Last week I had old cond unit I replaced and pumped down. I must have been spaced out because I put my gauges on it later at the shop and it said zero. The way it was laying it looked like it was kicked off the truck. I figured well it got damaged. I got my sawzall out to cut it up, I was cutting the fan wires and nicked the coil and whoosh there she went. The light bulb went off, service valves were shut duh because it was pumped down. Good thing I wasn't near a grade school!