Refrigeration Management Mid Term LATEST VERSION 2023.

Refrigeration Management Mid Term LATEST VERSION 2023.All appliances must be equipped with the service aperture or other device which is used when adding or removing refrigerant from the appliance. What is typically used on small appliances? A) small appliances are exempt from this requirement B) a valve installed at the factory which has a 1/4" diameter and machine treads C) a line located 15" below the compressor D) a straight piece of tubing that is entered using a piercing valve - ANSWERD Which of the following best describe low loss fittings on refrigerant recovery devices used to recover CFC, HFC, and HCFC? 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 recovery device to an appliance and leak only small amounts of refrigerant during use C) they are used to connect the recovery device to and appliance and must be discarded after each use D) they eliminate oil loss during recovery - ANSWERA Any person who opens an appliance containing a CFC, FCFC or HFC for maintenance, service or repair must have at least one self contained recovery machine available for use. The exception to this rule are persons working on A) Small appliances B) low pressure appliances C) high pressure appliances D) very high pressure appliances - ANSWERA new household refrigerators may be factory charged with any of the following refrigerants, except: A) R-404A B) R-600a C) R-450A D) R-290 - ANSWERC