I'm running a two 'man' system from my tank. Two pumps to push water through two hose reels.
One pump has a variflow, and that usually works just fine, but the other that is just a pump wired to a battery; no flow controller at all; keeps on giving me problems. I was nearly for chucking a few litres of petrol into the back of my van and setting fire to the lot this afternoon.
I keep on getting airlocks. This is what happens:
I pull up, switch the pump on, take the hose and pole to a window, plug in and nothing comes out. I walk back to the van and unplug the hose that goes into the hose reel and the pump kicks in and water starts coming out. I plug it back into the hose reel, go back to the pole and start working. I finish, uncouple the pole hose from the reel hose, take it to the next property, plug in - and no water comes out - so I walk back to the van, unplug the hose that goes into the reel, and water starts coming out, I then go back, clean windows and then when I move again, I need to go back to the van to unplug the hose that goes into the reel again.
It was driving me around the bend this afternoon; I must've walked about a kilometre because of air locks.
I may also get my camcorder out and do a Youtube showing my set up tomorrow and asking for some advice.
But, what causes airlocks?
