We have here an optional Mixmax agitator system, and on the six eighty, the smaller model, it’s an option. On the eight ninety and the eleven fifty, it’s standard.

So it’s powered by the returns from the spray valves, spraying system, and it runs back in on an electric control. You’ve got two returns through this Y into the agitator tap, select tap, and it’s got a little decal here to show you which position is which, and a little arrow on the handle, so, this particular, tab is a quarter turn tab, and when it’s vertical, we’re on bypass.

So the flow is just waffling back to tank, with very low back pressure.

As we increase agitation, the back pressure in these return pipes increases, and when we’re on full agitation, we can actually generate quite a few PSI or bar of back pressure in these in the return side of our valving.

So it’s recommended that we use the agitator while we’re filling and mixing, but when it comes to spraying, we’re better it’s best to back it off. Now this in this particular situation, we can have this tap anywhere in between bypass and full agitation. When we’re in full agitation, because of the back pressure generated with the orifice and the Mixmax agitator nozzle.

This back pressure can cause issues with overriding of our manual or electric pressure valves. On the manual system of course, we’ve just got a complete manual system, It will override your manual valve. On the electric system, same again. And when we go to the auto rate system, that will interfere with the automatic regulation so, that’s why it’s best, to use this for when you’re mixing a chemical, and then when you come to spray, back it off. And if you need agitation while you’re spraying with the type of chemicals or powders you’re using, you can have it around forty five degrees, but otherwise, we recommend fully vertical, full bypass.

We’ve had a number of calls from farmers who, where they have they have an auto rate system, and they’ve been spraying happily. They’ve gone and filled their tank with a new batch of spray, and they come back, to the paddock, and the system is telling them to speed up, speed up, and the pressure is way above normal range, and they’re traveling above their normal speed range because it’s telling them to speed up and they they can’t get rid of this warning. It is possibly generated the warning is probably possibly generated by the fact that, this agitator is on too aggressive, and it’s backing up back pressure in the system and overriding the pressure regulator valves.

But this electric one will be doing its best to dump the flow because the flow meter’s saying we’ve got too much flow here, but, of course, it’ll be dumping it all back here, but the pressure is building up against the, agitated nozzle, and there’s no way that the system can bring that pressure down. So it’s a simple, thing to ask him, where is your agitator tap? Is it horizontal or is it vertical? And then nine times out of ten he’ll say, well it’s horizontal, and just tell him to back it off and the problem goes away.