As soon as there is 25 lbs of pressure in the system the pressure sensor
will allow the compressor clutch to engage. If there is not 25 lbs of
pressure then the clutch will not engage it is a safety feature in that
model.

Eric Ley
Garage Mechanic ELM
2001 Demers Franklin, Qc
1985 Whitey VW 1.9 Man
1985 Goldilocks subi power Auto

--------------------------------------------------
From: "Jim Felder" <jim.felder@GMAIL.COM>
Sent: Monday, July 28, 2014 7:54 PM
To: <vanagon@GERRY.VANAGON.COM>
Subject:      Re: 1985 Vanagon A/C question

> You can jumper the wires to the clutch with 12v to force it to spin and
> take the charge.
>
> Jim
>
>
> On Mon, Jul 28, 2014 at 6:50 PM, Project Pat <psdooley@verizon.net> wrote:
>
>> Differential pressure.
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>> Of
>> Raymond Markett
>> Sent: Monday, July 28, 2014 7:35 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: 1985 Vanagon A/C question
>>
>> Thanks, how do I get refrigerant in to an empty compressor if it won't
>> spin?
>>
>