|
Leo,
It's a Binary switch that is used to protect the AC components from over pressure situations by disabling the AC compressor drive when the pressure exceeds a certain level. A Trinary switch has extra contacts to protect the compressor from under pressure situations as well where the lack of gas and therefore oil flow can cause the compressor to seize if operated continuously. Binary's have two wires (one set of pressure contacts) and Trinary's have 4 wires (two sets of internal contacts).
You can simply unscrew the switch from the hose fitting using a spanner. The refrigerant won't leak out as there is a schrader installed into the hose fitting to prevent this.
Whilst that isn't a Porsche part, they are common and very easy to get.
There should be a brand and part number somewhere on the switch that you can then use to get a replacement. Alternatively just measure the size and thread pitch of the fitting on the hose fitting and you can buy a suitable replacement from eBay very cheaply as they pretty much generic.
|