R 410a safety - Study guides, Class notes & Summaries

RAC 40 Quiz 6 Review | Latest Version | 2024/2025 | Graded A+ What is the primary purpose of the refrigerant in a cooling system? To absorb heat from the environment and transfer it elsewhere. What safety precaution should be taken when handling refrigerants? Always wear protective gloves and goggles to prevent skin and eye exposure. Why is it important to monitor refrigerant levels in a system? To ensure efficient operation and prevent compressor damage due to low refrigerant. ...

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

A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - System dependent Always _____________ when connecting or disconnecting refrigeration hoses. - 1.) wear safety eyewear and butyl-lined gloves 2.) verify the hoses are rated for the refrigerant being used 3.) avoid trapping liquid refrigerant in the hoses To reach the necessary recovery level, when using a ________, it will most likely be essential t...

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 ...

EPA 608 Practice Exam Type 1 Questions and Answers | Latest Version | 2024/2025 | 100% Pass What must be done with refrigerant released from the top of a charging cylinder? It must be captured and not vented. When should you not start recovering refrigerant from a system? If the system pressure is at 0 psig. What is the pressure inside an R-410A cylinder at 100°F? 319 psig. What might be necessary when using a passive recovery device on a non-operational compressor in a sma...

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 ...

Refrigeration technicians who violate the Clean Air Act can: - - Answer Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - Answer recovery and recycling. Refrigerant that is recovered can be returned to: - - Answer the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: - . - A...

HVAC CONTRACTOR EXAM COMPLETE SOLUTIONS An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter ️voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve ️thermostatic expansion valve when installing a re...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - correct answer Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is - correct answer Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - correct answer System dep...