Model: astro van
Engine Size: 4.3l
Refrigerant Type: r134a
Country of Origin: United States
my question is, do cycling switches come pre adjusted? if not, what is the procedure to adjust?
they should come already adjusted. Some are not adjustable at all. Typically, with R134, they should cut out at approx 21 to 24 psi and cut in at 45 psi.
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