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Supermarket Refrigeration Troubleshooting

Supermarket Refrigeration Troubleshooting. HVAC Excellence Conference April 1, 2014 Rolf Blom Sporlan Division of Parker Hannifin. Teaching Supermarket Refrigeration. Demand for “supermarket” technicians Schools not including commercial refrigeration in their program…Why? Knowledge

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Supermarket Refrigeration Troubleshooting

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  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!!!

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