Supermarket Refrigeration Troubleshooting - PowerPoint PPT Presentation

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Supermarket Refrigeration Troubleshooting

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Presentation Transcript

  1. Supermarket Refrigeration Troubleshooting HVAC Excellence Conference April 1, 2014 Rolf Blom Sporlan Division of Parker Hannifin

  2. Teaching Supermarket Refrigeration • Demand for “supermarket” technicians • Schools not including commercial refrigeration in their program…Why? • Knowledge • Costs • Space

  3. Teaching Supermarket Refrigeration • Where do you get the knowledge? • Is it possible to teach without the equipment?

  4. Teaching Supermarket Refrigeration • Yes it is possible to incorporate into your program! • Can be done on a minimal budget • Can be done with minimal space

  5. First Step - Educate Yourself • Get familiar with the systems • Don’t let them intimidate you!

  6. Educate Yourself • Break the system down into sections - subsystems • Learn the operation of the subsystems • Bring subsystems together

  7. Educate Yourself • Get familiar with systems • Partner with local supermarket • Partner with local contractors • Partner with manufacturers • System manufacturers • Component manufacturers

  8. Educate Yourself • Attend seminars • System manufacturers training • Sporlan Supermarket Seminar • Sporlan instructors training

  9. Develop Glossary of Terms & Acronyms • Very important! • Many different terms for same meaning • Example: A8 is a valve model number for a Refrigeration Specialties pressure regulating valve. The term “A8 valve” is used in reference to a head pressure control valve which is also referred to as “Hold Back Valve”, “Flooding Valve”, “Stacking Valve”

  10. Utilize Diagrams

  11. Utilize Diagrams • “Map” of the system

  12. Utilize Diagrams • Rack diagram • Condenser diagram • Circuit diagram • Piping diagrams

  13. Interpret Diagrams • Understand flow & operation • Generate your own diagram

  14. Utilize Refrigeration Schedules

  15. Refrigeration Schedules • Known as the “RS” • The “directions” to the “map” • Lists all the information for the refrigeration system • Engineers use it to design/build systems • Key item for teaching supermarket systems!

  16. System Components • Break subsystems down to individual components • Teach operation & function

  17. Component Operation • Purpose in system • Location • How they operate • Component operation • Cut-away view • Disassemble

  18. Components • Ask wholesalers & manufacturers for samples or warranty return parts • Have students disassemble components • Hands on learning

  19. Components • Component Identification Exercise • Partner with supermarket • Number tags attached to components on a system • Students match tag number to component description

  20. “Show & Tell” Demo Rack • Build a mock display refrigeration rack • Stand alone for “show & tell” • Use old “retired” racks • Valuable when teaching subsystems • No electrical or refrigeration lines connected • Make it mobile

  21. Teach Subsystems • Oil management • Defrost system • High side system • Compressor system • Cases • Low side system • Electrical • EMS

  22. Teach Control Systems • Energy Management System – EMS • The control system for supermarkets • Controls refrigeration, HVAC, & lighting • Utilize EMS demos • Students learn to navigate system, change settings, programming

  23. Refrigeration EMS

  24. HVAC EMS

  25. Trouble Shooting Supermarket Systems • You don’t have an operating system? • How do you teach trouble shooting skills?

  26. Utilize Simulators • Allows student interaction • Students use skill sets applied to real systems • Mechanical • Electrical • Controls • Instructors able to tract students actions, procedures, thought process

  27. Mechanical System

  28. Mechanical System

  29. Electrical System

  30. Electrical System

  31. Conclusion - Yes It Can Be Done!!! • Include supermarket systems in your program • Be creative • Ask for help • Keep learning!!!

  32. Questions???

  33. Thank You!!!