If the AquaCure has a high liquid level alarm and it’s over-full,
the alarm will be shrieking and the gas production will shut off.
Sometimes the AquaCure Tower Cap will ‘retain’ fluid when you are filling it; due to a vapor lock preventing the water from dropping into the electrolyzer.
I mention this effect in the Operation Manual and also that the easiest way to prevent this condition is to have the machine running as you squirt the water in (the gas production prevents the vapor lock and the water drops down into the machine).
The reason this is an issue is because if the water you are squirting in isn’t dropping into the machine, the liquid level in the sight tube won’t rise and you’ll keep putting water in… resulting in too much water.
The ‘stored’ water will drop into the machine as soon as you start up the machine, which will cause the machine to be ‘over-filled’.
Sometimes (when the liquid level is CLOSE to the full line) the problem is that when the gas production starts it actually raises the liquid level as gas takes up ‘room’ in the solution… Raising the liquid level to above the full line and the alarm goes off. In this case the AquaCure will run for a few minutes before the alarm goes off.
To fix, you have two options:
1. If the AquaCure will operate for short times, just run the AquaCure the short times until enough water is used up (converted to gas) that the liquid level drops to where the alarm doesn’t go off anymore. But that option would be annoying.
2. You remove some fluid (see below). SAVE the fluid, because it contains lye that you need to put back into the machine.
The obvious way to remove excess fluid is to dump some out… But that’s inconvenient; particularly if you’ve filled it so far that you have liquid in the Tower Cap, because removing the Tower Cap would cause the solution to pour all over the machine. If it is that full, it’s best to drain out enough of the excess through the Tower Cap ‘gas out’ fitting, until the liquid level is low enough to take the Tower Cap off without spillage.
Note that it’s ALWAYS a good idea to wrap a cloth around the base of the Tower Cap when removing it anyway, because there will always be at least condensation drips.
If you can remove the Tower Cap without spillage, the simplest way (I’ve discovered) to remove excess fluid from the AquaCure is to cut a 6” section off one of your 1/8” ID hoses (I cut it off the humidifier to drinking bubbler hose) and attach it to your syringe.
Then you can SUCK the excess fluid out of the AquaCure (with the syringe) and squirt it into a jar (that you can seal for storage).
Then, once the AquaCure liquid level has dropped sufficiently, you can squirt the fluid back in.
Obviously, you’d remove the Tower Cap to suck electrolyte as above.
Note: normally pure water can be (and should be) squirted into the Tower Cap check valve but you’ll be SAVING the excess fluid you drain (from over-filling) so you’ll squirt that fluid back into the AquaCure through the check valve when it needs more fluid.
It’s NOT a good idea to remove the Tower Cap for normal water filling; The Tower Cap is not designed to be regularly taken off (only for maintenance purposes). Also the duckbill check valve needs regular cleaning, which is accomplished every time you squirt clean pure water through it.
NOTE: Sometimes (very rarely) the upper fluid level sensor will become too sensitive due to local conditions (atmospheric pressure, temperature, humidity… it’s an electronic thing) and alarm when the fluid level isn’t actually too high. In this case you adjust the sensitivity of the upper sensor (it’s easy, I’d send you instructions)