Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 9RQ
True or False: The evaporator fan motor is controlled by the defrost timer in Figure 6.18.
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Chapter 6 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 6 - Why should an air-conditioning technician learn to...Ch. 6 - Briefly explain the layout of a schematic diagram.Ch. 6 - Most schematic diagrams are made up of _____. a....Ch. 6 - Schematic diagrams break the wiring of control...Ch. 6 - Draw the symbols for the following components. a....Ch. 6 - What is the name of an appliance that is used to...Ch. 6 - What is the position of the control switch if the...Ch. 6 - Prob. 8RQCh. 6 - True or False: The evaporator fan motor is...Ch. 6 - What electrical component initiates the defrost...
Ch. 6 - The thermostat of the commercial freezer in Figure...Ch. 6 - What is the purpose of the fan switch in Figure...Ch. 6 - If the temperature in the furnace schematic shown...Ch. 6 - What is the purpose of the transformer in Figure...Ch. 6 - True or False: The system in Figure 6.28 is using...Ch. 6 - The HP and LP switches are connected in __________...Ch. 6 - The contactor is controlled by __________. a. the...Ch. 6 - With the fan switch in the on position, the indoor...Ch. 6 - The compressor and condenser fan motor start...Ch. 6 - The compressor and condenser fan motor are...Ch. 6 - Prob. 21RQCh. 6 - Prob. 22RQCh. 6 - Explain why the lockout relay coil energizes...Ch. 6 - True or False: The first- and second-stage cooling...Ch. 6 - True or False: A two-stage cooling thermostat...Ch. 6 - What is the purpose of the defrost cycle of a heat...Ch. 6 - What two factors initiate the defrost mode in the...Ch. 6 - What type of thermostat is used with the heat pump...Ch. 6 - Explain the operation of the switchover valve and...Ch. 6 - The reversing-valve solenoid is energized on the...Ch. 6 - The defrost cycle of the heat pump schematic in...Ch. 6 - What is a pump-down system and why is it used in...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardWhy is a low-voltage thermostat normally more accurate than a high-voltage thermostat?arrow_forwardWhat type of control would be used to turn a compressor off in the event of a large refrigerant leakarrow_forward
- If the compressor and condenser fan motor will not operate but the indoor fan motor is operating, what would be the probable cause of the malfunction? a. Bad contactor coil b. Bad thermostat c. Bad condenser fan motor d. Bad compressorarrow_forward9 Which of the following causes cooling in the room? a. Generator b. Absorbor c. Evaporator d. Condenserarrow_forwardWhat type of pressure switch is generally used to sense small changes in low pressure systems?arrow_forward
- Describe the method a service technician should follow when measuring the current that normally travels through a heating anticipator.arrow_forwardTrue or False: The two types of defrosts used with low-temperature fixtures are hot gas and electric defrost.arrow_forwardIdentify the various elements that might be present in a control system involving a thermostatically controlled electric heater.arrow_forward
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