Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 19, Problem 5RQ
To determine
The difference between a contractor and a starter.
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Which of the following is not part of the starter motor circuit?
When the starter spins but does not crank the engine,which of the following may be true?a. Defective starter relayb. Damaged flywheel teethc. A faulty starter solenoidd. All of the above
State four advantages of a pre-engaged starter when compared with an inertia type.
Chapter 19 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
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- A push button manual starter has tripped on overload. Explain how to reset the starter so themotor can be restarted.arrow_forwardTo answer the following questions refer to the circuit in Figure 416. When the pressure switch closes, which starter will energize first, 1M or 2M? Explain your answer.arrow_forwardExplain the difference between manual motor starters that provide low voltage release and those that do not.arrow_forward
- How do you check for an open armature winding?arrow_forwardA manual motor starter controls a single phase 120 volt motor. The motor is not running, and theswitch handle on the starter is found to be in thecenter position. What does this indicate?arrow_forwardQuestion 5: Explain what happens if it is operated without a starting rheostat; What else is used instead of the starter rheostat and how is the speed adjustment done in D.C series motor? Explain.arrow_forward
- Assume that when the start button is pressed M starter does not energize. List seven possible causes for this problem?arrow_forwardRefer to the schematic diagram in Figure 318. Assume that the motor is not running. When the third speed push button is pressed, the motor starts in its lowest speed. After a delay of 3 seconds, the motor accelerates to second speed and 3 seconds later to third speed. After a period of about 1 minute, the fourth speed push button is pressed, but the motor does not accelerate to fourth speed. Which of the following could cause this problem? a. Control relay CR2 coil is open. b. S2 contactor coil is open. c. CR3 coil is shorted. d. S3 contactor coil is open.arrow_forwardWhat is the minimum size IEC starter rated for the motor described in question 11?arrow_forward
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