Cooling Systems
Air conditioners have three important parts that include a compressor, a condenser, and an evaporator. You'll learn basic repair and replacement tasks for these parts as we'll also cover ductless systems in this playlist.
Learn more about NexTech Academy's HVAC curriculum at https://www.nextechacademy.com
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Normal, Under, and Over-Charged Systems
We will show you what a system looks like when it has normal, overcharge and an undercharge of refrigerant.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Testing the Windings on a Blower Motor or Fan Motor
Understanding how to test blower motors correctly is critical. In this video, we will show you a step-by-step process of how to test the windings of a blower motor.
Learn more about NexTech Academy's HVAC curriculum at https://www.nextechacademy.com
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How to Clean a Condensate Pump
You will learn what the manufacturer requires to perform general maintenance on a condensate pump on a system in the field.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Relay Types and Operation
HVAC equipment can have many different types of relays to turn different components on and off. In this video, we will show you the different types of relays found on equipment and how they operate.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Applying Acid Neutralizer and Flush
This video will show you how to properly neutralize the acid in a refrigeration system and flush the system with an r-11 flush kit. This procedure should be done any time a system has acid in it, or when a compressor has been replaced due to a burnout.
Interested in learning more about NexTech A...
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How to Prepare and Braze Copper
In this video, we will demonstrate how to properly braze copper pipe and fittings which is much different than soldering. We will discuss purging with Nitrogen in detail in a separate video.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Metering Device Testing and Replacement
This video will demonstrate steps on how to test thermal expansion valves on evaporator coils for air conditioning equipment in the field.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Recognizing Liquid Line Restriction and Metering Device Problems
In this video, we will show you how to recognize liquid line restrictions, along with how to diagnose a problem with a metering device.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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How to Clean Coils
In this important video, we will show you the steps necessary to clean coils on an air conditioning system to keep it running in tip-top shape. It is extremely important that coils have the sufficient airflow they need for the system to operate properly.
Interested in learning more about NexTech...
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How to Test Defrost Operation
In this video, we will show you how to properly test the defrost operation on a heat pump system in order to verify proper operation.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Over & Undercharged Heat Pump Systems
In this video, we will learn how to tell if a heat pump is overcharged or undercharged.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Troubleshooting a PSC Compressor
In this video, we will demonstrate how to properly inspect, diagnose, and troubleshoot a PSC compressor on a system in the field. On average, most compressors that get turned in for warranty are not even bad. It is extremely important to diagnose compressors properly. In this video, we will show...
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Troubleshooting A Compressor
Most compressors turned in for warranty are not even bad. This video shows you how to properly diagnose a compressor in the field to see if it does in fact require replacement.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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Replacing a Service Valve
After watching this you can successfully replace a faulty or leaking service valve on an air conditioner or heat pump.
Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com
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How to Repair a Damaged Coil
Repairing a coil in lieu of replacing a coil is a task that all HVAC technicians need to do at some point in their career. Here, we will show you an example of repairing a condensing coil that had a screw drilled into it by accident.
