4
LeeBoy 8510E Conveyor Paver 4-37
Operation
Topcon® Sonic and Dual Grade
Control
Sonic trackers continuously measure the elevation over
the surface, automatically averaging and adjusting the
tow point cylinder on the paver. The LCD digital display
is easy to see regardless of light conditions.
Choose from one of three options: Sonic Grade Control
(one side); Dual Grade Control or Dual Grade Control
and Slope (both Topcon P-32 systems). The dual
grade controls automatically maintain a set depth on
both ends of the screed. The Dual Grade and Slope
controls maintain a set depth on one end of the screed
and as et slope to the other end.
Most states require this technology for state road paving
jobs to ensure smoothness and continuity on roadways.
Figure 4-64. Sonic Grade
Control
Topcon® sonic grade
control, dual grade control
and slope options offer
paving professionals
screed control for
improving smoothness
along with assuring
accurate slope and
material thickness. These
controllers send signals
to the screed to precisely
maintain mat thickness
and slope as you pave.
Figure 4-65. Automatic Temperature Control Box
Automatic Temperature Control
Automatic temperature control for heating the screed
is an option that offers additional convenience for
operators, automatically turning the heating elements
on and off to maintain desired screed temperature.
(Figure 4-65)
The green numbers that illuminate on the controller
is the set point temperature. Use the UP and
DOWN arrows to increase or decrease the set point
temperature. The screed temperature appears in red
numbers above the set point temperature. (Figure
4-66)
Increase
Heat
Decrease
Heat
Temperature
Set Point
Temperature
NOTE: DO NOT push other buttons as they
are for service technician access only.
Figure 4-66. Automatic Temperature Controls
Start with a set point temperature of 200° - 250° F
(93.3° - 121° C). The screed runs warmer than the set
point temperature due to heat soak, which is normal, so
it’s better to start with cooler a temperature set point.
The displayed temperature (in red) must fall 25 degrees
below the set point before the heating elements turn on
again.
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