30-3
THE BOOM
Roll Cylinder
The roll cylinder (C) extends and retracts to pro-
vide the “roll” functions of the Norac system.
The roll cylinder is activated automatically when
the Norac is in the auto mode or when the operator
manually activates the roll functions through the
Hagie controls.
The top portion of the cylinder (A) provides the
spring and shock functions. The bottom portion of the
cylinder (B) is the active portion.
A
B
Proximity Sensors
There are external proximity sensors located at
the 70/90ft vertical fold and the 90/120ft fold. The mo-
tions of the boom (folding and unfolding) are guided
by the measured position of the different cylinders.
The sensors are positioned at the factory and
should not require any calibration. If you experience
any issues with boom positioning, contact Hagie Cus-
tomer Service for assistance.
C
Summary of Contents for UpFront 120
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