Refrigeration system - Study guides, Class notes & Summaries

Acceptable Risk The average rate of loss that is considered tolerable for a given activity. Accident An unplanned event or sequence of events that results in an undesirable consequence. An occurrence where property damage, material loss, detrimental environmental impact or human injury occurs. Accidental Release An unanticipated emission of a regulated substance or other extremely hazardous substance into the ambient air. Action Items A column in the What-If/Checklist Wo...

RI Journeyman's Refrigeration License Exam Questions With Verified Solutions. The temperature scale that freezes water at 32 deg. and boils water at 212 deg. is known as the ___________ scale - answerFahrenheit The temperature scale that freezes water at 0 deg. and boils water at 100 deg. is known as the __________ scale. - answerCentigrade The definition of specific heat is _______________________ - answerthe amount of heat required to raise 1 lb of a substance 1 deg. F. The definition...

1. Before charging a new system with refrigerant, what should be done Answer:?: Pres- surize with nitrogen (classified as an inert gas) and leak 2. Which refrigerant can be used for leak detection as a trace gas and pres- surized with nitrogen Answer:?: R-22 3. What tools can you use to find general area of leaks and pinpoint leaks? a. Soap bubbles. b. Look for oil residue c. Electronic or ultrasonic leak detector will provide the general area of the leak d. Refrigerant dye Answer...

EPA 608 Type 2 Test Questions With Answers Technicians maintaining, servicing, repairing or disposing of high pressure or very high-pressure appliances, except small appliances and MVAC, must be certified either as a Universal Technician or a ______ ___. - CORRECT ANSWER Type 2 After the installation of any type of system, the unit should be pressurized with _____ and _____ checked. - CORRECT ANSWER nitrogen leak Nitrogen is an ______ gas. - CORRECT ANSWER...

EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+ 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, flouri...

Commercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsCommercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsCommercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsWhat is the first thing a technician needs to know about the system he is trying to troubleshoot? - ANSWER - How the system is supposed to operate. What are eight pieces of information needed to diagnose a system problem?...

FDNY Z51 RMO Questions and Answers 100%Verified Graded A+ already passed!! 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 - correct answer lowering the condenser pressure In most semi hermetic compressors, the suction vapor is used for - correct answer cools the motor The amount of refrigerant that flows through the orifices of an economizer is determined by the - corre...

Commercial Refrigeration Ch 11 (Walk-in System Sizing and Installation) with Complete SolutionsCommercial Refrigeration Ch 11 (Walk-in System Sizing and Installation) with Complete SolutionsCommercial Refrigeration Ch 11 (Walk-in System Sizing and Installation) with Complete SolutionsCommercial Refrigeration Ch 11 (Walk-in System Sizing and Installation) with Complete Solutions Four inches of urethane insulation is equivalent to how many inches fiberglass insulation? - ANSWER - 10 inches Why...

EPA 608 universal with correct Answers Refrigeration technicians who violate the Clean Air Act can: - After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - Refrigerant that is recovered can be returned to: Refrigerant can not be called "reclaimed" unless it: - . The EPA can require a technician to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can re...

Commercial Heating and Cooling-(Unit 37 Management of Refrigerants and Refrigeration systems) with Complete SolutionsCommercial Heating and Cooling-(Unit 37 Management of Refrigerants and Refrigeration systems) with Complete SolutionsCommercial Heating and Cooling-(Unit 37 Management of Refrigerants and Refrigeration systems) with Complete Solutions high-pressure appliance - ANSWER - A refrigeration or air conditioning system that has a refrigerant charge over 5 lb, has a boiling point between ...