14.02.2016 Views

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

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Pressures, checking on vehicles<br />

Página 32 de 33<br />

- Flush refrigerant circuit with<br />

compressed air and nitrogen.<br />

- Re-charge refrigerant circuit.<br />

- Repeat test.<br />

- Expansion valve or compressor<br />

malfunctioning.<br />

- Discharge refrigerant circuit.<br />

- Replace expansion valve and<br />

receiver.<br />

- Re-charge refrigerant circuit.<br />

- Repeat test, if function is not<br />

- Replace A/C compressor.<br />

- A/C compressor malfunctioning. - Discharge refrigerant circuit.<br />

- Replace A/C compressor.<br />

- If quantity of refrigerant extrac<br />

is substantially greater than<br />

specified capacity:<br />

- Re-charge refrigerant circuit.<br />

- Repeat test.<br />

Note:<br />

- If the problem is with the A/C<br />

Compressor Regulator Valve<br />

N280 (regulating valve is not<br />

actuated but compressor operates<br />

nevertheless), refrigerant circuit<br />

does not have to be flushed. It is<br />

sufficient in this case to replace<br />

the compressor (adjust quantity of<br />

refrigerant oil in compressor).<br />

- If expansion valve is<br />

malfunctioning (permanently<br />

closed or does not open<br />

sufficiently), A/C Compressor<br />

Regulator Valve N280 is actuated<br />

to maximum output and low<br />

pressure drops to value in graph<br />

or below (compressor draws off<br />

refrigerant from low-pressure<br />

side). As however refrigerant<br />

cannot flow via expansion valve,<br />

cooling output is not attained and<br />

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

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

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!