This troubleshooting PowerPoint gives HVACR instructors, service managers, and trainers the opportunity to help develop their student's/technician's troubleshooting skills in a PowerPoint presentation format.
The PowerPoint employs wiring diagrams and illustrations along with detailed descriptions of 15 specific refrigeration system problems, including:
Normal refrigeration pressures, a sweating suction line, and excessive current draw;
Lower than normal system pressures and compressor current draw that's far below normal;
Lower than normal pressures and a higher than normal current draw;
System pressures lower than they should be and a low current draw;
High side lower than normal and low side in a vacuum;
Vacuum on the low-pressure side, high side higher than normal;
Low side pressure in a vacuum, high side pressure slightly higher than it should be, current draw lower than normal;
Differential between low and high side pressure side of the system are closer together than they should be;
High side pressure higher than it should be, current draw of the compressor excessive;
Equipment with a history, customer's complaint is that the house is always sticky;
A follow up on a heat pump reversing valve replacement;
A customer's complaint that the house just isn't as comfortable as it should be;
A rooftop air conditioner that doesn't keep the store comfortable on hot days;
A new installation of a comfort cooling system in a ranch style home;
A follow up on a compressor diagnosis.
Answers to the troubleshooting scenarios are presented on a separate slide in the PowerPoint which will allow the instructor/trainer to present the problem along with details of the scenario, have class interaction, and then display the answer. This is a great way to engage your class and improve their critical thinking skills!
Click here to view a sample of this PowerPoint.
An Electrical Troubleshooting PowerPoint is also available! Buy both together and save!
Available on a CD that can be shipped to you, or Esco Proctors can login and purchase the PowerPoints for immediate download in their "My Esco."