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Delta Boom Options
Hydraulic Boom Wing Tilts
Delta booms can incorporate a hydraulic tilt option,
which allows the individual boom sides to be raised
independently when in the working position. This
serves to provide greater variability of boom height
control to compensate for undulating ground
conditions. Boom tilts are operated from a lever or
switch in the tractor cabin depending on hydraulic
system fitted.
The use of tilt cylinders should be kept to a
minimum as the tilt operation affects the balance
of the boom causing rocking of the whole boom
assembly.
Where hydraulic tilts are not fitted, a manually
adjustable link is placed in substitute for the tilt
cylinder.
Delta Boom Operation
Folding Operation
FOLDING PROCEDURE:
1. Starting with the boom in the working position,
use the lever/switch in cabin to raise the boom
fully.
2. Use the lever/switch to fold the boom completely
in.
3. Lower the boom until the boom just touches the
rests
4. Then continue to lower the boom a further 100
mm so as to put sufficient weight onto the rests.
The rests need to be positioned high enough to
allow the boom to lower 100 mm without the
boom resting on the tyres or mudguards.
UNFOLDING PROCEDURE:
The boom unfold sequence is as below:
1. Raise the boom fully to clear the boom rests.
2. Use the lever/switch in cabin to unfold the boom
so that the boom is aligned with the centre section.
3. Lower the boom to the desired height above the
target.
DANGER: Always check for power lines while
folding and unfolding the boom, as contact with lines
can be fatal.
Prairie 1500-3000L Operator's Manual MY17-MY19 - REV 0
Fence Line Jets
Manually operated fence line jets are optional
on these sprayers. The 'fenceline' jet is designed
to enable the operator to spray right up to the
boundary fence without having the boom too close
to the fence.
This should prevent operators from putting the
boom into the fence, especially important when
the boom is relatively new and the operator is not
familiar with the width of the boom. The fenceline jet
should be turned off after the end of the first lap.
NOTE: Booms must not be folded, or unfolded,
while the sprayer is moving. When the boom is
between fully open and fully closed , there can be
large stresses placed on many boom components.
If the sprayer is moving and hits a bump, severe
damage to the boom can occur.
NOTE: The booms must be folded continuously
without stopping and starting during the sequence.
Take care not to fold/unfold booms too fast, as
damage can be caused.
NOTE: To make the boom fold cylinders extend or
compress equally on both sides, continue holding the
'Boom Fold' OUT button or lever once the boom
has fully unfolded or hold 'Boom Fold' IN button or
lever once the boom has fully folded for a few extra
seconds.
Chapter 9 - Delta Boom - 51
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