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

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...

R410a Certification Exam With Questions and Verified Answers...

EPA CORE EXAM When servicing an R-22 system you CANNOT - ANSWER top off the unit with R-407C Reclaimed refrigerant must be tested to meet __________________ before it can be resold. - ANSWER AHRI 700 EPA may require technicians to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate or failure to properly use the equipment may result in: - ANSWER Revocation of the technician's certification You have to leak check a ...

Evaporator Coil - ANSWER What component of an air conditioning system absorbs heat into the refrigerant Ventilation - ANSWER What does the V stand for in HVAC? Hot Surface Ignition - ANSWER What type of ignition is utilized by the furnaces in the shop? Air Conditioning - ANSWER What is the term for Refrigeration applied to the space temperature of a building? Electricity, L.P., Natural Gas - ANSWER What are the three fuels used in package heating units? Roof Top - ANSWER What is 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 ...

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...

What is typically used on small appliances as a service aperture or other device for adding or removing refrigerant? a. A straight piece of tubing that is entered using a piercing access tube. b. A line located 15 inches below the compressor. c. A valve installed at the factory which has a ¼ inch diameter and machine threads. d. A service aperture is not present because small appliances are exempt from this requirement. - answera. A straight piece of tubing that is entered using a piercing ...

What does ozone in the stratosphere above the earth consist of? - Answer- Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? - Answer- R-600a Which of the following gases is used as the baseline measurement for global warming potential? - Answer- Carbon Dioxide Which type of refrigerant typically has the lowest global warming potential? - Answer- HFO's What is the state of the refrigerant entering the compressor of a refr...

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...

What does ozone in the stratosphere above the earth consist of? Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? R-600a Which of the following gases is used as the baseline measurement for global warming potential? Carbon Dioxide Which type of refrigerant typically has the lowest global warming potential? HFO's What is the state of the refrigerant entering the compressor of a refrigeration system? L...