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Module 7 - Relays, Contractors, and Starters

 
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Module 7 - Relays, Contractors, and Starters

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NATE CEH   3

Price: $60.00

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Relays, Contactors and Starters

Description:

Explanation of troubleshooting techniques for relays, contactors, and starters used in the HVACR field

Upon the completion of this module, you will understand how to:

1. Describe the basic components of a relay.
2. Identify the four common faults you may encounter when working with relays.
3. Explain the procedure for testing pilot-duty relays.
4. Describe the features of a line-duty relay.
5. Explain the procedure for testing line-duty relays.
6. Describe the features of a contactor.
7. Explain the procedure for testing contactors.
8. Describe the features of a starter and a potential relay.
9. Explain the procedure for testing starters and potential relays.
10. Describe the features of current relays and time-delay relays.
11. Explain the procedure for testing current relays and time-delay relays.

Topic 1: Relays

* Topic Introduction and Objectives
* Basic Components of a Relay
* Common Faults
* Check-Point Question
* Topic Summary

Topic 2: Testing Pilot-Duty Relays

* Topic Introduction and Objectives
* Testing the Contacts
* Testing for an "Open" Coil
* Testing for a "Shorted" Coil
* Calculating Current Draw of Pilot-Duty Relay
* Check-Point Question
* Topic Summary

Topic 3: Testing Line-Duty Relays

* Topic Introduction and Objectives
* Features of a Line-Duty Relay
* Testing the Contacts
* Testing for an "Open" Coil
* Testing for a "Shorted" Coil
* Check-Point Question
* Topic Summary

Topic 4: Contactors

* Topic Introduction and Objectives
* Features of a Contactor
* When to Replace a Contactor
* Testing Contactors
* Testing the Contacts
* Testing for an "Open" Coil
* Testing for a "Shorted" Coil
* Check-Point Question
* Topic Summary

Topic 5: Starters and Potential Relays

* Topic Introduction and Objectives
* Features of a Starter
* Testing Magnetic Starters
* Check-Point Question
* Potential Relays
* Potential Relays: Connecting the Terminals
* Testing a Potential Relay
* Testing the Coil of a Potential Relay
* Using a Relay Tester
* Testing the Relay in Operation
* Check-Point Question
* Check-Point Question
* Topic Summary

Topic 6: Current Relays and Time-Delay Relays

* Topic Introduction and Objectives
* Features of a Current Relay
* Connecting the Terminals on a Current Relay
* Testing Current Relays
* Features of a Time-Delay Relay
* Testing a Delay-On-Make Relay
* Testing a Delay-On-Break Relay
* Check-Point Question
* Check-Point Question
* Topic Summary
* Assessment

 

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