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

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General information on refrigerant circuit<br />

Página 12 de 21<br />

- Different threads for switch on high pressure and low<br />

pressure sides.<br />

- Only valves and O-ring seals that are resistant to<br />

refrigerant R134a and refrigerant oil must be installed.<br />

A - Connection (soldered in)<br />

B - O-ring seal<br />

C - Valve (with O-ring seal)<br />

A/C Pressure Switch F129<br />

This pressure switch has 3 functions:<br />

1. Switches coolant fan to next higher stage upon pressure<br />

increase in refrigerant circuit (approx. 16 bar).<br />

2. Switches off A/C system if pressure is excessive<br />

(approx. 32 bar), e.g. because of insufficient engine<br />

cooling.<br />

3. Switches off A/C system if pressure is insufficient<br />

(approx. 2 bar), e.g. loss of refrigerant.<br />

Note:<br />

- A/C Pressure Switch F129 replaces the A/C Refrigerant<br />

High Pressure Switch F23 , A/C Refrigerant Low Pressure<br />

Switch F73 and the A/C Refrigerant High Pressure Switch<br />

F118 .<br />

High Pressure Sensor G65<br />

This High Pressure Sensor G65 is installed instead of A/C<br />

Pressure Switch F129 .<br />

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

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

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