Refrigerant 410a - Study guides, Class notes & Summaries

EPA SECTION 608 CORE (2021-2022 revision) A disposable cylinder should be reduced to what pressure before scrapping? a. 0 psig b. 20 psig c. 50 psig d. 80 psig A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? a. Add R-22 after the repair is complete. b. Retrofit the unit to R-407C. c. Use recovered or recycled R-22 from the same owner. d. Top off the unit with R-410a. A refillable cylinder must not be filled above what ...

EPA 608 (TYPE II) Exam COMPLETE SOLUTION ( A+ GRADED 100% VERIFIED) When a new system has been assembled, the first thing to do is? - ANS Pressurize the system with an inert gas & leak check. After installation of a field-piped R-410A split heat pulp, the unit should first be? - ANS Pressurized with nitrogen then leak checked. The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except for commercial & industrial process refrigeration) mus...

EPA 608 Type 3 Questions and Answers Already Passed On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... A hydrostatic tube test kit is used to: determine if a tube leaks Commercial and industrial process refrigeration systems must be rep...

When a new system has been assembled, the first thing to do is? ans Pressurize the system with an inert gas & leak check. After installation of a field-piped R-410A split heat pulp, the unit should first be? ans Pressurized with nitrogen then leak checked. The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except for commercial & industrial process refrigeration) must be repaired when the leak rate exceeds _________ of the charge per ...

-Suva 410a -AZ-20 -Puron - Answer R-410a is also known as? 0.3 - Answer The temperature glide for R-410a is less than _____ degrees Fahrenheit over air conditioning and refrigeration operating ranges. -Can be irritating to the skin -Is hydroscopic -Has improved heat transfer characteristics over mineral oils - Answer Polyol Ester (POE): 50 psig - Answer The low pressure control on R-410a systems will open at: Absolute discharge pressure divided by absolute suction pre...

EPA 608 Type 1 Questions and Answers 100% Pass Recovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after November 15, 1993 Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of: recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993 EPA's definition of...

EPA 608 Type 2 certification Exam Questions with Verified Answers . When a new system has been assembled, the first thing to do is? Pressurize the system with an inert gas & leak check. After installation of a field-piped R-410A split heat pulp, the unit should first be? Pressurized with nitrogen then leak checked. The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except for commercial & industrial process refrigeration) must be repaired when ...

HVAC UNIT 3 REVIEW TEST WITH COMPLETE SOLUTIONS Ice melts in ice boxes because a. heat flows through the insulated walls. b. heat flows through the doorway when it is opened. c. heat is moved into the box when warm food is placed in it. d. All of the above. D High-temperature refrigeration is that produced by a. heat from a furnace. b. an air-conditioning system, c. the vegetable cooling system of a refrigerator. d. the freezer section of a refrigerator. B A ton of refrigerat...

EPA Certification Exam (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION 1 What should a technician do if they discover that some R-410A was added to an R-22 system? Answer: Recover the mixture in a separate recovery tank. QUESTION What factor does NOT affect the speed of evacuation? Answer: The brand of micron gauge used. QUESTION Which of the following is NOT a recommended safety practice when operating refrigerant ...