Strange airlocks?

[Jamin DeMarco]

Hi all, my first post here after taking a wealth of information from this site.

I'm having issues with my system, it's a second hand trailer system that hasn't given trouble before. But I took it all apart so the tanks can go in the van whilst I was repairing the trailer spring and now I've put it all together it's doing something strange.

First off the order is this 3 x 150 lt tanks connected in parrallel > sureflo > 2 x 11lt di vessels > reel with a digital pump controller

Since I've put it all back together when I leave it for about 15 minutes with the tap on the pole switched off but the pump on and reading (de ) when I do open the tap on the pole again it will slowly loose pressure until it stops and reads (PS) on the controller .then I have to remove the hose from the sureflo and disconnect battery to restart, then when reconnected it fires up again and after priming I'm up and running until I stop for more than 15 minutes again.

If I stop for only a few minutes there's no problem.

What's the deal??

 

[steve garwood]

Your pump recognises the water has stopped so signals 'de' (dead end) this is fine for short periods.

When you leave the water off for a longer period, the pump senses a problem and signals 'ps' (pressure switch).

It has a build up of back pressure. The moral of the story is to turn off the system via your digital controller if you know it will be off for a while.

This is where a 'one shot' remote comes in handy as it saves you keep walking to the van when a customer starts to chin wag etc