Hardi ZENIT, Instruction Book

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5 - Ope r a tion
5.11
ATTENTION! It is advisable to increase the forward speed (double if possible) and reduce the pressure when spray-
ing diluted remaining liquid on the crop just sprayed.
ATTENTION! If a cleaning procedure is given on the chemical label, follow it closely.
ATTENTION! If the sprayer is cleaned with a high pressure cleaner, it is recommended to lubricate the entire
machine.
1. Dilute remaining spray liquid in the tank with at least 10 parts of water and spray the liquid over the crop you have just
sprayed.
2. Select and use the appropriate protective clothing. Select detergent suitable for cleaning and suitable deactivating
agents if necessary.
3. Rinse and clean sprayer and tractor externally. Use detergent if necessary.
4. Remove suction and pressure filters and clean. Be careful not to damage the mesh.
5. With the pump running, rinse the inside of the tank. Remember the tank roof. Rinse and operate all components and
any equipment that has been in contact with the chemical. Before opening the distribution valves and spraying the liq-
uid out, decide whether this should be done on the crop again or on the soakaway.
6. After spraying the liquid out, stop the pump and fill the tank 1/2 full with clean water. Note that some chemicals
require the tank to be completely filled. Add appropriate detergent and/or deactivating agent, e.g. washing soda or Triple
ammonia.
7. Start the pump and operate all controls enabling the liquid to come in contact with all the components. Leave the
nozzles until last. Some detergents and deactivating agents work best if left in the tank for a short period. Check the
label.
8. Drain the tank and let the pump run dry. Rinse inside of the tank, again letting the pump run dry.
9. Stop the pump. If the chemicals used have a tendency to block nozzles and filters, remove and clean them immediate-
ly.
10. Replace all the filters and nozzles and store the sprayer. If, from previous experiences, it is noted that the solvents in
the pesticide are particularly aggressive, store the sprayer with the tank lid open.
Clean filters ensure:
• Sprayer components such as valves, diaphragms and operating unit are not hindered or damaged during operation.
• Nozzle blockages do not occur while spraying.
• Long life of the pump. A blocked suction filter will result in pump cavitation. The main filter protecting sprayer components is
the suction filter. Check it regularly.
Clea nin g a n d ma int e n a nc e o f f i l t e rs
Clea nin g t he t a nk a n d l i q ui d s y st em