Question

type i - question # 9
which of the following best describes low loss fittings on refrigerant recovery devices used to recover cfcs, hcfcs, and hfcs?
a they can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses.
b they are used to connect the recovery device to an appliance and leak only small amounts of refrigerant during use.
c they are used to connect the recovery device to an appliance and must be discarded after each use.
d they eliminate oil loss during recovery.

Explanation:

Low - loss fittings on refrigerant recovery devices are designed to prevent refrigerant loss from hoses when disconnected. They can be manually or automatically closed. Option B is incorrect as they are meant to prevent significant refrigerant loss, not just leak small amounts. Option C is wrong as they are not discarded after each use. Option D is incorrect as they are for refrigerant loss prevention, not oil loss prevention.

Answer:

A. They can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses.