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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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A/C refrigerant system, servicing<br />

Página 47 de 51<br />

87-126<br />

A/C refrigerant system, flushing with<br />

compressed air and nitrogen<br />

CAUTION!<br />

When using compressed nitrogen always<br />

use a pressure regulator and the proper<br />

adaptor hoses and fittings (available locally).<br />

During flushing, use existing<br />

exhaust/ventilation systems to draw off the<br />

gas mixture escaping from the A/C system.<br />

DO NOT flush R-134a refrigerant system with<br />

R-11. R-11 is not compatible with R-134a<br />

refrigerant and PAG oil and will cause total<br />

system contamination.<br />

Flush refrigerant system with compressed air and<br />

nitrogen if:<br />

Refrigerant oil is dark and viscous (thick)<br />

Too much refrigerant oil is in the system<br />

following compressor replacement<br />

Unclear or do not know how much refrigerant oil<br />

is in the system<br />

Moisture, dirt or other impurities have entered<br />

the refrigerant system (i.e. following an<br />

accident)<br />

Unable to pull a constant vacuum during<br />

evacuation of a leak-free system due to<br />

excessive moisture in the system<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

13/2/<strong>2005</strong>

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