Automating AC Drain Line cleaning (update)

[vitaliy_kh]

Here is a link to the Complete Project thread.

[complete project] Easy DIY Fluid Dispenser

The intention for this project was to create an automated AC Drain Line cleaning. But this happens to be an universal DIY Fluid Dispenser. It could be used to dispense any fluids, including hard chemicals. The used parts are: Peristaltic Pump Amazon.com: Peristaltic pump 12V DC miniature laboratory high flow 220ml/min Kamoer KHPP260 self-priming circulation pump small liquid dosing pump : Industrial & Scientific Contactless Liquid Level Sensor Amazon.com: Taidacent Non Contact Liquid Le…

@robl3577

The vinegar tube should be installed relatively tight into the condensate line. You don't want to pull a bunch of air through the condensate line if the tube fits loose. Even just a piece of duct tape should be enough.

The connection is pretty much sealed (see the picture in the above link) but this makes very little sense. First - drain-to-pan connection cannot be sealed. And what the problem is to add vinegar into vertical open drain end which is present for specifically this reason?

@robl3577

Your rate may change depending on the level of the vinegar bottle relative to the discharge.

Peristaltic pump has always the same dispense rate by design. When stopped peristaltic pump is very well sealed, again by design.

@robl3577

The drain line will be under a small negative pressure because of the AC fan. This means when the fan is running, it could dispense more vinegar than when it is not running because of reduced head pressure.

Again, this is not a case for the peristaltic pumps.

@robl3577

but 3.2mL is a very small amount.

The rule is programmed to dispense around 5mL daily and 150mL once a month. Total monthly vinegar dispense will be around 300mL. This should do the right job (I hope).
And yes, line is clean.

I am in South Florida and AC is running non stop all around the clock 24/365. I have no idea what is a daily amount of condensate but I am sure, it is far less than a gallon (but I could be wrong).