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2004 Toro 5700D

9 posts
  1. Jason Schulte
    Jason Schulte avatar
    0 posts
    9/8/2016 1:09 PM
    Does anyone know if this is normal? While spraying towards the end of the tank, around 25 gallons or less. I'll shut off the agitation button to reduce foaming. (Yes I could use a defoamer) The pressure then jumps back and forth from 75,which is normal for the flow and speed we want to 125 for a second or two then back to 75. After a few minutes it stops and the pressure returns to normal. Everything works fine including the spray controller. In this application we used a 35 GPA rate. Just seems a little odd. The machine is old and we want to preserve her life. Previously this machine was used, but without the spray controller in manual mode for quite some time. Perhaps 2-3 thousand hours. Currently she has 4150 hours. Thanks in advance for any input. Jason :)



  2. Michael Whiteaker
    Michael Whiteaker avatar
    0 posts
    9/15/2016 10:09 AM
    Have you tried to flush the system? sounds lie a you might have a clog in your pump or one of your hoses.



  3. Donald Smith
    Donald Smith avatar
    10 posts
    9/16/2016 6:09 AM
    Jason Schulte said: Does anyone know if this is normal? While spraying towards the end of the tank, around 25 gallons or less. I'll shut off the agitation button to reduce foaming. (Yes I could use a defoamer) The pressure then jumps back and forth from 75,which is normal for the flow and speed we want to 125 for a second or two then back to 75. After a few minutes it stops and the pressure returns to normal. Everything works fine including the spray controller. In this application we used a 35 GPA rate. Just seems a little odd. The machine is old and we want to preserve her life. Previously this machine was used, but without the spray controller in manual mode for quite some time. Perhaps 2-3 thousand hours. Currently she has 4150 hours. Thanks in advance for any input. Jason :)

    Jason,

    Are you using the Pro Control? If so, there is a flow meter and valve which controls the speed of the pump (ans subsequent pressure) as flow demands are changed. When you shut off agitation, the valve has to respond to slow down the pump speed for the lower demand. You may want to check your valve to see if it's functioning properly.



  4. Jason Schulte
    Jason Schulte avatar
    0 posts
    9/22/2016 2:09 PM
    Thanks gents. I have checked the lines going into the tank for agitation which total 3. And they are clear. The high pressure relief valve line on the back of the tank I did not check but will tomorrow. I am using the pro control and I have the agitation down to 30. The original setting is at 80 and it is just a number not psi. I'm leaning now towards the high pressure relief valve or line being clogged. I'll post results once I can figure this darn thing out. I'm spraying properly and accurately but just have crazy readings once I turn the agitation off which I know is a viable option.



  5. Andrew Cross
    Andrew Cross avatar
    5 posts
    9/23/2016 12:09 PM
    We took our sprayer apart and powder coated booms a couple of years ago, pressure relief valve was plugged solid. There is no good way to rinse it that I'm aware of other than trying to max out the pressure in manual mode, which just seems like a bad idea



  6. Jeffrey Scott
    Jeffrey Scott avatar
    8 posts
    9/28/2016 8:09 PM
    Andrew,
    We have upgraded about a dozen of the 5700 sprayers with the Capstan SharpShooter upgrade. In every one of those projects, the line to the bypass valve in the bottom of the tank is plugged solid with chemical residue. It takes 250 psi to open that valve, so it's obvious that pressure is never reached and the hose will be plugged and non functional. As part of the upgrade, we modify all of the plumbing in the rear of the sprayer. The boom solenoid valves are removed and a flow through manifold is installed with a new line going to each of the three boom sections ( because we are taking the pressure all the way to the Wilger nozzle bodies where the solenoid is in control of the flow and you get the instant on/off feature ). We also install a pressure relief valve in the system that is set to about 70 psi. This maintains adequate boom pressure and when 70 psi is exceeded, the valve opens and excess flow returns to the tank. It's a much better safety feature than the original valve that never works!
    The current cost to upgrade your 5700 would be about 13K. The SharpShooter with RateSync would work with the existing ProControl rate controller and give you some performance capability that you can never achieve without it. If your 5700 has less than 2500 hours on it, it would be a very worthwhile investment for you to consider.

    Best regards,
    Jeff Scott
    Midwest Turf Specialties, LLC



  7. Jason Schulte
    Jason Schulte avatar
    0 posts
    9/30/2016 3:09 PM
    Thanks for your kind offer. However this machine might have a value of 5-8K. Might be a rather silly expenditure for some non toro parts. Funny how difficult this valve appears in gaining access, but we are gonna try and tackle things shortly. 250 psi to unclog? sounds like extreme measures are needed. I appreciate your input :D



  8. Jeffrey Scott
    Jeffrey Scott avatar
    8 posts
    10/3/2016 7:10 AM
    This aftermarket upgrade is not inexpensive for sure. It's a bit like restoring an old car, tractor, or yes, even a Steve Austin - the Six Million Dollar Man!! "We have the technology - we can make him better than he ever was before!"
    That's why I say that if your sprayer has less than 2500 hours or so, it might be good to consider the upgrade. If you're at a point where you need to invest in a new sprayer, you'll have some options to add various levels of technology all the way up to being able to permanently load maps in the controller for greens, tees, fairways and other specific areas with sub-inch accuracy. The technology is getting better all the time as you'll see at the GIS in Orlando next February. It's not going to come cheap and it's certainly not for everyone, but it is available and making spraying quite sophisticated with a genuine return on the investment.

    Also, 250 psi is NOT going to unclog that valve! It's a heavy-duty spring-loaded valve that takes a pressure spike of 250 psi to let flow go back into the tank. Once you're in the situation that you are in with the hose plugged solid, you're better off replacing the entire hose, and while you have it apart to clean out the spring-loaded valve and lubricate it after you get the rust off it. It's still going to take a huge pressure spike to open it, but you'll have the satisfaction that it's prepared for that if it ever happens.

    Good luck!
    Jeff



  9. Jason Schulte
    Jason Schulte avatar
    0 posts
    10/26/2016 1:10 PM
    Turns out the agitation parameter was set to 30, unlike the 95-105 range in which is optimal.



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