Cooling Your Vintage Vette - Part 3
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The lead from the A/C microswitch connects to the binary-type compressor safety switch. This connection is important, since it prevents the compressor from engaging or disengages it in the event of extreme low pressure (refrigerant loss) or excessively high head pressure (380 pounds), to prevent compressor damage or hose rupture. The A/C system relies on refrigerant to carry lubrication through the system. View Related Article
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