Understanding Motor Controls
Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 41, Problem 15RQ

To answer the following questions refer to the circuit shown in Figure 41–14.

Assume that contact TS1 closes and the air injection blower motor starts operating, but the high-pressure pump motor does not start. What could cause this problem?

  1. a. Temperature switch TS3 is open.
  2. b. Coil 2M is open.
  3. c. Flow switch FL1 is defective and did not close.
  4. d. Coil TR is open.
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