Recovery cylinders - Study guides, Class notes & Summaries

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 ...

EPA Certification Exam (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Graded A QUESTION A ternary blend is Answer: a three-part blend. QUESTION What type of oil does a ternary blend use? Answer: alkylbenzene QUESTION Which of the following is considered a "system-dependent" (passive) recovery? Answer: using the appliance compressor to remove refrigerant QUESTION Which of the following is considered a "self-c...

ODP test Questions and Answers 2023 Chlorofluorocarbon (CFC) refrigerants consist of: Chlorine, Fluorine, Carbon What causes a CFC molecule to break down once it reaches the upper atmosphere? Ultraviolet light The Ozone layer: Reduces ultraviolet radiation. Hydrochlorofluorocarbon (HCFC) refrigerants consists of: Hydrogen, Chlorine, Fluorine, Carbon. Which of the following refrigerants causes the least amount of damage to the ozone layer? R-134a Are there...

NFPA 10 Latest Update Rated A+ (SI) International System of Units 1 in=. mm 25.4 Approved Acceptable to the authority having jurisdiction. (AHJ) Authority Having Jurisdiction O rganization, office or individual responsible for enforcing requirements of a code or standard, or for approving equipment, materials, an installation or procedure. Shall Indicates a mandatory requirement. Should Indicates a recommendation or that which is advised but not required. Dry Chemical A po...

Why are flammable HFO refrigerants classified as A2L and not A2? - They have low flammability, being less flammable than HC refrigerants. Which of the following statements is true? - Propane cylinders for grilling contains impurities that refrigerant-grade propane does not have. Over-evacuation of a system can ________ - never occur; you can never pull too much air or other impurities from a system A system containing a flammable refrigerant must have the process tubes or service connec...

EPA Certification Exam Prep (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Grade A Q: What are 6 Type II appliances? Answer: 1.Walk-in coolers 2.Walk-in freezers 3.Reach-in refrigerators 4.Reach-in freezers 5.Residential & Commercial comfort cooling systems 6.Ice machines Q: To justify the cost increases of service to a customer, simply explain that ----- and required ---- to recover refrigerants in order to ----- and -----. Answer: you are b...

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 refrigerant is a chlorine free refrigerant? - HFC R 1...

Medical Gases Latest Update with Verified Solutions Advantages of Bulk O2 storage systems -Although initially expensive to construct, they are far less expensive over the long term -They are less prone to interruption -They eliminate the inconvenience and hazard of transporting and storing of a large number of cylinders -Bulk O2 systems regulate delivery pressures centrally, thereby eliminating the need for separate pressure-reducing valves at each outlet -Finally, bulk systems oper...

What is the maximum percent by weight that a cylinder may be filled? - ANSWER-80%. What can happen if a cylinder is overfilled? - ANSWER-Hydrostatic pressure could cause the cylinder to explode. List three methods for measuring the fill level of a recovery cylinder. - ANSWER-Floats, thermistor type sensors, and weighing scales. How often must reusable cylinders be hydrostatically tested? - ANSWER-Every five years. For safety, refrigerant chlinders should not be rusted or damaged and alwa...

November 14, 1994 - What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? Memorize it, ya'll. - 1987- Montreal Protocol July 1 1992- Violation to vent CFCs or HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and labeled by EPA AND Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg After this date recovery equipment needs to be capable of ...