Hardi BL Series, Инструкция

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The diaphragm anti-drip valves ensure instantaneous closing of all
nozzles. In order to close part of the boom, move lever (2) of the
distribution valve to position B (off position) for the section or sections
to be closed. Note that the pressure will rise and readjustment will be
necessary.
Drain valve operation
A drain valve cap is located under the tank. Unsrew it to drain tank. Be
careful not to loose the seal.
Maintenance
In order to derive full benefit from the sprayer for many years the
following few but important rules should be kept:
Cleaning the Sprayer - see Spray Technique book.
Filters
Clean filters ensure :
• Sprayer components such as valves, diaphragms and operating
unit are not hindered or damaged during operation.
• Nozzle blockages do not occur whilst spraying.
• Long life of pump. A blocked suction filter will result in pump cavita-
tion.
The main filter protecting sprayer components is the suction filter
inside the tank at the sump. Check it regularly.
Also regularly check nozzle filters.