SECTION 7 –
SPRAY SYSTEMS
7-16
on the pendulum assembly at this point. The
hydraulic valves and cylinders will not stop
this from occurring.
Proximity Sensors
External Proximity Sensors are located at
the 70-ft. fold. The motions of the boom
(folding and unfolding) are guided by the
measured position of the different cylinders.
NOTE: The Proximity Sensors are factory-
positioned and should not require
calibration. Contact your local John
Deere dealer if boom positioning
assistance is needed.
NORAC Sensors
The boom is equipped with five (5)
NORAC Sensors (two located at each folding
section, two located on each outer boom
extension, and one located on the transom)
that measure boom height above ground.
The sensors send a signal to the NORAC
control system allowing for position
corrections to keep the boom parallel to the
ground and the crop, giving you a more
consistent spray pattern.
Position Sensors
The level cylinders and main fold
cylinders are equipped with Position
Sensors. These sensors measure the linear
stroke of the cylinder, allowing the boom to
be positioned correctly when in Auto Fold
mode.
The required specific motions exist to
provide smooth, efficient operation. The
programmed positions help prevent
Roll Cylinder
-Typical View
Proximity Sensors
-Typical View
CAUTION
Placing an object beneath the NORAC
Sensors when the system is in automatic
mode may result in unintended
movement.
NORAC Sensor
-Typical View
Summary of Contents for STS 10
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