XTRAP Faults Flashcards
What things can you do to conserve battery power?
(6 answers)
• Put REVERSER in a NEUTRAL
• Master controller key to off
• Headlights off
• turn cab lighting switch to off
• If daylight reduce saloon lights to emergency
• Ensure step light off by closing cab door
What light do you want to see when taking over a train?
High voltage presence
If Major, Major 2nd level or minor fault are illuminated what does it indicate?
Circuit breaker has tripped somewhere on train
If minor fault has illuminated where is the fault?
E box
What is the illuminated AUX fault indicate?
SIV Failure
What does the Battery charger fault indicate?
Battery charger had failed ( can be linked to SIV)
Will have approx 60 min of battery power on affected unit
What does the 24V converter fault light illuminated indicate?
One or more 110vDC to 24vDC converters has failed
If lose all 3 on a unit you will lose function of 24vDC equipment on that unit
If you get a low pressure in BP what do you check
Check emergency trainset mode switch is in 3,4 & 5 (2 normal)
What does Low pressure in MRP light illuminated indicate?
MR pressure has fallen below 650kpa
The train will fail when MR falls to 580kpa, Safety loop will open, Emy brake apply
If you get a low pressure in MRP light what do you check and at what KPa will both compressors come on
Check MRP gauge
580kpa - 650kpa
What does the Low Pressure in BP illuminated indicate?
BP has fallen below 430kpa during rescues
The train will fail when BP falls to 300kpa, safety loop opens and Emy brake apply
What does it mean when traction fault light illuminates?
Traction equipment has failed in this car
If you get a locked axel indication what light will you get or combination of
Service brake fault (any car always)
Traction fault (this car)
1 or more traction EQ fault ( train line)
Wheel slip ( when moving)
What does 1 or more Traction eq. Fault illuminated indicate?
Traction fault has occurred somewhere on the train
What indication besides lights would you get with a locked axel
Wheel slide
Sluggish train ( smoke, smell, retardation)
What does the speed input fault light illuminated indicate?
One or more speed sensors( tacho cables) has failed
You need at least one sport sensor or tachometer on a 6 car train for the threshold equipment to operate
Where are the circuit breakers located on the train?
( 3 answers)
• Cab MCB panel in drivers cab
• Trailer saloon left of door 2
• Electrical box ( Drivers don’t touch)
What circuit breakers are the most important? ( 4 answers)
• Safety loop negative power supply 23Q2
• Panto command
• Multiple unit relay 22Q6
• Safety loop positive power supply 23Q1
What are the circuit breakers called located in the trailer saloon?
• Tachy Unit
• BCU
• Panto 2
• Panto 1
• Aux inverter 2
• Aux inverter 1
What does a parking bake applied light indicate
Park brakes are applied
Can you reset any circuit breakers in the E box?
No
When park bakes are stuck on what reservoir do you need to drain before you manually release them
Auxiliary reservoir
What circuit breaker can you trip/reset to fix Panto lower/ raise faults?
Panto 1 or 2 in trailer 22Q10
What circuit breaker can you trip/reset to fix train shutting down incorrectly (stable)?
Panto command 22Q11 in motor
What lights do you get when you have sticking brakes and what do you do
1 or more brake applied
Wheel slide
Isolate defective bogie
What circuit breaker can you trip/reset to fix safety loop?
23Q1 or 23Q2
What do you do if you find a fault during train prep?
Contact TC if first attempt to reset a fault is unsuccessful
Can call PD for guidance
How many times can a fault be rectified in running?
3 times after that do not rectify
When will the all brake applied light be on
Only when emergency trainset mode switch is in the nr 1
Who must you contact before stabling a train for fault rectification?
Train control
Faults that may be rectified by a stable?
(3 answers)
• compressor faults
• SIV Faults
• Traction faults
What do you do when the 1 or more brake applied fault light comes on
Check for sticking brakes
Iso bogie and book
What do you do when you have: 1 or more brake applied & all brake applied
-Check emergency trainset mode switch in 2
-Check for sticking brakes
-Iso bogies
What do you do when service brake fault & 1 or more brake EQ fault is illuminated
• Place EMS to 1
• Master controller to coast and immediately reapply brakes
• turn safety loop bypass for 10sec and release
If does not rectify, train stable
If it doesn’t clear, book FMP
What do you do when service brake fault light
- master control to full service
- Place emergency trainset mode switch to nr 1
- To coast and immediately reapply brakes
- not rectify, train stable
- doesn’t clear, book FMP
What would you do when you have two HVAC stopped and one HVaC stopped light at the same time
Both HVAC in at least one car is defective
- check CB panel
- train stable
What would you do if you have one HVAC stopped light on
One HVAC in at least one car is defective
Continue in service
TMM
How many 24v converters do you need to have and what do you do with fault light?
1
Continue service and book FMP
What equipment in your cab can you check to make sure you have 24v
(4 answers)
Drivers seat adjustment
Speedometer
Marker lights
Windscreen wipers
If you have a battery charger fault light what can you do to rectify it and how long do you have if you cant
Stable train
60 mins to get off the mainline
If possible where must you perform a stable?
• platform
• under protection of home signal
• where level crossings will not remain active
What is the procedure to stable on the Mainline?
• TEC
• PA indicating fault, reduced lighting for 2 min and doors locked
• close saloon doors
• Press train stable
• Ensure High voltage light goes out
• When 1 or more Panto down light illuminates wait 5 seconds
• remove key
• Confirm all pantos lowered
• Wait 2 minutes then reactive leading cab
• Test the fault has cleared
• Book as per FMP
When an Xtrap is stabled how long will marker lights and emergency lights remain illuminated?
15 minutes, door will also remain locked
If the step light is not illuminated what could the cause be? (4)
• Step light defective
• Storage batteries flat
• Batteries isolated
• Battery box fuse is blown/missing
Where is battery box located?
A side trailer car
What do you do if batteries are isolated? Can you reset them?
No book as per FMP
What do you check if there is no voltage?
Battery box isolation switch:
If isolated report FMP via TMM
If not isolated train disabled
What do you do if there is voltage but under 90 volts?
Declare train disabled
What do you do if voltage is above 90 but pantos fail to raise?
• Check local and trailing Panto control buttons not latched in
• Attempt to raise Panto from another cab
If pantos fail to raise after trying in another cab what do you do?
• Go to trailer car and check the 3 way switch is in the automatic position
• Inspect Panto 1 and 2 circuit breakers are set
• Book as per FMP via TMM
What happens if the 3 way switch is in the manual lowering and isolation position?
Panto must not be raised contact TC
What must you do to isolate a Panto?
Stable the train
When isolating Panto after stabling the train and watching Panto lower what do you do?
• Go to trailer and place the 3 way switch to manual lowering and isolate position
• Activate lead cab to raise the other Panto
• Report as per FMP via TMM
How do you lower the Panto using the manual crank handle?
• Go to trailer and place the 3 way switch to manual lowering and isolate position
• Attach crank handle to the winder
• Wind in an anti clockwise direction until tension is felt
• Return crank handle to holder
• Confirm Panto lowered
• Book as per FMP via TMM
What is the procedure to coast under overhead obstruction with pantos lowered?
• Panto test make they lower within 10 seconds, leaving key in
• After completing test raise the pantos, if this fails contact TC
• Place master controller in Full service and turn EMS to 1 (online holding break inhibit)
• Apply enough traction power to coast clear of tramway or obstacle
• Once sufficient speed achieved and reasonable distance away from tramway or obstacle, lower the pantos
• When all T cars have cleared the first stanchion after tramway or obstacle bring train to a stand
• Turn EMS back to 2
• Ensure all T cars are clear of first stanchion and raise Pantos
What happens if 2 keys are in the train?
Emy brake applies because safety loop is open
What else could happen when 2 keys are in the train at the same time apart from Emy brake?
Safety loop circuit breakers tripping giving you Major, Major 2nd level and Minor fault lights
What can be done to rectify another cab active fault ?
• Cab to cab
• Look for key or cleaners key
• Activate each cab to find the cab without the other cab active fault ( this might fix fault)
• Perform train stable
If all fails train can only be driven from active cab
What to do if you have another cab active fault and competent employee available?
• The driver powers train from active cab
• The CE travels in the lead and operates the ESB as required
• Book as per FM
• Drive train in accordance with the rules to pushing or pulling xtraps
SPEED IS 15km/h
What do you do if you have another cab active faults and no competent employee available?
Declare train disabled
What do you check in your local cab if the emergency brake is applied and not releasing?
• Check 110v (try cab fluro)
• Trip lowered and reset
• Master controller not in Emy position
• Hand and foot pilot set
• VICERS activated?
• EMS in number 2 position or brake pipe low pressure during rescue
• MR above 580kpa
• Another cab active light ( lamps test to ensure not faulty)
• circuit breakers 23Q1, 23Q2 are SET
What to check in all cabs if Emy brake applied and not releasing ?
(2 answers)
• ESB
• All trips raised
If the emergency brakes fail to release after 2 three car trains have been coupled and you have tried to rectify what do you do?
Uncouple units because the coupler may be faulty, book as per FMP
If the Emergency brakes fail to release and you have tried to rectify what must you switch in order to drive the train?
Safety loop bypass
How do you by pass the safety loop?
• Break the seal in the safety loop Bypass turret switch
• Lift the guard
• Turn the turret switch to the bypass position
• Hold the turret switch against the spring tension
ISOLATE THE VICERS
What WILL NOT OPERATE when the safety loop bypass turret switch is held in bypass? (3)
• Master controller emergency brake position
• ESB
• Hand and foot pilot valves
When using the safety loop bypass switch do you need to set a pilot valve?
No
What happens if you let go of the Safety loop turret switch?
The spring tension will return the switch tit he NORMAL position and the Emy brake will apply
What safety equipment isn’t available during the operation of the safety loop bypass switch? (7)
• Emergency Position of the Master Controller
• Emergency Stop Button
• Hand and Foot Pilot Valves
• Auto Vigilance By-pass Button
• Trip
• Brake Pipe Pressure Switch (during train rescue)
• Main Reservoir Pressure Switch
How long will the Auto vigilance bypass button flash?
Every 30 seconds
How long do you have to press the auto vigilance button when flashing?
10 seconds it the Saftey loop will open and Emy brakes will apply
What should you isolate if the auto vigilance bypass has been operated?
VICERS
When can the VICERS system be isolated? (4 answers)
• Fault indicator illuminates and remains illuminated
• Safety Loop is By-passed
• Auto Vigilance is By-passed
• Abnormal operation of VICERS.
If overhead power is lost will VICERS run off the batteries?
Yes
Can batteries charge from an attached 3 car unit?
No
What happens if 1 SIV failures on one unit?
• Only 1 HVAC will operate on each car of that 3 car unit
• Only 1 air compressor will operate on the 3 car unit
Traction converter cooling fans will not be affected and operate normally
What happens if Two SIVs fail in one unit? (5 answers)
• Battery Charger
• Both Air Compressors
• Both Traction cooling fans
• All HVACs
- Saloon lights to emergency
If unable to reset the AUX circuit breaker or rectify SIV fault via Train stable what happens?
The unit will run off batteries until the safety loop opens during to low power
The batteries last for one hour and must be removed from service to the nearest siding
Where is the Door motor isolation switch located?
Left side of each door
What is the Motor release position?
Position 1
The RED handle is at its uppermost or vertical position and will disengage the door motor should the door become jammed
What is the motor isolate position?
Position 2
In this position the RED handle is 45 degrees above horizontal
What is the Normal position for the door motor isolation switch?
Position 3
The RED handle is horizontal
What is the Motor lock close position?
Position 4
In this position the RED handle in 45 degrees below horizontal and will lock and isolate the motor and make the door non-operational
What happens if you have FDCL and have stopped Mid section?
You will not be able to get traction power until FDCL is rectified or Door loop bypass is isolated
RTA may be required to investigate fault
What indications will you get in the leading cab when a DER is operated?
(4 answers)
• FDCL
• Door Emergency Handle activated status light illuminates
• Flashing Red answer acknowledge button
• DDU emits beep sound
How to reset an operated DER?
Reset the DER by turning the Tri-key anti clockwise against spring tension
What must be done when required to isolate a saloon door?
• Locate the door if advised by Train Control
• Open the overhead cabinet to the left of the door
• Move the Motor Isolation Switch to Motor Release (Position 1 Fully raised)
• Manually close the door
• Move the Motor Isolation Switch to Motor Lock Close (Position 4 Fully lowered)
• Apply door not in use stickers
• Report as per the FMP
If one air compressor on a 3 car unit becomes defective what happens?
The other compressor will automatically take over provided there is a SIV operating on that 3 car unit
When do Both compressors operate simultaneously?
When MR pressure falls below 650kpa
What happens if you turn the compressor governor cock to isolate?
The compressors will remain in whatever state they were in
What do you do if MR pressure is between 580 and 750kpa?
• Book as per FMP
• Continue to monitor MR pressure
What happens if MR pressure falls below 580kpa?
Safety loop will open
• inspect MR for leaks and listen for operation of air compressors
What do you do if compressors are not running?
• Attempt a train stable
• If compressors don’t start running declare train disabled
What do you do if a MR air leak is detected under centre motors? Cars 3+4
• Attempt to plug leak
If unable to Plug
• Isolate MR end cocks
• Fully drain Aux res
• Manually release SPB on affected car
• Book as per FMP
• Operate train as per bogies isolated
What do you do if MR air leak detected under any other car? 1+2+5+6
• Attempt to plug the leak
** If unable to Plug**
• Declare train disabled
• Train must be rescued from advance if fault is on lead motor or trailer
• Train must be rescued from rear if Fault is in trailing motor or trailer
If trip cock device fails to lower and after attempting to raise and lower the trip again what do you do?
• Log a TEC call (if required)
• Obtain track access (if required)
• Perform a modified cab unattended procedure
• Check the Trip Cock Active Isolating cock in the Aux Pneumatic panel
If trip fails to lower and trip cock active is closed what do you do?
Open it and continue in normal operation
If trip cock active is open and trip fails to lower what do you do?
• Place trip cock device to the raised position
• Run on the secondary circuit and press the Emergency auto vigilance bypass button as required
• Book as per FMP
What do you do if a trip fails to raise in a trailing cab?
• Obtain track access (if required)
• Perform a modified cab unattended procedure
• Isolate the Trip Cock Active Isolating Cock located in the Aux Pneumatic Panel
• Secure the Trip in the RAISED position by all means necessary
• Book as per FMP
How do you manually reset the trip?
Using the Spring on top of the trip
If trip fails to reset which cock to you check?
Trip cock reset isolating cock in the Aux Pneumatic panel
If the trip cock reset isolating cock is closed how do you reset the trip?
Open the cock and try to reset trip
If the trip cock reset isolating cock is open what do you do?
• Place the Trip Cock Device Switch to the raised position
• Operate on the Secondary Circuit and Press the Emergency Auto Vigilance By-pass button as required
• Book as per FMP
What do you do if whistle not sounding?
• Operate the whistle lever several times
• Inspect the Low and High tone, VICERS Whistle Isolating cocks (located in the A side equipment cabinet)
If Isolated
• Place to normal
If normal
• Obtain track access (if required)
• Perform a modified cab unattended procedure
• Inspect the Whistle and Pneumatic Isolating Cocks and place to normal if isolated
Fault not rectified
• Book as per FMP and run as per failed whistle
What to do if Whistle is sounding continuously?
• Depress and release the whistle lever several times
If this fails
• If the LOW tone is sounding continuously isolate the LOW Tone VICERS isolating cock. Book as per FMP and continue using the HIGH Tone
• If the HIGH tone is sounding continuously isolate the HIGH Tone VICERS isolating cock. Book as per FMP and continue using the LOW Tone
Whistle continues to sound
• Obtain track access (if required)
• Perform a modified cab unattended procedure
• Isolate the Whistle isolating cock (located in the Aux Pneumatic panel)
• Book as per FMP and run as per operation requirements for Failed Whistle
How do you rectify sticking brakes?
• Isolate bogie by going to the affected brake unit and turning the bogie isolation cock
• TMM
• Operate train in accordance with bogies isolated
What do you do if you have a park brake applied light in service?
• If train is rolling normally, book fault as per FMP and remove the train from
• If train is sluggish, check for smoke, smell, or other signs of sticking brakes
• Check train for prevalent air leaks
• Manually release the affected spring park brakes
If a car has been Pneumatically isolated what must you do before manually releasing SPB?
Fully drain auxiliary res
What fault lights will you get if you have a locked axle on the lead motor?
Service brake fault
Traction fault
1 or more traction eq. Fault
Wheel slide
High voltage presence
What fault lights will you get when you have locked axles on a trailing motor?
Service brake fault
1 or more traction eq. Fault
Wheel slide
High voltage presence
What fault lights will you get if you have a locked axle on a trailer car?
Service brake fault
Wheel slide
How do you rectify a locked axle?
• Inspect appropriate Motor or Trailer car for possible locked axle
• If locked axle located detected, remove train from service at a max of 5km
• If no locked axle is evident, proceed with caution and remove the train from service
• Book as per FMP
How do you rectify a service brake fault?
• Placing the Master Controller to FULL SERVICE
• Operating EMY Trainset Mode Switch to NUMBER 1 (Inhibit Holding Brake)
• Placing the Master Controller to COAST, then immediately back to FULL SERVICE
• Operating EMY Trainset Mode Switch to NUMBER 2
If the battery charger is inoperative and can’t be fixed. Can the train stay in service
No, train needs to be shunted
What 4 fault lights will you get if the auxiliary and SIVs fail
Aux fault
Battery charger fault
Two HVAC stopped
One HVAC stopped
What 7 fault light will you get when you have a traction and panto fault
Aux fault
Battery charger fault
Traction fault ( if lead panto)
1 or more traction EQ fault
One HVAC stopped
Two HVAC stopped
What fault light will you get if you have a traction fault in the trailing car
1or more traction EQ fault
Stable train
What fault light will you get if you have a traction fault in the leading car
Traction fault
1 or more traction EQ fault
Stable train
Traction power is available turn traction iso switch on affect motor
Book FMP
No power, try from trailimg cab
Trailing cab = CE
What fault light will you get when a DER has been pullled
Door emergency handle activated
What fault light will you get when the tachometer speed input has a fault
Speed input fault
Speedometer and door release operates at least one speed probe has failed.
Continue service and book FMP
If you have a vigilance fault light how do you reset it
Reset acknowledge button:
Speed 0km for 10sec
Master controller to coast
Emergency brake applied
If fault light remains book FMP
How to rectify the emergency brake applied light
Fixed whatever broke the safety loop and applied the emergency brakes
What fault lights, 3 lights, would you get if an attempt was made to activate a cab when a key is already activated
Major
Major 2nd level
Minor fault light
What is the process if other cab operative light is on
-Check all other cabs for a second key
- no key is found
-Active each cab to see if the other cab operative light goes out
-if no master controller key switch is found to be faulty, stable train
- if stable did not work, you need CE to drive from a different cab
If you have a minor fault. What are the fault and can you rectify it
CB tripped
No, just book FMP
If you have fault lights major 2nd level fault and 1or more Panto down what do you check to rectify it
Ensure Pantos are raised and check 22Q10 CB in cab and trailer
- If Traction fault light is on, its on the lead unit, if not, trailing unit
What do you do if you have major 2nd level and low pressure in MRP
Check main reservoir pressure above 650kpa if so safety loop bypass switch to release the emergency brake
When must the safety loop bypass switch on a Xtrap not be operated when main pressure fails below what
580kpa
If you have a major 2nd level fault and compressors fault lights and you MR stays above 650kpa what do you do?
Normal service and book FMP
If you have major 2nd level fault and compressors fault lights and you MR falls below 650kpa
Conduct fault finding as per low pressure MRP
If you have a. Major 2 ND level and Aux fault light what do you do to rectify it
Check CB in trailer door 2 left
Continue service
Book FMP
If you have major fault and service brake fault what do you do to rectify the fault
Check CB, if all set
- place master controller to full service
- operate EMS to nr 1
- go to coast and immediately reapply
- book FMP
What do you do if you get a major fault and Emy brake applied light?
Check CB - safety loop 23Q1&23Q2
Reset CB if Emy brakes release all good
if not try safety loop bypass, if release book FMP
Emy brake fail to release try other cabs to release
If Emy can’t release - disabled
What is the PA fault finding procedure if both PA’s are not working?
Book FMP
Stable train for 2 mins
Restart and wait an additional 4mins and restart PA
What button do you press if you have a fault message on the DTRS
“X” on keypad
If the fixed DTRS head unit is inoperative what procedure do you follow to make your portable radio your primary
Place portable radio in the cradle
Deactivate the cab
Trip the DTRS MCB in the CB panel
Reactivate cab
Portable will now be primary
Submit TMM
If all the 24v DC converts fail can the train dock up
No will be disabled
What 6 things are linked to the tachometer
Door release button
Uncouple button
Trip cock once activated cannot be reset
No speedometer
Brake pipe pressure will not restore after emy application
VICERS cannot reset
What fault light is linked to the tachometer
Speed input fault
If a tachometer CB trips where do you have to check to reset the CB
Trailer car door 2 left
How do you rectify a tachometer/ speed input fault
Stable train
If fault remains tacho bypass switch
Does the TCU automatically isolate equipment
Yes
What 4 indications will you get if the TCU isolated equipment
Traction fault ( on affected motor)
1 or more traction EQ fault ( train line)
No green LEDs on the power indicator
Possible shuddering while the train is in motion
If you have traction equipment faults how do you rectify it
Stable train
If did not work, find the affected cab and place traction isolate switch to Isolate to extinguish 1 or more traction EQ fault light
What are the 5 positions of the EMS Switch?
- Online Holding brake inhibit
- Normal
- Rescued
- Rescuing
- Rescuing in propulsion
When is the Rescuing (4) position for?
When pulling
What is the Rescuing in propulsion (5) position for?
Used when pushing
In what switch positions is brake pipe air present?
3,4,5
What happens when brake pipe reduces below 300kpa?
Safety loop opens, emergency brake applies
At what pressure does the safety loop close in brake pipe mode?
430kpa
Xtrap pushing xtrap. What is the max combined train length
9 cars
Xtrap pulling xtrap. What is the max combined train length
12 cars
Not for transferring from one stabling location to another via main line
Traction is cut out when brake pipe pressure falls below 480 in what position the EMS?
4 and 5
How do you charge the brake pipe on an Xtrap?
When stationary both Xtrap Master controller handles placed into full service until low pressure in BP light extinguishes
Then place both back to coast
When pushing a disabled train what POSITIONS of the EMS will the disabled train be in?
1
In what position does the driver need to place the safety loop 110v supply switch in the CB panel, in ALL driving cabs of the disabled train
Rescue position
When pushing or pulling a disabled xtrap-xtrap what position of the EMS will the rescuing train be in?
4
When pulling a disabled train what position of the EMS will the disabled train be in?
3
What button can be pressed to apply the Emy brakes in a rescue situation. What CB will also trip
Emergency stop pushbutton
23Q1 & 23Q2
If you isolate a door what position will the Door Motor Isolation Switch be left in?
Motor Lock Close (4)
What is the likely cause of a sticking park brake?
Main res leak
What are the indications of a locked axle in the exam?
Service brake fault
Traction fault
1 or more traction eq fault
