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Refrigeration machine operator

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Unit 37 Management of Refrigerants and Refrigeration Systems Exam Questions with Correct Answers

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    Unit 37 Management of Refrigerants and Refrigeration Systems Exam Questions with Correct Answers

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    2024/2025
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  • Section _____ , National Recycling and Emissions Reduction Program, of the Clean Air Act of 1990 requires management of refrigerants and refrigeration systems to maximize recovery and recycling of ozone-depleting substances during the servicing and disposal of air conditioning and refrigeration equip-ment. - Answer-608 What does EPA stand for? - Answer-Environmental Protection Agency The EPA is responsible for establishing and enforcing Section 608, which was created for the protection of ...
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Commercial Refrigeration FINAL TEST Exam Questions with Complete Solutions

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    Commercial Refrigeration FINAL TEST Exam Questions with Complete Solutions

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  • How is the cooling effect in a mechanical refrigeration system produced? - Answer-Evaporation of liquid refrigerant into vapor What is the primary purpose of a compressor? - Answer-It circulates and pressurizes the refrigerant vapor before the vapor Is condensed for re use Name another function that must be performed by the compressor - Answer-Is raise the pressure and temperature of the refrigerant vapor. This allows the refrigerant to condense into a liquid as it circulates through the c...
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Refrigeration and Airconditioning Exam Questions with Correct Answers

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    Refrigeration and Airconditioning Exam Questions with Correct Answers

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    2024/2025
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  • refrigeration - Answer-A branch of science that deals with process of cooling of a space or substance below the environmental temperature. refrigeration system - Answer-An assembly of four major components, namely the compressor, condenser, expansion valve, evaporator through which a very low boiling point substance flow in a cycle and absorbs heat from the immediate surroundings, thereby producing the cooling effect. refrigeration cycle - Answer-A sequence of thermodynamic processes where...
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Refrigeration test Exam Questions with Complete Solutions

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    Refrigeration test Exam Questions with Complete Solutions

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  • What is considered a normal box temperature of a walk-in refrigerator - Answer-35-38F What is considered a normal box temperature for a reach in refrigerator - Answer-38-40F What is considered a normal box temperature of a walk-in freezer - Answer--10F What is considered a normal box temperature for a reach in freezer - Answer-0 degrees Fahrenheit How can latent heat in a suction line be transferred to a higher outdoor temperature - Answer-Compress the suction vapor until its condens...
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Refrigeration Final Exam Questions with Verified Answers

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    Refrigeration Final Exam Questions with Verified Answers

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    7
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    2024/2025
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  • What is the normal box temp on a medium temp walk in refrigerator - Answer-35 to 37 degrees What is the temp for reach ins - Answer-38 to 40 degrees What is the temp on walk in Freezers - Answer--10 degrees What is the temp on a reach in Freezer - Answer-0 degrees What is the normal evaporator TD for a Reach in refrigerator or freezer - Answer-20 degrees. (40 box - 20 evap =20) What is the normal evap TD for a walk in refrigerator or Freezer - Answer-20 degrees (35 box - 25 evap =...
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EPA 608 Exam Questions with Correct Answers

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    EPA 608 Exam Questions with Correct Answers

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    2024/2025
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  • What should a service technician do if they lose their EPA certification card? - Answer-Request a new card from the certifying organization What type of synthetic oils are commonly used in new HFC systems and for retrofitting HCFC equipment to HFC refrigerants? - Answer-Polyolester Which of the following is NOT a violation of the refrigerant management regulations under the clean air act? - Answer-Servicing a system the uses CFC's or HCFC's after the phaseout of those refrigerants Wha...
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NJ Refrigeration Blue Seal 2-C Exam Questions and Answers

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    NJ Refrigeration Blue Seal 2-C Exam Questions and Answers

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  • Name the 4 steps of a mechanical refrigeration system - Answer-evaporation, expansion, compression, & condensation Name the 4 parts of a refrigeration system - Answer-compressor, condenser, receiver, & evaporator Name the 3 methods of heat transfer - Answer-conduction, convection, & radiation What type of heat increases temp, but the state remains the same? - Answer-sensible heat 600,000 BTU/HR = ____ tons of refrigeration? - Answer-50 How many tons of refrigerant is req'd to pre...
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Meeting 5 EPA Quiz SEC. 5-6 Exam Questions and Answers

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    Meeting 5 EPA Quiz SEC. 5-6 Exam Questions and Answers

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  • true - Answer-one-trip refrigerant cylinders cannot be refilled under any circumstances true - Answer-if a recovery tank is empty and at atmospheric pressure, it is recommended that the tank be turned upside down with the vapor valve open false - Answer-cylinders of compressed gasses shall be transported in a horizontal position, unless packed in boxes or crates of such size as to prevent their overturning, or unless loaded into suitably secured racks, or otherwise secured in an upright po...
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Refrigeration License Written Test Study Material #2 Exam Questions and Answers

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    Refrigeration License Written Test Study Material #2 Exam Questions and Answers

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    3
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  • What may be the cause of compressor knocking? - Answer-Liquid refrigerant slugging in the compressor. What will happen if the Spring on the TEV was to break ? - Answer-Flood the evaporator and raise suction pressure. What happens in the TEV equalizer line when pressure drops in the evaporator ? - Answer-The TEV equalizer compensates for the loss in pressure. What is the function of the Service Valve Stem Cap ? - Answer-To protect the valve from leaking the refrigerant. What is the pr...
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HVAC Unit 25 Special Refrigeration System Components Review Exam Questions and Answers

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    HVAC Unit 25 Special Refrigeration System Components Review Exam Questions and Answers

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  • Which is not a basic component of the compression refrigeration cycle? - Answer-D) Suction Filter pg 509 Describe modulating fluid flow - Answer-Modulating fluid flow is throttling the amount of fluid through a gas line. Controlling the flow between maximum or no flow. pg 510 The purpose of the crankcase pressure-regulating valve is to - Answer-D) prevent a compressor overload condition pg 513 Describe the function of the electric evaporator pressure-regulating valve (EEPR) - Answer-The...
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