I think I wrote about this before.. The bore packed up working at the very end of last summer – suddenly the pump was only pumping air and the grass had a few weeks of cooking (from which is hasnt really recovered over the winter)
A few attempts at restarting the flow of water earlier in the year had no effect, but I finally got it working today.
You have to run water into the inspection valve in the pump body with a hose to refill the pump and, depending on the specific arrangement of valves and pipes, the bore shaft itself.
Then (advice from fellow photographer – Tristan – thanks!) run the pump in short bursts, refilling the pump and bore to allow the head of water to be drawn back up the bore and expelling the air. Eventually, after a good few bursts or water and pump runs, the water started gushing out of the pump inspection valve and the irrigation came on. yey!
Spent the next few hours digging up the pipework to try to work out where the pipes run in order to fix a couple of non working pop-ups. Not easy as this was all laid 15 years ago and is no buried 2 feet under tree roots and stuff. Have hard hands now – callouses and everything!
Was a good day though 🙂 back to work tomorrow – poo!