Extra Comeng Fault Flashcards
Which items are connected to the PLC?
Shut fucking door door door
• Secondary Release Feature
• Foot Pilot Valve
• Drivers Door Indicator Lights
• Door Closing Delay Relay
• Door Chimes
If the Control Reservoir is ruptured, which isolating cock must be placed to the isolate position?
Control Reservoir In Isolating Cock
What is the Main Res Operating range?
585 - 725
What are the six things fault Warning notice books are used for?
What are the Whistle Failure speeds in service?
Cautiously at reduced speed 15km/h through yards, stations or near employees/persons working on or near the line
What are the components of the brake controller?
CLERRR
Charging Valve, Lock out magnet valve, Emergency Exhaust, Relay valve, Release prevention, Regulating Valve
What does the Charging Valve do?
Charges the brake pipe
What does the Lock out magnet valve do when energised?
Prevents simultaneous application of auto air brake and EP brake
What does the Lock out magnet valve do when de-energised?
Super brake
What is the Brake unit made up of?
Seems Very Hard Remembering What Brakes Really Do Right now
Seven step Relay, Variable Load, Hand Release, Restricted Application Limiting Ball check, WERP triple, By pass check, Release ensuring, Dump valve
What does restricted application limiting valve and ball check valve do?
Allows a 10% increase in brake cylinder pressure when using air brake.
What does restricted application magnet valve do?
Prevents the simultaneous application of the EP brake while Reostatic braking
What does release ensuring valve do?
Removes 14 KPA from auxiliary res when in run & release
What does LSM stand for?
Loss of overhead shutdown module
The LSM on a Comeng EMU performs what 4 functions when a train is running?
• Detect a reduction of DC Voltage
• Stop remote Motor Alternators
• Lower Remote Pantographs if the train is travelling less than 8 km/h
• Trips an EP circuit breaker changing to automatic air brake if there is a total loss of power.
What valve provides for extra braking force when moving from Step 7 of EP braking to Emergency?
Restricted Application Limiting Valve & Ball and Check Valve
How does a driver rectify a ruptured Main Reservoir tank?
• Close MR Delivery IC
• Place Compressor Contactor ISO Switch to OFF
• Isolate Compressor Governor Circuit Breaker
What steps does a driver have to take when dealing with a rupture in the Control Reservoir system?
• The Control Reservoir must be isolated by turning the Control Reservoir IN isolating cock to ISOLATE
• The motor cut-out switch is to be turned to ALL OUT
• Submit TMM to TC
What can cause a Flashing Door Closed Light in a Comeng train?
• Control Circuit breaker tripped in last motor
• Rear motor marker lights
• Aux circuit breaker tripped in last motor
• PLC isolated
• Doors failing to close
• Open circuit train cable
• Train coupler not registering
• Second BVICS open
What does the Auxiliary circuit breaker protect?
Badscars
Bell
Aux Start
Doors Release
Saloon lights on & off
Couple & Uncouple
Air con # 1
Rheo
Self centring
