I think there should be a section just for troubleshooting tips. When I learned this tip, I thought it was the best thing since sliced breard. To test to see if you have a bad membrane in your balance chamber put your H or K into rinse. While it is rinsing, unplug one of the wands. This will cause all the bottom valves to close and all the tops to open. Take off all the hoses on the top valves. Take a 60cc syring full of water and get a hose to connect the syring to one of the vavles. Push the water into the valve. It should only hold about 30cc so if you can push all 60 through, you will know you have a leak. Don't always trust it if you can only push 30cc. Sometimes the hole can push against the chamber and plug itself up, so if you can only push 30cc, flush from the other direction. This is 1 millions times easier than pulling apart the chambers.

Good tip. The fastest way to check for a tear IMO is to bring the machine into conductivity and put both dialysate lines into a bucket of acid. If you have a tear the condo will spike in about 30 seconds. This is because pure acid is leaking from the spent side into the fresh side through the tear.

Also if the conductivity in dialysis mode is to low and the machine is in by-pass you can do the acid test with the conductivity cell calibration the screen will show the spike no need to hook up neo meter.