Lab Manual for Smith's Electricity for Refrigeration, Heating, and Air Conditioning, 9th
Lab Manual for Smith's Electricity for Refrigeration, Heating, and Air Conditioning, 9th
9th Edition
ISBN: 9781285180014
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 5, Problem 13RQ

Identify the following symbols for switches:

Chapter 5, Problem 13RQ, Identify the following symbols for switches:









 , example  1

Chapter 5, Problem 13RQ, Identify the following symbols for switches:









 , example  2

Chapter 5, Problem 13RQ, Identify the following symbols for switches:









 , example  3

Chapter 5, Problem 13RQ, Identify the following symbols for switches:









 , example  4

Chapter 5, Problem 13RQ, Identify the following symbols for switches:









 , example  5

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Name Section 5-2: Line Diagrams-Signals, Decisions, and Actions In the following application, a temperature switch controls a heating contactor and a flow switch is used to ensure there is enough air flow. If there is not enough air flow, an alarm is sounded. Complete the required information. 1. List all the signal devices in the circuit. 2. List all the action devices in the circuit. 3. List the decision part of the circuit that automatically sounds the alarm if there is a problem. 4. When the heating element is on during normal operation, is the flow switch open or closed? CIRCULATING 2 L1 FAN TEMPERATURE SWITCH TR HEATING ELEMENTS FLOW SWITCH -HOT AIR PADDLE AIR FILTER NORMALLY CLOSED FLOW SWITCH 65 ALARM (SOUNDS IF NO FLOW FOR 15 SECONDS OR MORE) Date HEATING CONTACTOR TR ON-DELAY TIMER SUPPLY AIR COLD AIR (3) TIME SET= 15 SEC © 2014 American Technical Publishers, Inc. All rights reserved

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Lab Manual for Smith's Electricity for Refrigeration, Heating, and Air Conditioning, 9th

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