FACSCalibur -- sheath filter replaced

This morning when I came in, the FACSCalibur was on in Run-High mode, though the sheath fluid had long since run out. The user from yesterday had left it on like this all night. I tried to get it running again, but couldn't get anything to flow through the sheath filter. I called instrument support and they confirmed that the sheath filter was no longer useable and had to be replaced. Luckily, I had just ordered and received a spare sheath filter last week, so I used that one. I also changed the waste tank cap to the unbreakable type. With the new sheath filter, I was able to get the system running again, ran FACSComp, and it passed. We're up and running again. Hopefully, this won't happen again.