Cleaning The Tank And Liquid System; Cleaning And Maintenance Of Filters - Hardi MASTER plus HYS Original Instruction Book

5 - Operation

Cleaning the Tank and Liquid System

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ATTENTION! Thorough cleaning of the sprayer is to be carried out when shifting to crops, which are very sensitive to
chemicals just sprayed, or prior to storage for a longer period.
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NOTE! Prior to the described cleaning:
• Carry out a standard cleaning.
• Select and use the appropriate protective clothing. Select detergent suitable for cleaning and suitable
deactivating agents if necessary.
• Rinse and clean the sprayer and tractor externally. Use detergent if necessary.
1. Remove tank and suction filters and clean the sprayer. Be careful not to damage the filter mesh. Put back the suction
filter top. Put back all filters, when the sprayer is completely clean.
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ATTENTION! If the suction filter not refitted after this cleaning job, it will not be possible complete other cleaning jobs,
as the suction filter assists in turning the valve at the bottom of the filter housing.
2. With the pump running, rinse the inside of the tank. Do not forget to clean the tank roof. Rinse and operate all
components and any equipment, which have been in contact with the chemical. Decide whether doing this in the
field or on the seepage location, before opening the distribution valves and spraying the liquid out.
3. After spraying the liquid out, stop the pump and fill at least 1/5 of the tank with clean water. Note that some chemicals
require the tank complete filling of the tank. Add appropriate detergent and/or deactivating agent. Recommended is
special detergents for sprayer cleaning as some also lubricate ball valves, etc.
4. Start the pump and operate all controls enabling the liquid to expose all the components. Operate the distribution
valves as the last thing. Some detergents and deactivating agents work best, if left in the tank for a short period. Check
the chemical label.
5. Drain the tank and let the pump run dry. Rinse inside of the tank, again letting the pump run dry.
6. Stop the pump. If the pesticides used have a tendency to block nozzles and filters, remove and clean them
immediately.
7. Refit all the filters and nozzles and store the sprayer. If noted from previous experiences, that the solvents in the
pesticides are particularly aggressive, store the sprayer with the tank lid open.
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ATTENTION! It is advisable to increase the forward speed (double, if possible) and reduce the spraying pressure to 1.5
bar, when spraying diluted remaining liquid in the field just sprayed.
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ATTENTION! If given on the chemical label, then closely follow the cleaning procedure.
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ATTENTION! Recommended is lubrication of the entire machine, if cleaning the sprayer with a high-pressure washer.

Cleaning and Maintenance of Filters

Clean filters ensure:
• None hindering or damage during operation on sprayer components such as valves, diaphragms and operating units.
• Nozzle clogging do not occur whilst 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.
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