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IMPORTANT:
1. Always begin filling at low speed until the pump is fully filled with liquid and the liquid flows into the tank. Only increase the pump speed after the pump is completely filled with liquid.
2. The pump speed must not exceed 540 rpm, provided that the water is not more than 250 cm below the pump level (measured perpendicularly). In the case of extra long filling hoses (more than 6 meters) and/or a lift higher than 250 cm, the pump speed must be reduced to ± 475 rpm.
3. When filling the tank from open water (CAUTION: IF ALLOWED), it is important that you do not put the hose into the water until there is suction from the system (pump functioning). When you have finished filling (and rinsing), first take the hose out of the water and then interrupt the suction (throttle back or switch off p.t.o.). Thus you will prevent contamination of the surface water.
There are different tank filling methods. The first option is filling from the mains tap. A special mains (waterline) connection is available for this purpose. Additionally, a special hydrant connection is available.
Of course, the machine can also be filled via the pump with a filling hose. This will produce a high filling capacity and complies with the requirement of being able to rinse with clean water. The pump is self-priming. To fill, couple the filling hose to the external connection of the suction unit. Check whether the main shut-off valve is in the closed position, whether the four-way valve(s) of the suction unit is (are) in the "external suction" position, the circulation
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valve is in the position "return to tank" and whether the pressure selection valve is on "pressureless filling". Now start the pump(s) by activating the p.t.o. shaft.
Another possibility is to fill water from a storage tank that is located higher or by means of a filling pump and external hydrant through the filling hole. When using an external hydrant, avoid any contact between the filling hose and the tank contents. Thus you will prevent sucking back of the spraying liquid. Therefore, always keep the filling hose of a stationary filling unit above the spraying liquid and never put it in.
Quality of water
Always use water as a carrier. The use of mains water is preferable to spring water, surface water or rain water. Water of which the composition is not known, may have harmful effects on the functioning of the crop protection chemical and the machine. The water quality is of utmost importance to the spraying result. Below you will find the major demands of water as a carrier for crop protection chemicals. Some crop protection chemicals will decompose more quickly in water with a high pH value (alkaline water). Most products are stable at pH values ranging from 5.5 to 6.5. Therefore you should spray the liquid as soon as possible after preparation. Never leave a filled tank overnight, if possible, because the crop protection chemicals may have decomposed too much the next day. Too high a percentage of salts in the water may also cause problems, such as leaf burning and the formation of crystals (risk of blockage). Never spray with water of which the EC value (electrical conductivity) is greater than 1 (EC). The water temperature does not affect the result of the crop protection chemical, as long as this temperature is between 9°C and 25°C. If necessary, consult your dealer of crop protection chemicals.
Requirements to water for crop protection (source: DLV Horst)
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