170 Traction Flashcards
How many vehicles does the 170 have?
3
What type of unit is a 170?
Diesel Multiple Unit/ Multiple Unit/ Sprinter/ High Speed Train
What is the maximum configuration of a 170 in passenger service and ECS?
6 cars in passenger service & 12 cars ECS
What is the max. speed on a 170?
100mph
What type of brakes does the 170 have?
Disc brakes
How much enhanced brake does the 170 have when in emergency?
20%
How do you check the coolant level on a 170 unit?
Via a touch operated LED located on body of unit- key must be inserted for this to operate
How many bogies are there per vehicle?
2 bogies per vehicle (6 per 170)
What does the hydrostatic system provide the train with?
Battery charging, engine cooling (via radiator fan) and air conditioning.
How is the engine throttle controlled in the cab?
Via the Combined Power Brake Controller which operates valves to regulate flow of fuel to the engine.
How many air rafts are there per train?
1 per vehicle
How many isolating cocks are there per air raft for the air suspension?
2 isolating cocks- 1 per bogie
How many surge tanks are there on the no.1 end of the vehicle?
1 surge tank
How many surge tanks are there on the no.2 end of the vehicle?
2 surge tanks
In total how many surge tanks are there per vehicle?
3 surge tanks
What are your actions in the event of an air leak on the air suspension system?
Isolate both air suspension cocks on the air raft and then drain all 3 surge tanks. Transfer pax to unaffected vehicles but if not possible, max. 45mph. If ECS, travel at line speed.
Where are the sanders located on the 170?
Front and rear vehicles
When are the sanders operated automatically?
When WSP detects wheelslide in step 2 or 3 brake. Sand auto deployed when brake put into emergency.
Will sanders operate in step 1?
No but WSP will still operate to assist with train’s braking
What will happen when taking power if wheelslip is detected?
Engine will revert to idle and manual sanding will be available for 10 seconds after each occasion of wheelslip by pressing and holding in-cab sander button. If further sand needed, must wait for engine to idle again before pressing sand button again.
How can the sanding system be tested?
Via a push button at sole bar
What components are on the air raft?
2x brake cylinder isolation cocks
2x air suspension isolation cocks
Main reservoir isolation cock
Compressor governor isolation cock
Local main reservoir pipe (Norgren filter only)
What components are on the raft located in the driver’s cab?
Parking Brake Application Cock
Horn isolating cock
Uncouple isolating cock
Trip cock (not for Northern)
Cab door isolating cock
Washer isolating cock
Where are the emergency coupling isolating cock and MRPIC located?
At the front of each end vehicle in the 1/4 past 6 positions.
ECIC- normal position is 1/4 past (isolated to allow schrader hose to be inserted- then reinstated)
MRPIC- normal position is 6 o’clock (not isolated)
What could be used if applying the PBAC was unsuccessful on the 170?
The Emergency Brake Application Cock (EBAC).
How does the Emergency Brake Application Cock work and when would you use this?
Use if PBAC unsuccessful. EBAC exhausts air from Main Reservoir Pipe, applying brakes through low MAPS.
Which wheel does the sand apply to?
3rd wheels
Where is the sand isolating cock?
Behind the sand box on the front and rear vehicles only.
Where is the internal brake isolating cock located and what does this isolate?
No.1 end of main saloon near A1/A2 doors under seat level.
The brake reservoir itself.
On the middle vehicle, what is located in the same location as the internal brake isolating cock?
The PBAC and brake cylinder gauge.
What is located on the ESIS panel?
Engine start and stop buttons, the rotary isolation switch (normal/isolated) and prime fuel.
Where are the fire system manual pulls located?
1 pull on each side of each vehicle.
How many fire bottles are there per vehicle?
2- auto and manual
Where is the isolating cock for the auxiliary heater located?
To the left hand side of the auxiliary heater.
Where is the engine fuel isolation cock located?
Between the engine and the air filter
When must step 3 be used on the 170?
Whenever the train is at a stand.
Where is the BCU located?
Hidden between the battery box and the engine.
What are dragging brakes usually caused by?
Air trapped in the brake cylinder and brakes not fully releasing.
What indications would you receive in the cab if you had dragging brakes?
- Level 1 flashing fault light
- Local fault light (in affected vehicle’s cab or no.2 cupboard on middle vehicle)
- Dragging brakes fault light
What is the procedure to rectify dragging brakes?
1) Secure train using PBAC
2) Place CPBC to off
3) Check brake gauge in affected vehicle (in cab gauge/under seat near A1/A2 doors)
4) Vent air from affected cylinders using Brake Cylinder Isolation Cocks on air raft. Allow air to release and then reinstate the isolating cocks.
5) Check the gauge on affected coach has returned to zero
6) Return to cab, apply step 3 brake and then release. Check gauge on affected coach remains at zero.
7) Replace brake to step 3 and release PBAC and proceed as normal.
If this doesn’t work, isolate brakes on affected coach and adhere to Brake Regs, DOTE
What are your actions if a dragging brake light illuminates but is not accompanied by a Train Fault light?
Report to maintenance control immediately, bringing train to a stand to do so.
What is the difference between the internal brake isolating cock and the external brake isolating cocks?
Internal BIC is for the reservoir
External BICs are for the cylinders
What must you remember about isolating brakes from the internal BIC?
It bypasses the Low Main Air Governor- to release the brake, EBS must be used.
When should the emergency brake plunger be used?
When the CPBC jams when passing through the gate
By someone on 2nd man’s side
By conductor in any other cab in an emergency
How long do you have to wait after an emergency brake application for the brake to release?
2 minutes
How do you silence the alarm after pressing the emergency brake plunger?
Resetting the emergency plunger when stationary.
What is located on the Safety Systems panel?
AWS isolation (also isolates TPWS)
DSD isolation
Vigilance isolation
TIS (when isolated allows door to move with door open/fault on interlock)
Passcom isolation
DRA isolation
EBS
Fire Alarm- isolates fire bell
How do you isolate something on the Safety Systems panel?
Driver’s key in and rotate 90 degrees clockwise
What indications will you receive that a safety system has been isolated?
Red system isolated button on driver’s desk and blue external light in destination indicator.
If DSD and/or vigilance is isolated, will you have a blue light exernally?
Only if both systems are isolated.
How do you isolate TCA & sanders on the 170?
On bulkhead behind driver- break glass seal and then move switch to isolate.
How can you override a passcom on 170 and when can you not do this?
With the yellow mushroom at foot level- you must not do this if leaving a station as someone could be being dragged.
What will happen if you kick the mushroom button when a passcom has not been pressed?
Emergency brake demand
What indications will you receive in the cab that a passcom has been activated?
Audible buzzer in cab, yellow passcom light flashing on desk, hazard light on affected vehicle.
What are the driver’s actions upon hearing a passcom?
Allow train to come to a stand by applying step 3 brake unless driver deems it an unsuitable location, in which case override within 5 seconds by pressing and holding mushroom (this stops alarm from sounding)
How can you silence the passcom alarm when the train comes to a stand?
By tripping fault protect MCB if required to have conversation with guard or signaller. If tripped longer than 15 mins, shuts engine down- remember to reinstate.
What locations would be unsuitable to stop if passcom pressed?
Tunnel, viaduct or any location where it would be difficult to deal with an emergency situation.
When will the passcom indicator in the cab sound and flash?
Passcom and call for aid activated
Brake MCB tripped
Train Control Circuit Breaker tripped
2 drivers keys active
How do you access the 170 in normal circumstances?
Via pull down handle located beside cab door at floor level (may be locked with ‘T’ key).
How do you access the 170 in emergency and what must you do after operating these?
Emergency pulls located in middle of vehicles at sole bar level- catch must be lifted to operate. Must manually close doors or operate ‘doors close’ button after using.
How do you egress the 170 cab in normal circumstances and in an emergency?
Via black push button under flap or green emergency handle.
What indication do you receive that a cab door is not closed properly?
Red light above door.
Where are emergency passenger egress handles located on the train?
At every passenger door behind a break glass cover
What happens when emergency egress handle pulled?
If moving over 6mph, red ‘door interlock lost’ light will illuminate and brakes apply after 5 seconds- may use mushroom to override to select suitable location.
Pax doors unlock when speed below 3mph or after 90 seconds
Audible hustle alarm sounds at affected doors
Doors can then be opened further by hand
What will happen if TIS isolated and emergency egress is subsequently used?
Driver will not be aware that egress has been operated.
How do you reset an emergency egress?
Insert ‘T’ key to return handle to normal position, stop hustle alarm and illuminate doors close buttons- by pressing door close, doors will close and allow brakes to be released by driver.
How are the main passenger doors operated?
Electrically
How do you manually lock doors out of use?
Follow instructions on yellow label under door panel above passenger doors. Check door ‘out of service’ sign illuminated and carry out a push test.
How do you lock vestibule doors?
Isolate doors electrically by tripping internal door MCB, close doors manually and then lock with carriage key.
When TIS isolated, what must you check in relation to the driver’s door?
That the red light above door is extinguished prior to moving.
How are the cab doors operated?
Powered electrically and by air
Where is the fire test button on the 170?
FAT button in locked cupboard behind driver’s seat
Where is the fire isolation switch?
On the in-cab safety system isolations panel.
Where is the TPWS Temporary Isolation Switch?
In locked cupboard behind driver’s seat. Switch is not sealed.
If you arrive at a driving cab and the brake is not in step 3, what are your actions?
Move to step 3 before inserting key to prevent risk of ‘trapping the brake’ in off and causing the unit to roll & prevents brakes releasing as main air builds up and MAPS is overcome.
What are your actions if you need to leave the cab unattended?
Brake in step 3 and key removed to prevent risk of rolling.
Buzzer codes only sound if guard keyed in at DKS panel & cannot be heard in pax saloon. What are your actions if required to contact guard using a buzzer code after a station stopping incident?
Use buzzer code and you must make a PA.
Where must the direction selector be set to start the engine?
Neutral.
Could the DSD alarm sound even if the direction is in neutral?
Yes.
What are your actions if the engines will not start?
Press engine start again within 20 seconds of first trying as may be due to cross feed not kicking in yet.
If opportunity missed, shut down all engines, wait 30 seconds and perform full restart.
Follow above if engine lost in service.
Try to start engine locally with driver’s key in, direction in neutral and step 3 brake selected.
If you cannot restart engine, it is fine to run on two engines as long as cross feed is working to supply electrical power for lights but must report to maintenance and repair book. If cross feeding not operating, unit to be removed from service to prevent brake application due to battery drain.
If coupling a 170 to a 15x, which unit must be coupled from?
Always couple from the 170
If you are required to couple a 170 and a 155, what must you do?
Contact maintenance control for instructions.
If a 15x and 170 are coupled together and a passcom is operated from the 15x, what are you unable to do in the driving cab?
Override the passcom via the mushroom button.
What is a level 1 fault?
Red flashing light- requires immediate attention
What is a level 2 fault?
Red steady light- carry on to destinaton
Name the level 1 faults?
Dragging brakes, loss of brake cylinder pressure, transmission, parking brake, TCA
Name the level 2 faults?
Battery charging, WSP, Fire system, Doors, Engine, Double tail lamp failure
When would you look in the No.2 End Cupboard?
When you have received a general fault light, the no.2 cupboard will tell you if it is a local fault to identify affected vehicle.
To identify a specific fault light on each individual vehicle.
When a minor fault allows train to proceed, fault isolation switches in no.2 cupboard clear the fault lights in the cab.
Where is the fire manual override button?
On bulkhead behind driver.
How do 170s cross feed between vehicles?
Automatically
How long is each car of a 170?
23.62 metres
Where is the Door Reservoir Isolation Cock on the 170?
There is no DRIC as no door reservoir
What indications will you get if TCCB tripped on 170?
Brake application, train fault light flashes.
Front cab- hazard light, passcom alarm, door interlock lost
Rear cab- local fault light, lose door control on that vehicle.
What is the prep time on a 170?
15 minutes.
Does compressor speed up being on affect brakes on 170?
No because Push and hold button
Is there a transmission reservoir on 170?
No as no Marton Air Box
Where is the TCA test button located?
Behind driver in locked cupboard
What is a level 3 fault and how would you identify this?
Historic fault- flashes red with key out
Should you leave your key in when fault finding & why?
Yes, otherwise it will show a level 3 fault. Ask guard to remain in cab in case unit rolls.
What is unique about the middle car of a 170?
No TCA, no sand, no toilet
When applying sand manually, how many seconds of sand do you get and what power notch must you be in?
10 seconds of sand in any power notch.
What is the effect if LCCB tripped on 170?
Engine shuts down, loss of speedo, will still have power.
What are the differences with hazard lights on 170?
No Hazard light if BCCB tripped but you will get a hazard light if TCCB tripped.
What are the differences on TW4 on the 170?
Shore supply sits on TW4
