here - Snap-on Equipment
here - Snap-on Equipment here - Snap-on Equipment
Introduction Refrigerant Gases Halogens are any of the five elements (fluorine, chlorine, bromine, iodine and astatine) that form part of group 7a of the Periodic Table of Elements. The fluorine and chlorine elements of this family are used to create a methane organic compound used to form dichlorodifluoromethane (CCL 2 F 2 ), a halogenated hydrocarbon called CFC-12 (chlorofluorocarbon 12). This refrigerant gas is commonly known as Refrigerant-12, or R-12, and has been used as a refrigerant in mobile air conditioning systems for many years. The new refrigerant in the halogenated hydrocarbon family, HFC-134a (CH 2 FCF 3 ), or R-134a, is now being incorporated in mobile air conditioning systems. HFC stands for hydrofluorocarbon. The environmental impact of mobile air conditioning refrigerant containing chlorine (R-12) has caused regulatory action that will eventually eliminate the use of such products. Regulatory action is necessary because when the chlorine content in R-12 is exposed to the atmosp
Introduction Refrigerant Handling Refrigerant Safety Mobile air conditioning systems contain chemical mixtures that require special handling to avoid injury and to avoid venting refrigerant into the atmosp
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- Page 4 and 5: Part Number ZEEAC304D Revision A ©
- Page 6 and 7: Safety Information The signal word
- Page 8 and 9: Safety Information Oil (Lubricant)
- Page 10 and 11: Safety Information Risk of injury.
- Page 12 and 13: ii Table of Contents
- Page 14 and 15: Trademark and Copyright Information
- Page 16 and 17: Using This Manual Safety Messages S
- Page 18 and 19: viii Using This Manual
- Page 22 and 23: Introduction Refrigerant Substitute
- Page 24 and 25: Introduction Functional Description
- Page 26 and 27: Introduction Back View Figure 1-2:
- Page 28 and 29: Introduction Particle Filter Assemb
- Page 30 and 31: Introduction Language Selection Wit
- Page 32 and 33: 1-14 Introduction
- Page 34 and 35: Installation and Operation 3. Conne
- Page 36 and 37: Installation and Operation Adding R
- Page 38 and 39: Installation and Operation Operatio
- Page 40 and 41: Installation and Operation Connecti
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- Page 44 and 45: Installation and Operation Charge O
- Page 46 and 47: Installation and Operation Removing
- Page 48 and 49: Maintenance Maintaining the Oil Sep
- Page 50 and 51: Maintenance Master Filter The maste
- Page 52 and 53: Maintenance Changing the Master Fil
- Page 54 and 55: Maintenance • Wear safety goggles
- Page 56 and 57: Maintenance Figure 3-4: Particle Fi
- Page 58 and 59: Maintenance Symptom Possible Cause
- Page 60: 3-14 Maintenance
Introducti<strong>on</strong><br />
Refrigerant Gases<br />
Halogens are any of the five elements (fluorine, chlorine,<br />
bromine, iodine and astatine) that form part of group 7a of the<br />
Periodic Table of Elements. The fluorine and chlorine elements<br />
of this family are used to create a methane organic compound<br />
used to form dichlorodifluoromethane (CCL 2 F 2 ), a halogenated<br />
hydrocarb<strong>on</strong> called CFC-12 (chlorofluorocarb<strong>on</strong> 12). This<br />
refrigerant gas is comm<strong>on</strong>ly known as Refrigerant-12, or R-12,<br />
and has been used as a refrigerant in mobile air c<strong>on</strong>diti<strong>on</strong>ing<br />
systems for many years.<br />
The new refrigerant in the halogenated hydrocarb<strong>on</strong> family,<br />
HFC-134a (CH 2 FCF 3 ), or R-134a, is now being incorporated in<br />
mobile air c<strong>on</strong>diti<strong>on</strong>ing systems. HFC stands for<br />
hydrofluorocarb<strong>on</strong>.<br />
The envir<strong>on</strong>mental impact of mobile air c<strong>on</strong>diti<strong>on</strong>ing refrigerant<br />
c<strong>on</strong>taining chlorine (R-12) has caused regulatory acti<strong>on</strong> that will<br />
eventually eliminate the use of such products. Regulatory<br />
acti<strong>on</strong> is necessary because when the chlorine c<strong>on</strong>tent in R-12<br />
is exposed to the atmosp<str<strong>on</strong>g>here</str<strong>on</strong>g>:<br />
• It depletes the protective oz<strong>on</strong>e layer in the atmosp<str<strong>on</strong>g>here</str<strong>on</strong>g>,<br />
• It has relatively high global warming potential, and<br />
• Its l<strong>on</strong>g atmospheric lifetime is approximately 120 years.<br />
R-134a has been developed for new vehicle producti<strong>on</strong> but<br />
does not replace or directly substitute for R-12 in existing<br />
vehicles. R-134a does not c<strong>on</strong>tain chlorine, does not deplete<br />
the oz<strong>on</strong>e layer in the atmosp<str<strong>on</strong>g>here</str<strong>on</strong>g> and has an atmospheric<br />
lifetime of about 15.5 years.<br />
Envir<strong>on</strong>mental Protecti<strong>on</strong> Agency (EPA) and state regulati<strong>on</strong>s<br />
specify that:<br />
• Provisi<strong>on</strong>s be made to certify all air c<strong>on</strong>diti<strong>on</strong>ing service,<br />
installati<strong>on</strong> and repair pers<strong>on</strong>nel,<br />
• Refrigerant be recovered, recycled or reclaimed from<br />
automotive air c<strong>on</strong>diti<strong>on</strong>ing systems, instead of allowing<br />
vapors to be expelled, or vented, into the atmosp<str<strong>on</strong>g>here</str<strong>on</strong>g>, and<br />
• Refrigerant be recycled and reused, or properly disposed of,<br />
instead of allowing vapors to be expelled, or vented, into the<br />
atmosp<str<strong>on</strong>g>here</str<strong>on</strong>g>.<br />
Mobile air c<strong>on</strong>diti<strong>on</strong>ing service, installati<strong>on</strong> and repair<br />
technicians must be qualified and certified.<br />
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