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Minnesota | This might be along message! I bought my first self propelled sprayer ( 1074ss rogator) and had a couple questions about pressure problems. I bought some turbo tee jet induction tips for low pressure good drift nozzles I believe they were 11004's. My target rate and speed are at 12mph I am shooting for 10 gallons an acre at 40 psi. I am only able to get 25 to 30 PSI with those tips At 12 mph. I bought the next size with a smaller orifice to bump up the pressure a little more but I was putting out 70 to 80 PSI which was too much.
I have been messing around for days with the throttle valve on the back of the sprayer to increase and decrease the amount of water going to the booms. Did not seem to help And as I said with the throttle valve the same it varied tremendously with PSI between the two different nozzles which should not have been However, I am dead on with how much chemical I am putting out per acre but did not like the pressure
It's making it difficult to select a different nozzle because I am going by the tee jet nozzle book and nothing is coming out the way it should.
Any suggestions out there? Any help would be much appreciated!!!!! Thanks! |
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Bardstown,KY | Your numbers are right about what they should be. You can't have the wrong speed and PSI but get the right GPA. Are your gallons right going by the monitor or are you going by the product in the tank. I had mine do that this spring and I took out my flow meter and it had a piece of plastic obstructing one of the holes in the meter and made it spin faster that it should and it did the same thing yours is.
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Minnesota | Deereman23 I am going by how much spray I have in the tank after I finish a field. The Raven scs monitor I have always tells me I am putting out 10 gallons so I am right on with my product output. Forgive me.... What meter did you have a piece of plastic in obstructing the flow? Where is that located? Please forgive me I am new to rogator lol |
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Bardstown,KY | The flow meter is mounted on the rear of the sprayer under the hand valve going up the mast. If you are really getting the right gallons used than I think you have a problem with your gauge. Put a manual gauge on and see how it reads because again it should be impossible the get the right GPA and have the wrong PSI. |
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Minnesota | Yes that is why I am so baffled by the whole situation! Thanks so much! |
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Minnesota | Do you suppose I have the throttle valve adjusted incorrectly or closed too much that I'm not getting g the pressure up? |
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Minnesota | Another "please forgive me" statement but what kind of manual flowmeter should I be using ? Is that the specialty flowmeter or what do you have if you have one ? |
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Bardstown,KY | I'm assuming your talking about the valve on the back, I run my 2" hand valve all the way open. I'm talking about a manual gauge to make sure the one on your post is reading correct. If your gallons are coming out right I'm assuming that your gauge is wrong. |
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Minnesota | Yes I was referring to the 2 inch valve in back which I'm running open as well. I'm unfamiliar with which manual gauge I should be using? Where does the manual gauge connect or how does it work? Lol |
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Bardstown,KY | You could get a gauge and somehow get it teed into your system to double check. If you can buy a cap with 1/4" threads you could put the gauge it it and put it on a nozzle body, then put the sprayer in manual and see if the gauges match. |
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Minnesota | Awesome! Like I said I am very new to this ! Do you have any pictures of whay I may need ? Once I see them all know exactly what you're talking about ! If Not that's cool too I'll figure it out ! |
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Bardstown,KY | http://www.spraysmarter.com/teejet-quick-nozzle-cap-a3e14106dcb1587... |
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Minnesota | Believe me when I say this I'm not dumb but I'm just not used to this sort of thing Lol. Never had this issue before with my pole type sprayers so I am sorry for bugging you about this ! |
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Minnesota | What does the gauge look like ? The one that connects to the nozzle I mean
Edited by Farmersideburns 6/15/2016 21:36
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SE ND | This doesn't seem to be adding up. I had my 854 act very strange one time, sort of similar to what your experiencing. Go through your monitor and make sure your sections are set to the right width, a section got changed on mine one time and it took awhile to figure out why it was so far off even though the monitor read correctly. Also do a seed cal or verify the speed on your sprayer control is the same as a gps or another read out of some sort. Also is your nozzle spacing 20inches? That's what the nozzle sizing charts are based on. I always run with the valve for the boom wide open, I was told only close it for very small rates, I run 7.5 to 15 gal and never touch it. Also have you checked your screens to make sure something isn't plugged or restricted? Just some thoughts. |
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Rivers, MB | At 12 mph and 10 ga per ac, you should have 40 psi. According to the chart at least. But that's based on 20" spacing. Any chance your boom has the nozzle on 15" spacing? Then with 04 nozzles, you would have lower pressure. |
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Garland Maine | There are two pressure senders on the sprayer. One sensor is right above the pump, and one is on the boom plumbing in the middle of the boom tree. If the pump pressure much higher than the boom pressure you may have a plugged filter, or some other restriction. To determine which sender shows on which gauge just unplug one and see which gauge reads zero.
As someone already said the pressure is running right for the o3's. Could be something electrical where a bad connection or sender unit doesn't report 40 psi right, but does report 80 psi right.
You say you are new to Rogators, but have you had a rate controller like the Raven before? These rate controllers don't care about the pressure. They have a flow meter which is next to that green handled knob on back you are fiddling with. The flow meter measures how many gallons go to the booms. The speed sensor (radar) measures how fast you are going. The rate controller takes that information combined with which booms are on and adjusts the pump speed (not pressure) to give you the desired rate.
With that combination you should not try to play with the "throttle valve" or the manual pressure regulator knob. Let the expensive electronics do their job, and you just turn the steering wheel ;)
My opinion is to do a calibration verification on your sprayer, and if the flow meter and radar check out then run it and don't fiddle with too many things.
I could never trust the sticker on the tank gauge to be accurate enough for calibration. Run the sprayer until empty, put in a known quantity of water, and check if the flow meter records it properly.
Take a measured distance and verify the distance travelled.
If both of those check out take a look at your spray pattern and make sure it is spraying evenly across the boom. If the middle nozzle and the end nozzle put the same amount out in a minute than just get to spraying and figure out the pressure mystery some other time. |
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Minnesota | Catfan1 yes I have checked all my screens for buildup and the nozzle spacing is at 20 inches. my speed on the Raven is exactly the same as my gps speed. So that big valve going to the booms should be open completely? When I bought the sprayer that valve was roughly at " 2 o'clock" I haven't touched the valve with the green handle but who knows whoever had it before me maybe they were messing around with that I'm not sure it's confusing lol |
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Minnesota | Thanks rollinsorchards! I appreciate the advice! Had a lot of rain up here so I got some time to run some tests Lol. I haven't messed with that little green valve since I got the rogator but who knows if the previous owners were messing around with it Should that big 2 inch valve that controls whoa to the booms be wide-open ? When I bought the machine the valve was roughly "2 o'clock" Not sure if I should be messing with that or not |
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Garland Maine | Open that valve wide open and let the computer handle the rest. |
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Spray pressure problems 1074 ss rogator
