Mixed refrigerant should - Study guides, Class notes & Summaries

EPA 608 Type I - Questions and Answers Which of the following is not a Type I appliance? a) An MVAC-like system that holds three pounds of R-12 b) A water cooler that holds 13 ounces of R-12 c) A food freezer that holds 22 ounces of R-22 d) A dehumidifier with 7 ounces of R-500 When transporting refrigerants, DOT (Department of Transportation) Regulation number 49 CFR requires _________ to be recorded on the shipping papers for hazard class 2.2, Nonflammable Compressed Gases. a) volume of each ...

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 ...

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 ...

Heat flow, Heat absorption, Pressure and Boiling Points On which of the following laws of nature is the air-conditioning system based? D. None of these answers are correct Which of the following statements is not correct? A. Refrigerant leaves the compressor as a high-pressure, high-temperature liquid. B. Refrigerant leaves the condenser as a low-pressure, high-temperature liquid. C. Refrigerant returns to the compressor as a low-pressure, high-temperature vapor. D. None of these an...

NATE Light Commercial Exam Questions with Correct Answers Graded A+ Which of the following measurements would be needed to determine oil furnace combustion efficiency? a. net stack temperature and CO2 concentration b. net stack temperature and CO concentration c. stack temperature and indoor temperature d. stack temperature and fuel pressure -Ans a. net stack temperature and CO2 concentration When combustion is being tested on an oil furnace, high level of smoke and can be corrected ...

EPA 608 CORE QUESTIONS AND ANSWERS 2023 What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? Dont disolve iin water Each chlorine atom in the stratosphere can destroy how many ozone molecules? 100,000 ozone molecules Which refrigerant contains a CFC? R500, R12, R113 or R11? Theyre all CFC's HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? Hydrogen, chlorine, flourine and carbon Which ...

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...

the state of the refrigerant entering the metering device is? - Answer- A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? - Answer- R-503 what type of refrigerant is used in MEDIUM pressure appliances? - Answer- R-500 what type of refrigerant is used in HIGH pressure appliances? - Answer- R-410A and R-22 what device is located at the END of the liquid line? - Answer- The expansion device. what type of refrigerants are the LEAST ha...

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...

NYC - Final RMO Exam Questions and Complete Solutions The efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from a. Raising the condenser liquid level to the maximum b. lowering the chilled water set point. c. raising the condenser head pressure d. lowering the condenser pressure - Answer: Lowering the condensing pressure The heat removed from the refrigerant in a condenser is ...