Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 55, Problem 8RQ
To charge an air-conditioning system while it is run ning, the refrigerant should be added to.
- the high side
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Chapter 55 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 55 - What should you do if you suspect that an...Ch. 55 - Explain how dye can be used to find leaks in the...Ch. 55 - What is the purpose of the thermostatic switch in...Ch. 55 - Why should the probe of an electronic leak...Ch. 55 - How will air trapped in the A7C system affect...Ch. 55 - Which of the following statements best defines the...Ch. 55 - Which of the following statements is not true...Ch. 55 - To charge an air-conditioning system while it is...Ch. 55 - All of the following are true statements about...Ch. 55 - A very important part of a performance test on an...
Ch. 55 - While conducting a pressure test on an A/C system,...Ch. 55 - The high-side pressure on a system with a cycling...Ch. 55 - When checking an A/C system, the evaporators inlet...Ch. 55 - All of these are good reasons for replacing an...Ch. 55 - In an AZC system, if the low-side pressure is...Ch. 55 - Technician A says that evacuating (pumping down)...Ch. 55 - Technician A says that some refrigerant leaks can...Ch. 55 - Technician A says that the presence of oil around...Ch. 55 - Technician A says that a faulty accumulator will...Ch. 55 - Technician A says that air in the system can cause...Ch. 55 - Technician A feels up and down the face or along...Ch. 55 - Technician A says that a manifold gauge set can be...Ch. 55 - While discussing an inoperative blend air door:...Ch. 55 - Two technicians were discussing how comparing the...Ch. 55 - While conducting an A/C system performance test:...
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- Which of the following should be turned off while working on the compressor circuit? A. The indoor unit fan B. The unit disconnect C. The thermostat D. The main power supply to the buildingarrow_forwardWhile discussing the operation of air-conditioning systems: Technician A says that in order for the refrigerant to release heat, it must be at a low temperature and pressure. Technician B says that in order for the refrigerant to absorb heat, it must be at a high temperature and pressure. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhich of the following statements best defines the term evacuation? A process in which the refrigerant in a system is released. A condition that exists when a compressor runs until there is no refrigerant left in the system. The process that pulls all traces of air and moisture from the system. A process that uses air to force moisture and dirt out of the system.arrow_forward
- What are the three components that have to operate when a residential air conditioning system i the cooling modearrow_forwardHow does the process of elimination play a part in troubleshooting an air-conditioning systemarrow_forward9 Which of the following causes cooling in the room? a. Generator b. Absorbor c. Evaporator d. Condenserarrow_forward
- On most residential air conditioning units, the condensing fan motor is controlled by? a. Transformer b. High pressure safety switch c. Compressor contactor d. Indoor fan relayarrow_forwardWhat lubricates the refrigeration compressor? A. Refrigerant B. Moisture C. Desiccants D. Oilarrow_forwardTrue or False: A vacuum pump can remove any type of foreign matter that enters a refrigeration system.arrow_forward
- In an AZC system, if the low-side pressure is lower than normal, which of the following is the least likely cause? A faulty metering device Poor airflow across the evaporator A restriction in the low side of the system The system being overcharged with refrigerantarrow_forwardTrue or False: The two types of defrosts used with low-temperature fixtures are hot gas and electric defrost.arrow_forwardIf the thermostat contacts are closed the compressor and the condenser fan motor are not operating, and all the other loads are operating properly, which might be the problem? A. A bad high pressure safety switch. B. A bad low pressure switch C. Both A. and B. D. A bad thermostatarrow_forward
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