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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,609
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how to wire a AC pressure switch?
I received a new receiver drier today for my 1983-911SC and I was surprised it had a high pressure cut off switch mounted to it.Seeing that my car does not have one of these how do I wire this in?I have a Sanden # 507 compressor.The switch on the drier has 2 male spade terminals,they are not marked for polarity but I assume one is ground and the other is positive?I believe I have made up my mind to use Duracool or similiar R12 replacement refrigerant,do I have to wire in the pressure switch?Any help is appreciated.Thanks
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01-07-2005, 04:33 PM
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Who is John Galt?
Join Date: Jun 2003
Location: Knoxville, TN
Posts: 638
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They are neither polarity. It is either normall open or normally closed. Test with a voltmeter. Probably, hopefully normally closed. Then, at high pressure, it will open. In that case you can use it to interupt power to the compressor clutch relay coil. Where did you buy it?
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'79 911sc Targa '02 slk230 kompressor '84 Tamiya Falcon A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship. The average age of the world's greatest civilizations has been 200 years. |
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01-07-2005, 04:42 PM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
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Arizona Mobile Air is where I bought it.If I am understanding you correctly I would run a jumper wire from the compressor wire that activates the clutch to the switch and then back?To complete a loop?
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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01-07-2005, 04:53 PM
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Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
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The switch would be wired in series; to the compressor clutch '+'
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'15 Dodge - 'Dango R/T Hauls groceries and Kinda Hauls *ss '07 Jeep SRT-8 - Hauls groceries and Hauls *ss Sold '85 Guards Red Targa - Almost finished after 17 years '95 Road King w/117ci - No time to ride, see above '77 Sportster Pro-Street Drag Bike w/93ci - Sold |
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01-07-2005, 04:55 PM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,609
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I have one wire going to my compressor so that is the + correct?So it sounds like I would disconnect this wire,connect it to the switch and then run off the other terminal off the switch back to the compressor?That actually makes sense !!
__________________
2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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01-07-2005, 05:50 PM
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Who is John Galt?
Join Date: Jun 2003
Location: Knoxville, TN
Posts: 638
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Quote:
__________________
'79 911sc Targa '02 slk230 kompressor '84 Tamiya Falcon A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship. The average age of the world's greatest civilizations has been 200 years. |
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01-07-2005, 06:00 PM
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