Mixed refrigerant should Study guides, Class notes & Summaries

Free ASE Study Guide Practice Test Questions And Answers True or False. Chlorine was found to do damage to the ozone layer? - ANS True True or False. Different refrigerants are ok to be mixed together. Pressure characteristics are a little bit different but should not matter. - ANS False. High pressure characteristics between R12 and R134a vary considerably. Will result in high head pressure and high system. A vehicle has poor air conditioning performance. The customer has added R1...

Which Refrigerants contain the most chlorine? - Answer- CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? - Answer- July 1, 1992 Which Refrigerants have the lowest zone depletion potential? - Answer- HFC's The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: - Answer- Chlorine Stratospheric ozone consists of: - Answer- Three oxygen atoms Stratospheric ozone de...

EPA Type 1 Questions & Answers 2024.What is the maximum allowable factory charge of refrigerant for Type 1 appliances using CFCs, HCFCs, or HFCs? - ANSWER 5 lbs Which of the following are included in EPA's definition of a "small appliance"? - ANSWER Products manufactured, fully charged and hermetically sealed in a factory When using a self-contained recovery device on a CFC, HCFC, or HFC system with an operating compressor, technicians must: - ANSWER either recover the refrigerant to 4 ...

Refrigeration License Review Exam Questions and Complete Solutions At the condenser refrigerant enters as - Answer: high pressure gas and leaves as high pressure liquid If you were running three compressors, - Answer: highly superheated vapor describes the state of the refrigerant leaving the third compressor the state of refrigerant as it leaves the compressor is (blank) and as it leaves the condenser is (blank) - Answer: compressor-super heated vapor condenser- warm sub-cooled li...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - correct answer Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is - correct answer Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - correct answer System dep...

On low pressure chillers, moisture typically enters the refrigerant system through - correct answer air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - correct answer 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller - correct answer ...

Are there drop-in replacements for R-12 systems? Why or why not? - Answer- No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - Answer- Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - Answer- Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? - Answer- Ternary blends are three-part mixtures wher...

RMO Final Exam Questions and Complete Solutions A standpipe system will be out of service for two days. How long should there be a fire Watch? A) The first 24 hours B) The entire time the standpipe is out of service C) The first 12 hours D)The last 12 hours of the day - Answer: The entire time the standpipe is out of service. The only refrigerant temperature chart available to a refrigerant engineer lists the temperature in degrees Celsius. If the chart indicates a Celsius temperat...

Appliance - Answer- Any device which contains and uses a Class I (chlorofluorocarbon; CFC), Class II (hydrofluorocarbon; HCFC) substance or substitute (e.g. Hydrofluorocarbon: HFC) as a refrigerant and which is used for household or commercial purposes, including any air conditioner, motor vehicle air conditioner, refrigerator, chiller, or freezer. For a system with multiple circuits, each independent circuit is considered a separate appliance. EPA interprets this definition to include all air-c...

EPA 608 Study Material Including (Core, Type 1, 2 And 3) Questions With Verified Solutions | ALREADY PASSED | LATEST REVISED UPDATE A vacum pump should be connected - ANSWER as far away from the pump as possible A high capacity vacuum pump and short, large diameter hoses will - ANSWER dramatically reduce emissions, pressure drop, and evacuation/dehydration time Ozone contains three - ANSWER oxygen atoms One chlorine atom can destroy - ANSWER 100,000 ozone molecules CFC's do ...