Mark the upper boundary of the liquid spray zone on the glass with a water-soluble marker: size "a" = 420±50 mm. The installation size is measured from the nozzle.
Adjust the height of the spray zone in front of the "arrow" nozzle. Its spray zone does not correspond to the specified one, this means that the nozzle is dirty and needs cleaning.
Cleaning the nozzle
Remove the nozzle. Rinse the nozzle with clean water in the opposite direction. To remove residual dirt, the nozzle may only be blown in the direction opposite to the spray. If the spray zone still does not correspond to the specified one, replace the nozzle.
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