Manual for Refrigeration Servicing Technicians - UNEP - Division of ...

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Introduction Refrigerant type and availability Condition Observation HFC, CO2, HC, NH3 CFC, HCFC HCFC CFC Severity of leakage low low medium high Charge of refrigerant high medium medium low Alternative refrigerant availability poor good good good Physical size of system large large medium small Availability of similar systems none none none many Availability of system expertise none some some much Degree of integration high high medium low Condition/state of equipment good good fair poor Age of system new medium medium old Current level of reliability good good fair poor System efficiency good good medium poor Efficiency improvement potential good good medium poor Recommended action: Repair and refill Drop-in Retrofit New system 8
Introduction Characteristics of Selected Types of Equipment Different types of equipment have certain characteristics associated with them, that may affect some aspects of the decision-making and some of these are listed in the Characteristics of Selected Types of Equipment sheet Application example System Type Relative Charge Integrated into Application Domestic refrigeration integral small low Stand alone retail food display and vending integral small low Condensing unit refrigeration remote medium medium Large supermarket systems distributed large medium Cold storage remote large medium Industrial process refrigeration all medium, large high Refrigerated transport remote medium high Split and ducted air conditioners remote medium medium Portable & window air conditioner units integral small low Heat pumps all medium, large medium Chillers integral medium, large medium Mobile air conditioning (MAC) Integral small high 9
Page 1 and 2: Manual for Refrigeration Servicing
Page 3 and 4: Introduction When to use the manual
Page 5 and 6: Introduction The Factors affecting
Page 7: Introduction How to assess conditio
Page 11 and 12: Introduction Another form of refere
Page 13 and 14: Introduction Choose your chapter Th
Page 15 and 16: 1 Environmental impact of refrigera
Page 17 and 18: 1 Environmental Impact The ozone la
Page 19 and 20: 1 Environmental Impact RADIATION FR
Page 21 and 22: 1 Environmental Impact The ozone la
Page 23 and 24: 1 Environmental Impact Effects of o
Page 25 and 26: 1 Environmental Impact The greenhou
Page 27 and 28: 1 Environmental Impact Timeline act
Page 29 and 30: 1 Environmental Impact Alternative
Page 31 and 32: 1 Environmental Impact The way forw
Page 33 and 34: 2 Refrigerants 2.1. Section objecti
Page 35 and 36: 2 Refrigerants Chemical properties
Page 37 and 38: 2 Refrigerants Safety characteristi
Page 39 and 40: 2 Refrigerants Types of refrigerant
Page 41 and 42: 2 Refrigerants Those with ozone dep
Page 43 and 44: 2 Refrigerants Those with zero ozon
Page 45 and 46: 2 Refrigerants Carbon dioxide (CO2,
Page 47 and 48: 2 Refrigerants Azeotropic Blends An
Page 49 and 50: 2 Refrigerants Using Refrigerant Bl
Page 51 and 52: 2 Refrigerants Lubricants Today, al
Page 53 and 54: 2 Refrigerants Refrigerants and app
Page 55 and 56: 2 Refrigerants Properties of most c
Page 57 and 58: 3 Refrigerants Content Management M
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3 Refrigerant Management The majori
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3 Refrigerant Management Handling o
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3 Refrigerant Management Recovery c
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3 Refrigerant Management Refrigeran
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3 Refrigerant Management Refrigeran
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3 Refrigerant Management Open Refri
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3 Refrigerant Management CHAPITRE 3
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3 Refrigerant Management Recycling
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3 Refrigerant Management equipment
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3 Refrigerant Management PAGE 22 Ex
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3 Refrigerant Management Further re
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Summary This section will provide t
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4 Servicing Practices Moisture Mois
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4 Servicing Practices Non-condensab
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4 Servicing Practices Evacuation A
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4 Servicing Practices 7 - For large
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4 Servicing Practices Pressure unit
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CHAPITRE 4 4PAGE 10 LEAK DETECTION
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4 Servicing Practices Detection met
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4 Servicing Practices CHAPITRE 4 PA
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4 Servicing Practices Volumetric ch
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4 Servicing Practices Electronic ch
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4 Servicing Practices Why charge re
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5 Retrofitting Content General retr
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5 Retrofitting • Upon evaluation
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5 Retrofitting General retrofitting
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5 Retrofitting procedures that you
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5 Retrofitting MVAC retrofitting pr
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5 Retrofitting Although, in general
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5 Retrofitting Further reading UNEP
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6 Summary 6.1. Overview of refriger
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6 Safe Refrigerant Handling Oxygen
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6 Safe Refrigerant Handling The com
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6 Safe Refrigerant Handling • Nev
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6 Safe Refrigerant Handling Safe ha
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6 Safe Refrigerant Handling leak de
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6 Safe Refrigerant Handling • Lea
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6 Safe Refrigerant Handling Storage
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6 Safe Refrigerant Handling Recomme
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6 Safe Refrigerant Handling 3 - Sho
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Glossary Glossary Absolute pressure
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Glossary Fossil fuels Carbon-based
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Glossary hole in late 1985, governm
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Glossary Sealed system A refrigerat
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Acknowledgements Acknowledgements I
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Copyright Copyright © United Natio
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