Xtrapolis Faults - Rectification Flashcards
When overhead power is lost, is air conditioning and ventilation capability available?
No
With loss of overhead power, what should be turned off to conserve power?
Reverser to neutral
Master controller key to off
Headlights off
If during the day cab lights to off abs emergency lighting to off
Ensure step lights are off by closing cab doors
When practical, what should be stated on the PA during loss of overhead?
Duration of delay
Transfers to assisting trains
Detraining at stations
Any other arrangements
What would Major and minor 2nd level fault indicate?
MCB has tripped in the motor or trailer cars
What would a minor fault indicate?
An MCB that the driver cannot access
Where are the trailer car MCBs located?
Compartment to the left of door 2
Name the circuit breakers in the trailer car?
Tachy Unit
BCU
Panto 1&2
Aux inverter 1&2
Where is the EBOX mcbs located and can they be accessed by a driver?
Located A side of both M and T cars and they cannot be accessed by a driver
How many times can faults be reset until the defect cannot be rectified unless trying to clear the main line after being totally disabled?
3 times
If drivers cannot get in touch with TC for a train stable, who is the next contact?
Principal drivers
How long will marker lights and saloon lights remain illuminated during a train stable?
15 minutes
When stabling what lights need to extinguish and illuminate before the key is removed
High voltage extinguish
1 or more panto illuminates
What safety equipment fails to work with a bypassed safety loop?
Emergency application with MC ESB Hand and foot pilot valve Auto vigilance bypass Trip Brake pipe pressure switch Main res pressure switch
How do you rectify another cab active fault?
Cab to cab
Check for cleaners keys and drivers keys in other cabs
Put key in each cab and try to identify faulty cab and turning the key on and off to reset the other cab operative alarm
Train stable
If the other cab active is found, where is the driver to drive from?
The faulty active cab with a CE in the front utilising the ESB
What indication would a driver get if a panto fails to make contact with overhead?
High voltage presence light fails to illuminate after 30 seconds
If there is no voltage what is the drivers duties?
Check the battery box to see if it’s isolated
If it is book it with TC
If not isolated declare train disabled
If under 90 volts on the voltage meter for train start up, what is the procedure?
Declare train disabled
If pantos fail to raise and driver has over 90 volts what are the steps?
Check the panto latching buttons in the drivers cab
Check pantograph command in circuit breaker panel
Attempt to raise from another car
If pantos fail to raise from another car, what must a driver inspect?
Trailer car and check the 3 way switch is in the auto position
Inspect panto 1 and 2 cb are set
Raise pantos manually only under the instruction of TC
What three positions does the 3 way pantograph switch have?
Manually raise
Automatic
Manually lower and isolate
Where is the pantograph 3 way switch located?
To the right of door 4 in the trailer car
After manually raising the pantograph what must a driver do to ensure it stays up and responds to commands from the lead cab?
Turn the switch back to automatic
When raising Pantographs, what direction raises and lowers the pantograph?
Clockwise to raise
Anti clockwise to lower
When isolating a pantograph, what is the preferred way to do this?
Train stable
Confirm panto is down
Turn the 3 way switch to manually lowered and isolated
Activate cab to ensure the panto is down
When operating with a panto down, what could be the consequences?
Panto isn’t feeding power to the SIVS and battery charger meaning that unit is running off battery power
When coasting under a tramway square, after the pantograph test, what is the extra step for the procedure and why?
Emergency train set switch to brake 1, online holding brake inhibit
This is to ensure the holding brake does not affect the train coasting under the hazard
If driver has failed to clear obstruction, what type of trains can attach from the rear to push the driver through the obstruction?
Xtrapolis only
What direction must another type of train come to the assistance of the Xtrapolis stuck under an obstruction or tramway square?
From the advance (very long winded, weird question)
How would a driver bypass a defective hand or foot pilot valve?
Vigilance bypass switch, utilising the auto vigilance button every 40 seconds (30 seconds with a 10 second flashing warning)
When bypassing vigilance devices, what must also be isolated?
VICERS
What circumstances must the VICERS be isolated?
Safety loop bypass
Fault indicator stays illuminated
Auto vigilance is bypassed
Abnormal operation of vicers
