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

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Introduction Age of system If a system is very old and is using outdated technology and parts, it could be appropriate to replace it, whereas newer equipment may have modern design and already use suitable refrigerants. Current level of reliability If the reliability of the system and its components are poor, resulting in repeated service visits and losses of parts and refrigerant, then a replacement system may be the preferred option. System efficiency and potential for efficiency improvement If a system has a poor level of efficiency, it is necessary to consider whether there are viable operations that could be carried out to help improve the efficiency, but it is such that this is not possible, then adoption of a new system should be considered. The choice is often complex and a function of many different factors. Typically, the age of the equipment is a leading factor in terms of which conclusions are drawn in terms of how the equipment should be handled, for the reasons implied above. 6
Introduction How to assess conditions Here is an overview of conditions for the refill, drop-in, retro-fit and new system options, which includes considerations that should be given to how a system is handled. Considering these factors, read the conditions below and then select the option you might choose The conditions 4 CHAPITRE 1 PAGE 06 HOW TO ASSESS CONDITIONS FULL INTEGRATED INTO APPLICATION ? LIMITED AVAILABILITY OF NEW SYSTEMS ? HCFC , HFC , NATURAL REFRIGERANT ? LOW LEAKAGE ? NOT INTEGRATED INTO APPLICATION ? EXTENSIVE AVAILABILITY OF NEW SYSTEMS ? HIGH LEAKAGE ? CFC REFRIGERANT ? SYSTEM IN GOOD CONDITION ? NO EXPERTISE FOR NEW SYSTEMS ? SYSTEM IN POOR CONDITION ? EXISTING SYSTEM EXTENSIVE EXPERTISE FOR NEW SYSTEMS ? NEW SYSTEM GOOD RELIABILITY? GOOD EFFICIENCY ? POOR RELIABILITY? POOR EFFICIENCY ? 7 SMALL CHARGE ? NOT MANY YEARS OLD ? GOOD POTENTIAL FOR EFFICIENCY IMPROVEMENT ? LARGE CHARGE ? MANY YEARS OLD ? POOR POTENTIAL FOR EFFICIENCY IMPROVEMENT ?
Page 1 and 2: Manual for Refrigeration Servicing
Page 3 and 4: Introduction When to use the manual
Page 5: Introduction The Factors affecting
Page 9 and 10: Introduction Characteristics of Sel
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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