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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 48 de 51<br />

87-127<br />

Refrigerant system has been open longer than<br />

the time required for normal repairs (i.e.<br />

following an accident)<br />

Based on temperature and pressure<br />

measurements, system is diagnosed with<br />

moisture contamination<br />

Compressor is replaced due to noises or<br />

internal damage<br />

Flushing is required after replacing certain<br />

components in certain situations Page 87-<br />

87 .<br />

Flushing<br />

Use compressed air and nitrogen (available<br />

locally) to remove moisture, impurities and old<br />

refrigerant oil from A/C refrigerant system.<br />

First blow out old refrigerant oil and dirt with<br />

compressed air, then dry components with<br />

nitrogen.<br />

DO NOT blow compressed air and nitrogen<br />

through the compressor or expansion valve.<br />

Only blow compressed air and nitrogen through<br />

disconnected, free flowing components (i.e.<br />

disconnected hose, condenser, evaporator,<br />

etc.)<br />

DO NOT blow compressed air and nitrogen into<br />

a capped off A/C component. Pressurized R-<br />

134a refrigerant in the presence of oxygen may<br />

form a combustible mixture.<br />

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

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

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