The fluid circulating within the refrigeration system includes the _____, and __
ID: 2080034 • Letter: T
Question
The fluid circulating within the refrigeration system includes the _____, and _____, any other substances are considered to be non-condensable which will raise the discharge pressure. The best system pressure test is a standing pressure test, which is normally _____ PSIG. Vapors will be _____ out by the vacuum pump; liquids must _____ to be removed with a vacuum pump. True or false: A vacuum pump can remove any type of foreign matter that enters a refrigeration system. Why is it a good practice to remove Schrader cores from the service valves prior to evacuation? Dry-nitrogen is considered a non-condensable because it will not condense in to a liquid; yet we use it to pressurize the refrigeration system to check for leak. Why is this acceptable? When checking for leaks on a 410 A refrigeration system can you use nitrogen with a trace of R22 to pressurize the system? Yes No Explain: List three negative results that can be expected when evacuating a system that still has a leak? _____ _____ _____ Give two indications that a leak is still present when evacuation is in progress. _____ _____ List three substances when combine will produce sludge in a refrigeration system.Explanation / Answer
1. The fluids circulating within the refregeneration system includes temperature and pressure and any other substances are considered to be non condensible which will raise the discharge pressure .
2. The best system pressure test is standing pressure test which is at PSIG.
3.vapours must be exhausted out by the vaccum pump, liquids must instantaneously removed by the vaccum pump.
4. True