Construction and function of the sprayer boom
6.14
Pressure circulating system (DUS) (optional)
•
For normal spraying operation, the pressure circulating system
should usually be switched on.
•
When using drag hoses, the pressure circulating system should
usually be switched off.
The pressure circulating system
•
enables the constant circulation of liquid in
the spray line. For these purposes, a suc-
tion port hose (Fig. 122/1) is assigned to
each part width section.
•
enables operation using spray liquid or
flushing water, as desired.
•
reduces the undiluted residue for all spray
lines to 2 l.
The constant circulation of liquid
•
enables production of an even spray pattern
right from the start, because spray liquid is
available at every spraying nozzle immedi-
ately after the sprayer boom is switched on,
with no delay.
•
prevents damage to the spray line.
Fig. 122
The principal components of the pressure
circulating system are:
•
one suction port hose (Fig. 122/1) per part
width section.
•
the DUS switch tap (Fig. 123/1).
•
the DUS pressure relief valve
(Fig. 123/2). The DUS pressure relief valve
is permanently set at the factory and reduc-
es the pressure in the pressure circulating
system to 1 bar.
→
If the DUS switch tap is in position (Fig.
123/A), the pressure circulating system is
switched ON.
→
If the DUS switch tap is in position (Fig.
123/B), the pressure circulating system is
switched OFF.
→
If the DUS switch tap is in position (Fig.
123/C), liquid can be drained from the field
sprayer.
Fig. 123
UX Super
BAG0054.10 11.16
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