Full Internal Rinsing - Hardi COMMANDER 4500 Operator's Manual

5 - Operation
A. Full internal rinsing
In-field diluting of remaining spray liquid residues in the spraying circuit for spraying the liquid in the field, before cleaning
the sprayer.
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NOTE! This rinsing is adequate/sufficient when the sprayer is going to be used again shortly (e.g. next day) in same or
similar crops (no risk by cross contamination and subsequent crop damages).
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WARNING! If the next crop to be sprayed is sensitive to the latest chemical used, then a full cleaning should be carried
out. See "D: Full internal cleaning (Soak wash)" on page 60.
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WARNING! Never clean the sprayer if there are risks of contamination of surface or underground water! Choose a
different spot for cleaning every time to avoid spot contamination to build up.
This rinsing procedure will rinse the spraying circuit and main tank as follows:
1. Empty the sprayer as much as possible. Close the agitation valve (no agitation). Allow the pump to run for at least 1
minute after the liquid fan from the nozzles has collapsed to ensure that all relevant liquid has been expelled.
2. Shut off all nozzles with the main ON/OFF button on the grip.
3. Turn suction SmartValve to "Rinsing tank" and pressure SmartValve to "Spraying". Set agitation valve to "Full agitation".
4. Engage and set the pump at approximately 300 rpm.
5. Use 1/3 (approximately 40 gal or 150 l) of the rinsing tank contents at this valve setting.
6. Close the agitation valve and turn the pressure SmartValve to "TurboFiller" for at least 3 seconds without activating the
TurboFiller to burst and flush the safety valve. The TurboFiller is not flushed by this operation.
7. Turn suction SmartValve to "Main tank". Engage the auxiliary pump (FlexCapacity configurations only). Set the spraying
pressure at 45-75 psi (3-5 bar). If the pressure is set outside this range the rinsing result may be insufficient.
8. Open all nozzles and spray the rinsing water from the main tank through the nozzles while driving in the field. Choose
a different location each time to distribute the rinsing water over larger areas. Continue until all fluid is expelled from
the boom tubes and nozzles - this may take several minutes after the spray fan has collapsed.
9. Shut off all nozzles by the main ON/OFF switch on the grip.
10. Turn the suction SmartValve to "Rinsing tank" and the pressure SmartValve to "Internal tank rinsing". Use another 1/6
(approximately 20 gal or 75 l) for this. The tank strainer should be removed to avoid shading for the rinsing nozzle.
11. Turn the suction SmartValve to "Main tank" and the pressure SmartValve to "Spraying". With the nozzles shut, allow the
liquid to circulate for a minimum of 30 seconds to flush the return lines from boom to tank.
12. Open all nozzles by the main ON/OFF switch and spray the rinsing water from the main tank through the nozzles until
all liquid is expelled from the boom tubes/nozzles.
13. Repeat step 9-12 another 3 times using 1/6 (approximately 20 gal or 75 l) of the rinsing tank contents in each of the 3
sequences until the rinsing tank is empty.
14. Shut off the nozzles at the main ON/OFF button once the rinsing process is complete.
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