I left my Gravity Works unused for a year whilst I was away.
When I got back, I found that gravity didn't work. So, I tried back-flushing. I tried squeezing water through. I tried blowing through it. Nothing. Not a drip. I got pretty peeved and, in a bit of a temper, put it by the bin.
About a week later, I decided that rather than chuck it, I'd attach it to the full dirty bag and just leave it to see what would happen. After an hour or so there was a few mls in a glass. After two hours, a tiny bit more. Then, out of frustration more than anything, I shook and shook the filter. All these bubbles came out. So, I left it and it dripped, only slightly faster this time ... but still more like melting tar than a spring torrent.
So, I gave it a few more taps and another good old shake. Did a bit of back-flushing by putting some water in the clean bag and lifting the it above the the dirty bag. More air! There was a marginal yet noticeable improvement in flow too.
Then, after a few more hours of this monkeying about, I filled the dirty bag right up and hooked it as far up as I could and put the clean bag on the floor. And, I left it.
Expecting it to take another hour or so to do very little, when I went back into the kitchen for a cuppa a few minutes later, I was surprised to find that the dirty bag had completely emptied itself. Filter Fixed!
It was then that a realized that I hadn't emptied the clean bag of water, and that I had about a litre of water on the floor to mop up.
Well, the floor needed a scrub anyway.
After that, I unplugged the filter from the tubes, plugged it back in the other way round and ran two litres through it in reverse. After which, it was good as gold.
I think I will just use it more often in order to avoid this palaver in the future.
