Comeng Underframe Equipment Flashcards
What wheels are the Spring Park Brakes?
Odd numbers of motor cars only
How many motors per bogie
2
How many traction motors per motor
4
What are the 2 braking systems used on comeng fleet??
Westcode
Knorr
What applies the SPB?
Spring
What releases the SPB?
Main Res Air
On which wheels is there a Frequency Generator?
All Odd numbered wheels
What is the purpose of the Frequency Generator?
Monitors & Corrects wheel spin slide event in low adhesion conditions
What operates the speedometer and on which wheel is it located ?
Speedo Generator Box
Wheel 8 of motor car
What brakes does a Westcode use?
Westinghouse Electro pneumatic
Auto Air brake - tread brakes (brake blocks applied via air pressure in brake cylinders)
What brakes does a knorr use?
Disc brakes
Via relay signal (either pneumatic or electric- dependent on EP circuit breaker)
Where is the trip located?
In advance if Wheel 8 of motor
What 3 isolation cocks are below drivers cab?
RED EC
TECH AV
Main Res to Brake Controller
What is the Primary safety equipment?
(TECHAV)
Trip
Emergency Application Valve
Control Governor
Hand Pilot Valve
Anti- Neutralisation Device
VICERS activation Valve
What must be used when the RED EC cock is isolated (run on 2nd Circuit)?
Foot pilot valve
Control governor bypass button
(VICERS has to be isolated also)
What is the Yellow TECHAV cock used for?
To isolate the safety apparatus on a trailing motor when it is defective
What is the purpose of the MR to BC cock?
When open it allows MR air flow into the Brake Controller to operate the Air Brake
(Closed when faulty or for repairs)
How are 2 trains automatically coupled when eased up together?
Electrically
Pneumatically
Mechanically
What position is the the painted indicator be in on top of the couple when it is coupled?
In-line
Where is the I.C for the whistle located?
In the driver’s cab
What are the 2 small storage reservoirs under A side of the drivers cab?
Equalizing Res (closer to driver)
Panto storage Res (next to transition coupler)
What is the purpose of the Equalising Res?
Part if the brake controller equipment
Allows the Brake Pipe to be charged
What is the purpose of the panto Res?
Supplies compressed air to raise panto when no main res is available
Where are the Air suspension I.C no 1 located ?
Westcode ?
Knorr?
W - A side no. 1 end
above between wheels 1 & 2
K - B side no. 1 end
above between wheels 7 & 8
• Isolates flow of MR air to Air Suspension system
Where are the SPB Iso cocks located?
A side no. 1 end- wheel 2
B side no. 2 end- wheel 6
Where are air suspension no. 2 I.C located?
Above wheel 5, B side no.2 end
What must be operational for the air compressor to run?
What power does it run on?
A motor alternator must be working for the air compressor to run
Air compressor runs on 1500vDC
What does the control Riz supply compressed air to?
Supplies air to operate the electropneumatic valves in the main equipment case (to close line breakers)
Trip
Where is the wheel Slip unit located? How do we know it is energized?
Has a green light can only be viewed from A side
What does the compressor governor I.C. do?
Isolates flow of main res, air pressure to the compressor governor if it becomes defective