Study guides, Class notes & Summaries

Unit 15 Troubleshooting Basic Controls Test 2023/2024.1. Name three types of automatic controls. - ANSWER Thermostat, fan limit switch, and high/low pressure controls. 2. Two categories of electric controls are - ANSWER Power consuming and power passing. 3. What circuit is energized with the thermostat Y circuit? - ANSWER The cooling relay coil. 4. The component in the system that is energized when the G terminal is energized is the - ANSWER Indoor fan relay coil. 5. The ______ termi...

HVAC Final Exam 2023/2024. Heat Transfer - ANSWER Moves from one substance to another as well as between molecules of a substance, temperature is the driving force Temperature - ANSWER The level of heat or heat intensity, measured with thermometers Heat - ANSWER Is the motion of molecules, and travels from a warm substance to a cold substance Conduction - ANSWER Energy travelling from one molecule to another, involves direct contact Radiation - ANSWER Passes through air and heats th...

Class C Water Operator License Test 2023/2024.Ammonia mixed with chlorine gas creates a - ANSWER white smoke The most difficult part of a water distribution operator's job. - ANSWER furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - ANSWER cross connection A distribution system is a - ANSWER looped system Dead end mains should be flushed - ANSWER every month Excess nitrate causes a condition called - ANSWER blue baby syndrome ...

Refrigeration Management Mid Term Exam 2023/2024. All appliances must be equipped with the service aperture or other device which is used when adding or removing refrigerant from the appliance. What is typically used on small appliances? A) small appliances are exempt from this requirement B) a valve installed at the factory which has a 1/4" diameter and machine treads C) a line located 15" below the compressor D) a straight piece of tubing that is entered using a piercing valve - ANSWER ...

EPA Type III Practice Test 2023/2024.Under ASHRAE Standard 34, R-134a is classified as - ANSWER A1 When pressurizing a low-pressure system for leak-detection purposes, do not exceed - ANSWER 10 psig The most efficient method of leak checking a charged low-pressure refrigeration unit is to - ANSWER pressurize the system using controlled hot water or heater blankets What type of equipment can be worked on with Type III certification - ANSWER Low-pressure Which of the following best des...

Type I VTI Pt3 Questions And Answers 2023/2023. Which of the following are included in EPA's definition of a "small appliance?" - ANSWER Products fully manufactured, charged and hermetically sealed in a factory. Which of the following is an approved substitute refrigerant for new household refrigerators, freezers and combination refrigeration/freezers? - ANSWER R-600a Recovery devices for use with small appliances containing CFCs, HCFCs, and HFCs must meet which of the following requir...

EPA: CORE 185 QUESTION PRACTICE Guide 2023/2024.Which ASHRAE classification means slightly flammable? a.) A1 b.) A2L c.) A3 d.) B1 - ANSWER b.) A2L What is the Significant New Alternatives Policy (SNAP) Program? a.) EPA's program that identifies refrigerants with lower overall risks to human health and the environment. b.) Covers only CFC and HCFC refrigerants used in residential air conditioning. c.) Relates to CFC and HCFC refrigerants used in commercial air conditioning. ...

EPA 608 Certification, EPA 608 Exam 2023/2024. November 14, 1994 - ANSWER What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? Memorize it, ya'll. - ANSWER 1989- 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 ...

EPA 608 Certification Core Practice Questions 2023/2024. As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? - ANSWER July 1, 1992. What is the ozone layer and why is it important to us on Earth? - ANSWER Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth. The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is? - ...

Trade Terms Quiz - Module 1 Questions 2023/2024.Lockout/Tagout - ANSWER The formal procedure for taking equipment out of service and ensuring it cannot be operated until an authorized person has returned it to service is _______. Excavation - ANSWER A(n) ___________ is any man-made cut, cavity, trench, or depression in an earth surface, formed by removing earth. Competent person - ANSWER A(n) _____________ identifies unsanitary, hazardous, or dangerous working conditions and has the author...