Posted by gbs on August 23, 2021 at 19:13:41 from (71.217.220.193):
We purchased a spraymate 2 controller for and old hi-clearance sprayer we have and for some reason it is not working correctly. It uses magnets mounted to the drive hub for the travel signal, we set that using a measured distance and it's dead accurate, every setting has been has been checked several times. At first the nozzles would pulse no matter the speed or gallon settings we contact their tech support and they though our pump was to large for the system to be plumbed using the inline setup, so we changed it to a bypass system, same problem. I gave up on them and change the setting on the servo to it mid range and close down the throttle valve choking down my flow of approx. 60 gpm to achieve 70 psi on the pump side of the throttle valve which will allow around 7 gpm flow then it started working at the 20 gpa I wanted, but I can't get it to maintain the 20 gpa at a travel speed of 2.5 to 5 mph. It will and want even though I've tried more or less flow from the throttle valve and adjusted the pump speed to change the pressure on the pump side of the throttle valve. I'm at a crossroads as to what to do with this system, I have the same nozzles and boom width on another sprayer when set it at 32 psi and a travel speed of 6 mph it will deliver 20 gpa, but there is the problem i don't want to have to maintain that constant speed, and here I am killing a 60 gpm pump to maintain 70-75 psi charge pressure choked down with a throttle valve to try to maintain a 15 to 30 psi demand to operate this sprayer and the controller still can't keep the flow correct. Has any one else had this problem if so what is the fix?
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