Jump to content
Attention: In order to reply to messages, create topics, have access to other features of the community you must sign up for an account.

Exhaustion sound


CTK246

Recommended Posts

Why do trains make a loud exhaustion sound when they arrive at the terminal?

 

Train brakes going into emergency so they can be recharged again at the other end for movement in the opposite direction. Also to change operators at relay locations (Utica, Continental, 179, Parkchester, Church, Chambers)

 

Notable places this does not happen - Euclid where the arriving crew does the relay for N/B service (unless train is a layup and said crew isn't responsible for taking it to Pitkin or wherever) and crew change occurs on the n/b end (train dumps in the relay to change direction and again on the n/b plat to change crews), and at Continental where arriving and departing (R) trains do not have to "dump" the train to change operators (R46 only, train dumps in the relay to change directions). R46 only has to be dumped to change direction. (M) train crews do either end of the relay so one way or another the train won't dump either.

Link to comment
Share on other sites

More specificly, it's a test of the piolt valve (deadman). Once the T/O stops the train, the MC handle is released while the brake valve or MC is in a position other then full service. If for what ever reason the handle is released but the train does not go into emergency, that train must be taken out of service.

Link to comment
Share on other sites

More specificly, it's a test of the piolt valve (deadman). Once the T/O stops the train, the MC handle is released while the brake valve or MC is in a position other then full service. If for what ever reason the handle is released but the train does not go into emergency, that train must be taken out of service.

 

Any type of emergency application will result in this, not just a pilot valve test. By rule every time the train is put in emergency it must be via the pilot valve (unless an actual emergency), but it doesn't mean every T/O does it that way.

Link to comment
Share on other sites

Any type of emergency application will result in this, not just a pilot valve test. By rule every time the train is put in emergency it must be via the pilot valve (unless an actual emergency), but it doesn't mean every T/O does it that way.

 

Yes, I am well aware of that...

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.