horsch 80910205, Operating Instructions Manual

Page: 107 / 218

10.11 Filter
• Use all prescribed filters from the filter equipment. Clean the filters at regular intervals.
Trouble free operation of the crop protection sprayer is only ensured with optimal filtration of the
wash. Appropriate filtering considerably influences the treatment success of the crop protection
measure.
•
Pay attention to the permissible filter combinations or mesh widths.
The mesh widths of self-cleaning pressure filters and nozzle filters must always be smaller than the
nozzle opening of the nozzles used.
• Please remember that the use of pressure filter elements with 80 or 100 meshes/inch will have the
effect that with some crop protection products active components may be filtered out.
If in doubt, contact the crop protection product manufacturer.
The pressure filter prevents contamination from entering into the nozzle line. Different degrees of fineness are
available to suit each application. By standard the filter is fitted with a 80 mesh/inch element.
In case of applications with liquid fertiliser or when using larger nozzles, it is recommended to use a more coarse
element, in order keep the pressure drop inside the filter as low as possible.
The self-cleaning pressure filter prevents clogging of the nozzle filters in front of the spraying nozzles.
In circulation mode (main sprayer switch "off") the inner surface of the pressure filter element is continuously
flushed and non-dissolved spraying product or dirt particles are directed back to the wash container.
The perforated screen prevents larger contaminants from entering into the pump and into the spraying system.
The dome screen / filling screen prevents contaminants from entering into the wash container during filling
through the dome. By standard this screen has a 1 mm mesh width.
Suction filter: The suction filter cleans the water/wash before it enters into the centrifugal pump.
(Mesh width 0.9 mm)
Overview of pressure filter elements
Filter element with 32 meshes / inch (white)
Filter element with 50 meshes / inch (blue)
from nozzle size '03' and bigger
Mesh width: 0.35 mm
Filter element with 80 meshes / inch (grey, series equipment) for nozzle size '02'
Mesh width: 0.20 mm
Filter element with 100 meshes / inch (red)
from nozzle size '015' and smaller
Mesh width: 0.15 mm
10.11.1 Nozzle filter (optional)
The nozzle filters (1) prevent clogging of the spray nozzles.
107