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John Deere 4 Series Sprayer: System Rinse


Welcome to John Deere sprayers
supplemental spray or full rinse system video segment. In this training session, we’ll discuss
the operation of the four series sprayer rinse system, focusing on the full
solution system rinse procedure and operation. A separate video covers the
boom rinse function. When the same machine is used for more
than one crop application, chemical residue from previous applications can
damage or contaminate the next crops’ application. The four series sprayers are designed with
an integrated rinse system to help our customers prevent chemical cross
contamination. It is important to note that just using
clean water in the rinse system alone may not prevent chemical cross contamination. To help address the possibility of
cross-contamination, the use of a spray tank cleaner with the machine’s rinse system will aid the operator in conducting enhanced clean-out procedures. Precision Laboratories, an industry
leader in spray system clean-out chemistry, formulates two solutions that
are available from John Deere Parts: inside-out is a liquid spray tank
cleaner than emulsifies and bonds pesticide residue to rinse water for
complete purging. Erase is a powerful spray system
cleaner that penetrates and removes dried-on and oily residue in tanks, sprayer
lines, and hoses to help prevent cross contamination. Important note: always read and follow
all safety and use information available in the machine’s operator’s manual,
chemical labels, and MSDS sheets pertaining to all chemicals. Read and follow all PPE recommendations
within these documents. All chemical residue must be disposed of
according to local, state, and federal regulations. This video provides supplemental
material and does not replace the operator’s manual information and safety
instructions outlined within it. A full system rinse should be conducted
when the operator is changing to a different chemical application or crop
type, when the machine will be sitting unused for any period of time, or anytime
the machine has been spraying a chemical that may settle out and harden overnight. To start a system rinse process, the
operator must go into the rinse system setup page located in the GreenStar
display. Select the number of rinse cycles desired –
single, double, or triple – and also the volume of rinse water to use for each
cycle – low, medium, or high. The volume setting uses approximately 20
gallons for a low cycle, 30 for medium, and 40 for high. A triple rinse uses most of a full rinse
tank for that model machine. After the setup, you can select and start
this rinse from the solution command load station by hitting the keypad rinse
button. Then select the full system rinse button
on the micro display, which will start the process, or the process can be started from the
setup page in the GreenStar display by checking the start box. It should be noted if you are conducting a
system rinse with a four series machine that has the manual version
solution system, the rinse process can be accomplished with the same results
but some of the automatic controls are replaced by manual valves that the
operator must position and sequence correctly. Reference the machine’s operator’s manual
for more information. Before starting the rinse, always
remember a spray system can contain hazardous material which can cause
serious injury or death to you or others. Wear the recommended PPE personal
protective equipment per the chemical label and MSDS sheet guidelines. Use the rinse system in an area where
people, animals, vegetation, and water supply, etcetera cannot be contaminated. To rinse an entire system, the solution
tank must be empty and rinse tank should be loaded with enough clean water to
supply the number of cycles chosen on the GreenStar display setup screen. A full system rinse cycle when chosen
will shut the main solution tank supply off. Open flow access from the on-board clean
water rinse tank and start the machine solution pump to route the clean water
flow to the following systems and components in this order: optional eductor tank and lines, agitation circuit which includes a
control valve and lines to agitation nozzles located in the bottom of the
solution tank, bypass system which is used during
loading of the solution tank when pulling on, solution tank which is cleaned by use of
supply to rinse nozzles located in the top of the tank, and then strainers, flow meters, and
plumbing out to the boom. Here’s a demonstration of a rinse cycle. The machine should be at an idle. The
operator can then select the ENTER button from the micro display at the
load station or the check box in the GreenStar display setup screen in the
cab. The engine RPMs will automatically
increase. The solution pump will ramp up and start
routing the clean water flow from the rinse tank through the system components
as discussed previously. When rinsing the eductor, the operator
must manually open the eductor rinse and sump valves when the display shows
that portion of the rinse cycle is being supplied. Starting the rinse from the load station
would be preferred in this case so the operator has immediate access to the
eductor controls. The micro display and the GreenStar
display setup page both will show where in the process the rinse is by a box
surrounding that step. During the rinse process, the operator
can press the Advance button on the micro display to skip to the next step
if desired. Also the cancel button on the display or
the rinse button on the keypad can be used to stop the automatic rinse cycle
at any time. When the solution tank rinse cycle is
reached and completed, an alert screen will warn the operator to spray out the
rinse water. You should unfold the boom and spray
rinse solution in a safe location where contamination cannot occur. To do this press the solution pump
switch to engage the solution pump. Verify the boom sections to be used are
enabled by section switches on the armrest side console. Press the master spray switch on to
start spraying rinse water. This is when the boom and nozzles will be
rinsed. See boom rinse only section in the
operator’s manual and video for proper boom rinsing. When you are finished spraying off rinse solution and the solution pump runs dry, a warning to shut off the pump will
appear on the GreenStar display. When the pump is shut off and warning is
acknowledged, the system automatically disables spraying and begins the next
cycle if programmed with a double as the number of rinses chosen in setup. The same sequence holds true if a triple
rinse was set up once the second rinse is completed. Special note: the triple rinse selection
is not applicable to R4045 machines equipped with load command. If a single number of rinses is chosen,
the warning screen will display that the solution pump is running dry and to shut
off the pump. Engine RPM will revert to the previous
level when solution pump is turned off if the throttle position has not been
adjusted. All of our four series sprayer booms come
equipped with boom section aspirators located on the outer two nozzles of each
section. The addition of this feature helps
remove air pockets from the boom. However, chemical build up in aspirator
is can occur if not cleaned out thoroughly and regularly. To clean, close all nozzles except the
aspirator nozzles. Remove the nozzle tip on each end of the
boom sections during the boom reasons as demonstrated. Ensure pump pressure is at 60 to 80
PSI and turn on one to two sections at a time to flush them out. Then open up the other nozzles to ensure
the boom nozzle bodies and tips are properly rinsed. Note: inspection of the boom pipe
internally for cleanliness may be necessary with certain products
and sensitive crop types. If the sprayer is equipped with the boom
air purge option, to finish purging and rinse residue from the boom plumbing
choose the boom air purge button from the run page on the GreenStar display. Then, follow the on-screen directions to
use the onboard air system to blow the remaining residue out of the boom and
nozzles. It is recommended to only purge two
sections at a time for maximum air supply cleaning. Consult the machine operators manual for
more information. A clean solution system is imperative
for correct machine usage in application. Performing a good system rinse of the
sprayer can help avoid chemical crop damage and will also help extend the
life of many components on the machine. We hope this short video was helpful. Please use the feedback loop for
additional comments and suggestions. Always read and follow all safety and
use information available in the machine’s operator’s manual, chemical
labels, and MSDS sheets pertaining to all chemicals. Always follow all local, state, and
federal regulations dealing with handling and disposal of chemicals and
chemical residue.

Bernard Jenkins

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