just buy a pressure switch with manual override they should be changed out every once in awhile anyways. https://www.ebay.com/itm/SquareD-135-175-PSI-Air-Compressor-Pressure-Switch-Control-Valve-9013FHG42J59M1X/201155198741?epid=0&hash=item2ed5c8bf15:g:qP4AAOSwrU1bEFF7