180 Passout Flashcards by John Sheldrake

The engines are running and you have brake release. List 3 reasons why you may not be able to gain traction power.

Traction circuit not engaged – press Engine Start button to engage traction circuit,
DRA in,
SDO away from normal,
CPBC opened too quickly,
Gearbox problem

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List 4 things that would prevent an engine from being started.

Engine Emergency STOP button pressed, 
Shore supply connected, 
Engine isolated via SWR ENI, 
Voith Rack dead, 
CB-TRM tripped, 
Fire system isolated

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List 8 causes of a failure to obtain Brake Release.

AWS System fault,
DSD fault, DVD fault,
Emergency Brake CPBC or Plunger in either cab, BCU defective,
CB LBS tripped,
Drum switch in wrong position or coupler button pressed,
Brake Control MCB in either cab,
Loss of Door Interlock, PASSCOMM / EGRESS

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If the Emergency brakes applied, released, the engine shut down, and the overspeed light illuminates what could be the cause?

CB-TRM tripped

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If the brakes apply in Full Service and will not release, what is the cause?

Defective BCU
AWS MCB Tripped
Brake Plunger operated
Train Wiring fault – will need to operate the Brake Fault Override (CB-LBS IN 3901)

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List the 5 steps for isolating the Parking Brake

Check status light in 3901 cupboard
Operate the Parking Brake Interlock Isolation Switch
Operate the Parking Brake Isolation Cock on the Brake Frame
Operate the 3 x ‘T’ Parking Brake actuators on underneath the leading bogies
Rotational Test

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How many compressors are there on a unit, and where are they?

2 – on car 509 and 559, (E&C)

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You are unable to build up main reservoir pressure. List 3 possible causes.

Faulty Compressor-Check and reset CB-CM in 3901- Check and reset CB-CMMA in 4901
Defective Compressor in C or E and operate SWR-CCI to run compressor continuously
RCD at bottom of 4901 cupboard tripped
Leaks on air system – suspension, horn, inter-car connection, main reservoir, brake system,
If fault is on A, B, or D then check inter-car connections

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Under what circumstances would you use the “Obstacle Close & Lock” button

When you are unable to close the unit doors, and once the guard has assured you The doors are clear as the doors will close with considerable force.

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List 2 MCB’s that could affect normal door operation?

Door Control MCB
Door Close MCB
CB-TRM if tripped on leading unit

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What is the purpose of the TUDI switch, and in which cab would you operate it?

To enable traincrew to lock out the rear unit’s doors of a 10 car formation. Must be operated in the rear cab of the leading unit

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State the three things on a class 180 which will cause the Doors to close without obstacle detection potentially causing injury to anyone caught in the door.

Obstacle Close and Lock button operated
Auxiliaries Trip Button operated
CB-TRN in 3901 tripped.

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What must you do after dealing with a dragging brake problem?

Carry out a rotational test before proceeding.

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List your actions on becoming aware of a Passcom or Egress activation.

If departing a station stop the train.
If on a running line override the call, proceed
until at a safe and suitable place,
use the Communications Panel to speak to the person when it is safe to do so

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You are travelling along and your Fire bells ring. On looking out of the window you see that the hazard light is illuminated. On coming to a stand you notice that flames are visible and the Fire system does not appear to have activated.

Operate Air-Con Stable,
Proceed below Sole-bar with portable fire bottle and pull Manual Fire Pull to fire second bottle, and use portable fire bottle if needed.

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Upon mobilising your unit your fire bells ring and you notice your Fire System has deployed on you middle vehicle. You confirm that a Fire has not occurred however your system has discharged. What do you need to isolate?

SWR-ENI and SWR-FEI on the affected vehicle.

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State what the result of Management Computer 1 MCB tripping. Can you come into service from a maintenance depot?

Loss of customer information. Cannot come into service from a maintenance depot, and the signaller must be informed.

State what the result of Management Computer 1 & 2 MCB tripping. Can you come into service from a maintenance depot?

No
All traincrew communication for cab to cab,
PA, PASSCOMM, and so on will be lost

State which MCB’s will effect train operation if they trip in the rear cab.

Train Door Interlock,
Brake Control,
Passenger Alarm

In 3901 what will the effect of CB-ALTC be?

Loss of 24v feed to Hydrostatic system for the Alternator. Need to cross feedback from other vehicle by locally shutting down engine.

In 3901 what will the effect of CB-PXF be?

Will not matter under normal operation, but will prevent a cross feed in the event of a loss of electrical supply on the affected vehicle

In 3901 what will the effect of CB-MDC2 be?

Loss of Cooler Group Controller resulting in an engine shut down

How would you check the amount of sand available on the class 180?

By opening and checking the sand boxes fitted on the driving vehicles.

In what brake position and under what conditions does the Auto Sander operate?

Above 50% of brake on the CPBC, and when WSP is detected.

What MCB in 3901 will affect the availability of sanding?

CB-SDG on A & E

Identify the different positions of the SDO switch in this diagram and state which doors each position will release in both the 5 and 10 Car formation.

Normal – Door release not possible 0/5 – Door release only possible on the front 5 of a 10 car 1/6 – Door release front 1 of a 5 car or front 6 of a 10 car 2/7 – Door release front 2 of a 5 car or front 7 of a 10 car 3/8 – Door release front 3 of a 5 car or front 8 of a 10 car 4/9 – Door release front 4 of a 5 car or front 9 of a 10 car 5//10 – All Vehicles – All doors of a 5 or 10 car unit.

State which position the SDO must be in to enable power to be available.

Normal

State how and when you would test the SDO switch.

Use the Door Test facility on the TMS – must be done during a PREP

State the risks of incorrect operation of the SDO switch especially if operating at short platforms.

If the SDO is set to the wrong position there is a risk that doors off the platform will be released and customers could fall from the train.

What isolation cock can you operate and where if the HVAC system in the cab fails?

The emergency face vent cock in the panel below the centre panel of the driving desk

Where on the class 180 would you find the Parking Brake Application cock, and would you need a carriage key to access it?

At the drivers knee. You do not need a carriage key as there is a pull release for this panel

External Door Isolation. Explain how you would operate this equipment to isolate an external door.

Use a carriage key to unlock the door isolation panel above the door. Operate the black pull handle mechanism isolate the door.

Vestibule Door. Identify the two isolation switches labelled on this picture and explain how you would operate them to isolate the vestibule door.

Pneumatic Isolation switch Electrical isolation switch

The Electrical System. On the diagram below is detailed all of the locations of electrical systems on the class 180 and what sort of devices are contained, (eg: Mcb’s / SWR’s / RCD’s).

Driving cab MCB Panel Safety System Isolation Panel –Driver Key/Switches 3901 Cupboard – SWR / MCBs / Push Buttons 4901 Cupboard – RCDs / MCBs / Fuses

State the consequences of moving a class 180 with an equipment raft door open?

Because the door opens outwards and upwards it can collide with building and other trains that pass the class 180

In order from the driving cab state the names of the equipment rafts below the sole-bar.

Fuel / Brakes Batteries / Cooler Unit / Engine / Gear Box

Below is the Crew-Door of a class 180. Please identify each of the items of equipment. What would be the consequence of opening a crew-door in service before the doors had been released?

External Egress Slide Crew Door Isolation Lock External Crew Door Close / Release Control – If opened before the doors are released the Driver to Guard buzzer will not function

Under Rule Book Module SP which speeds apply to the class 180?

MU / HST

In addition to TPWS / AWS what additional safety system is fitted to the class 180?

ATP – Automatic Train Protection

What type of brake system is fitted to a class 180 (both types), when does the secondary system operate (if commissioned), and what indication would you have on the brake gauge?

Disc Brake Variable Electro-Pneumatic – Dynamic Braking above 30mph and when WSP is not operating - the brake cylinder will momentarily rise and then fall towards zero.

What provides the primary and secondary suspension on a class 180?

Hydraulic Primary | Air Bag secondary

Explain the order of fault finding

A logical progression from the driving desk indications / TMS / MCB’s / Gauges then Hazard Lights, and other indications down the train.