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Home eLearning Electricity Module 7 - Relays, Contractors, and Starters
 

Module 7 - Relays, Contractors, and Starters

 
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Module 7 - Relays, Contractors, and Starters

For group or company purchases of RSES eLearning, please do NOT order here. Instead, contact RSES Headquarters – 800-297-5660, x.2337 (or orders@rses.org) – to ensure the best registration process and discounted prices available!

NATE CEH   3

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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

 

If you are not satisfied with this product RSES will provide you with a full refund up to 30 days after purchase. Additional terms may apply.

 
 
 
 
 
RSES is the leading education, training and certification preparation organization for HVACR professionals. RSES publishes various comprehensive industry training and reference materials in addition to delivering superior educational programs designed to benefit HVACR professionals at every stage of their careers through instructor-led training courses, online training for HVAC, educational seminars, interactive CD and DVD products, industry-related reference manuals, and helpful technical content through Service Application Manual chapters, the RSES Journal, the RSES Journal archives and feature articles, as well as web-exclusive features.

Beginning with basic theory and extending to complex troubleshooting, training courses covering refrigeration and air conditioning, heating, electricity, controls, heat pumps and safety may be conducted in a classroom environment or though self study. RSES publications may be purchased by schools, contractors, manufacturers or any other industry group wanting to conduct comprehensive training programs. Seminars covering air conditioning troubleshooting, electrical troubleshooting, compressor training, condenser training, refrigerant piping practices, DDC controls, and more are held in various cities across North America.

Select training programs offer Continuing Education Units (CEUs) and NATE Continuing Education Hours (CEHs).

In addition, RSES offers industry certification preparation materials for refrigerant handling (EPA Section 608), R-410A and North American Technician Excellence (NATE) examinations.

RSES’ monthly magazine, RSES Journal, serves HVAC contractors, service technicians, students, operations/maintenance managers, engineers and technicians who work in the residential, light commercial, commercial and institutional markets on air conditioning, warm-air heating, refrigeration, ventilation, electrical, ice machines, chillers, hydronic heating, piping, refrigeration control and energy management, building automation, indoor air quality and duct cleaning, and sheet metal fabrication equipment and/or systems.
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