I’ve had a 4-keg system for about 2.5 years. I got a 10-gallon bottle from the local Praxair. A couple of weeks ago, I accidentally put the CO2 post on the liquid hole and vice versa and had a hard time getting the quick connects to take on a fresh keg of Blonde Ale. But I finally got them on. As I was trying to get them off (using a rubber hammer) I ended up cracking the CO2 quick connect (Yeah, I know, but I couldn’t figure out any other way, and the liquid quick connect popped right off).
I was sharing another CO2 connection from another keg until I got a new quick connect. Got it in the mail on the 16th, tightened it on the nut, and hooked all the kegs up to gas. I actually drank off the kegs that night.
I didn’t pull another beer until Friday evening. I got a full glass of lager and made dinner. After dinner, I went down and pulled from a honey lager. Nothing. Blonde ale - nothing. I knew my CO2 was getting low and sure enough - Flatlined.
I was kind of worried about it, since I was able to get a beer out of the lager keg, but not out of the blonde ale keg (with the new CO2 quick connect). I wondered if it was on correctly.
After I got a refilled CO2 bottle, I kept checking the PSI, and it has been above 800 for the past 3 days, so I figure that once the bottle goes dead, then the pressure will equalize if the manifold valves are kept open.
Is this similar for everyone? Do you normally leave your manifold valves open as long as there’s beer in the kegs, or do you let them get pressurized to the carbonation level you want and then turn the valves off until the pour slows - and then you open them up again?