maybe just OT.........some questions from a pump dummy.
I've got a little Matra CM6/1 pump that I'd like to use to shift some gray water onto the garden with. It doesn't seem to pump too well. It won's self prime and if primed manually doesn't pump:
It spins freely.
> If placed below the water level it will build up some pressure but flow is
> pretty much equal to what the siphon flow would be.
> The impeller is clean and keyed to the shaft ok.
I've tried the Matra website and found nothing other than the pump is described as a "peripheral" pump (the impeller has lots of small radial slots both sides near the outer edge). There is a little wear on the impeller inner "seal area" where it has rubbed on the motor side of the impeller housing other than that everything looks ok.
Any clues what problems I could have or if I'm applying this pump incorrectly. Thanks
best wishes for the season
robb