Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
- Front
- Back
|
Checks on the system |
crankcase oil Compressor is set to auto Drain recievers of oil and water. Test efficiency of compressor by draining the air from recievers until compressor starts up and refills. Listen and feel for air leaks. |
|
|
Why do you drain the air recievers |
To prevent starting air explosions |
|
|
What is the cause of a start air explosion |
Oil from the compressor to the starting airline deposits an oil film in the pipes. The starting air valve is leaki g or jammed open. Hot gas may enter the starting air manifold + vapourises the oil causing a fire. High pressure + compressed air in contact with the fire may cause an explosion. |
|
|
What are the safety devices fitted on a start air line |
Flame trap: Prevents flames emitting. Fusible plug: Releases air pressure when the air temperature from the compressor is high....above 105°C. Relief valve: Opens at 10% of thr working pressure. Busting discs: Rupture when it reaches over pressure of the working pressure. Prevents start air explosions. |
