How to Flush the Y-filter in Your ZipFarm
To backflush manually, this is what you can do:
Turn off the outgoing valve (valve A) (but leave the main pump on).
Turn off the valve that shortcuts from the mail line to the other side of the filter (valve B) (you’re essentially shortcutting past the filter).
Turn on the valve for the backflush line. (valve C)
Hold a bucket under the Y-filter (where the backflush line exits) and open the valve (valve D). Let the backflush water run out until the bucket is about half full. This will push water straight through the filter, flushing out the solids that have collected at the bottom of the filter.