Chris S wrote:
>
> > think it took about 5 cans to get the system to cycle and blow cold air.
>
> Larry,
>
> Did it take a very long time to add the refrigerant to the system?  When I
> do my obligatory 1 to 2 cans in the summer it takes about 30 minutes for a
> can and then the A/C just blows cool, not cold air.  I think it's my A/C
> system.  Perhaps a blockage.  What do you think?
>
> Chris S.
> '85 Westy
> www.knology.net/~vw/
> http://groups.yahoo.com/group/wolfsburg_campers

It helps a lot to set the can of refrigerant in a pan of warm water.
Assuming you have the can right side up to feed gas into the low side,
as the liquid in the can vaporizes it absorbs heat energy, cooling the
remaining refrigerant so that it vaporizes more slowly.  I let it go in
gradually, watching the pressures on the gauges, but as I recall it
doesn't take more than about 5 minutes for a can.
  The biggest temperature change, air out compared to air in, on my '91
is about 30 F, with about 40F for the lowest output.
   100F in : 70F out
   80F in : 50F out
    etc.

The tunnel on mine fell down.  (Yes I know there was a recall)  I don't
care for it blowing in my face.  This way it is tempered by mixing with
the warm air as it comes forward and we don't bang our heads on the
tunnel when sleeping, etc. in the back.

Larry A.
'91 GL
Chicago
10F This morning, didn't need the AC