23HARDI® New NAVIGATOR OPERATOR’S MANUALOperationIMPORTANT! If the Select Source handle is turnedto MAIN TANK, the Bag & Bottle Rinse uses dilutedspray solution from the main tank to rinse containersof concentrated chemi cals. Always rinse the chemi calcontainers with clean water several times until they areclean before disposal. Turn the Select Source handle toFLUSH TANK (optional) to use clean water to rinse thechemi cal containers.9 Close valve (CFig 27) again when the hopper isrinsed.IMPORTANT! If the Select Source handle is turned toMAIN TANK, the hopper rinsing device uses dilutedspray solution from the main tank to rinse the hopper ofconcentrat ed chemi cals. Always rinse the hopper withclean water when finished spraying. Turn the SelectSource handle to FLUSH TANK (optional) to use cleanwater to rinse the hopper.10 Close valve (AFig 27) and the chemical hopperlid. Turn the Select Function handle to SPRAYMAX AGI TATION to mix the chemicals in the maintank. When the spray liquid is well mixed, it maybe sprayed on the crop. Leave the Select Functionhandle pointing to the SPRAY MAX AGI TATIONarrow and the Variable Agitation handle pointingdown so the spray liquid is continuously agi tatedwhile spraying.Use of flush tank and rinse nozzles(optional)The incorporated flush tank can be used for twodifferent purposes.A. In-field diluting of remaining spray liquid residue inthe spraying circuit for spraying the liquid in the field,before cleaning the sprayer.1. In order to empty the sprayer as much as possible,turn the Select Source handle turned to MAIN TANK,turn the Select Function handle to SPRAY BYPASSTO SUCTION and turn the Variable Agitation handleto OFF. Spray until air comes out of all nozzles.IMPORTANT! If the sprayer is equipped with acentrifugal pump (ECPC), do not run pump dryfor longer than 3 seconds. Otherwise severedamage to the pump will occur.2. Remove the tank filter basket.3. Turn the Select Source handle to FLUSH TANK andturn the Variable Agitation handle to TANK RINSE.4. Engage and set the pump at approx. 300 r.p.m.5. When rinsing water corresponding to approx. 10times the spray liquid residue is used, turn SelectSource handle to MAIN TANK and operate all valves,so all hoses and components are rinsed.6. Turn the Variable Agitation handle to OFF, turn theSelect Function handle to BYPASS TO SUCTION.Spray liquid in the field you have just sprayed.7. Repeat steps 3-6 until the flush tank is empty.B. Rinsing the pump, operating unit, spray lines, etc. incase of interruption in spraying before main tank isempty (e.g. due to rain, etc.).1. Turn the Select Source handle to FLUSH TANK, turnthe Select Function handle to BOOM FLUSH andturn the Variable Agitation handle to OFF.2. Engage the pump and spray water from flush tankin the field until all nozzle tubes/nozzles are flushedwith clean water.3. Disengage pump and turn Select Source valve to theOFF position.WARNING! The rinse nozzles cannot alwaysguarantee a 100% cleaning of the tank. Alwaysclean manually with a brush afterwards,especially if crops sensitive to the chemical justsprayed are going to be sprayed afterwards.Technical residueInevitably a quantity of spray liquid will remain in thesystem (which cannot be sprayed properly on thecrop) as the pump takes in air when the tank is aboutto be empty. The technical residue is defined as theremaining liquid quantity in the system as the first clearpressure drop on the pressure gauge is read.The dilutable residue must be diluted with 10 times theamount of clean water and sprayed onto the crop justsprayed before cleaning the sprayer - seeCleaning (pp.27-28).Draining tanksMain tank drain valvePull the string at the left hand side of the tank to openthe drain valve. The valve is spring-loaded to closeit, but can be kept open by pulling the string out andupwards in the V-shaped slot (Fig 28).To release and close the drain valve again, pull thestring downwards and the valve will close automati cally.If draining a residue (e.g. liquid fertilizer) into acontainer, a 21 /2” snap-coupler with hose can rapidlybe con nected to the drain valve, and the liquid safelydrained.Fig. 28