Technical Residue - Hardi NK SB Series Instruction Book

5 - Operation
9. Close the lid and activate the container rinsing valve to clean the hopper inside.
10. Shut off all four valves on the ChemFiller again.
11. Turn the agitation valve towards "to pump" for 3 minutes to clean the fluid lines.
12. Verify that all nozzles are shut at the main ON/OFF.
13. Turn the pressure valve towards "Spraying".
14. Allow the liquid in the main tank to circulate for minimum 3 minutes with the nozzles shut. This is done to clean the
return lines from boom to tank.
15. Turn the pressure valve towards "Tank cleaning nozzle". Allow the liquid to circulate for 3 minutes.
16. Spray out water with cleaning agent and chemical residue. Set the spray pressure at 3-5 bar. Note that the washing
water still contains active chemical and choose an appropriate area to spray this out. Alternatively, the washings can
be dumped at the filling/washing location and retained in an appropriate receptacle (e.g. slurry tank or similar) - see
the section "Filling/washing location requirements" for more information. Spot contamination and accumulation must
be prevented. Continue to spray until all liquid has exited from the boom tubes and nozzles.
17. Shut off all nozzles by the main ON/OFF.
18. Rinse the sprayer again with clean water to rinse out all remains of the cleaning agent - see the section "Use of Rinsing
Tank and Rinsing Nozzles (Optional)" on page 80". This to prevent that the cleaning agent remains in the fluid system,
which could damage the next spray chemical filled into the main tank.
19. Include rinsing of the ChemFiller in step 8 and 9. Operate all 4 valves during this process.
20. Dismantle all filters (suction, pressure, in-line and nozzle filters) and clean the filter screens using clean water and
detergent.
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WARNING! It is the responsibility of the sprayer operator or owner, that the sprayer is cleaned sufficiently to prevent
contamination of the environment, crop damages and health and safety hazards to the operator and the public.
HARDI cannot be held responsible for any damages or incidents related to insufficient cleaning.
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ATTENTION! The rinsing nozzles cannot always guarantee a 100% cleaning of the tank. Clean manually with a high
pressure cleaner afterwards, especially if crops sensitive to the chemical just sprayed are going to be sprayed
afterwards!

Technical Residue

An amount of spray liquid will inevitably remain in the system. It cannot be sprayed properly on the crop, as the pump takes
in air, when the tank is just about empty.
This technical residue is defined as the remaining amount of liquid in the system, when the first clear pressure drop appears
on the pressure gauge.
The residual dilutable volume is approx. 6 litres. See the section "Technical Specifications" for more details.
The residues in the tank should be diluted immediately in a ratio of 1:10 with clean water. Afterwards it should be sprayed
on the crop just sprayed with increased driving speed.
In addition, also pump, linkage and armature can be separately rinsed with water from the rinsing tank. However, it must be
ensured that the liquid in the spray lines are in unchanged concentration. Therefore there should be an untreated field area
available to spray this liquid out.
Follow national regulations when disposing of chemical residues.
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