengers if stabling for fault rectification?
- there is a fault that needs to be fixed
- saloon lights will dim for about 2 minutes
- saloon doors will remain closed and locked
Which of the 2 traction fault lights acts as a this car light?
- traction fault light
What immediate action is required if a traction fault occurs?
Nothing as TCU will isolate affected traction motors
If no traction power is available when a traction fault occurs, what are the drivers actions?
- train stable
- try for traction power from another cab
If there is no high voltage presence light and no other fault, what should a driver do?
Lamps test
What should the driver do if you get an AUX fault light?
- check aux mcb and reset if tripped
- perform train stable
How do you determine if there is a failure of the permanent low voltage line?
- check step light
- check cab fluoros
- check if panto raises
What does a service brake fault light indicate?
- one or more faults in service brake
- reduced braking effort on one or more cars
When will the air compressor fault light illuminate?
When 1 or more compressor is inoperative
What fault indications would you get if the BCU mcb has tripped?
- service brake
- 1 or more brake eq. fault
- major 2nd level
How do you reset VICERS after it has activated?
- bring train to a stand
- wait 10 seconds
- master controller to coast
- observe emergency brake applied light is illuminated
- press VICERS acknowledge button
When would you use positon 5 of the EMS?
Non-electrical rescue with another train type that isn’t x’trap
