Topcon Paver System 5 - Page 34

Paving Principles & Control Methods
Topcon Paver System Five Operator’s Manual
2-8
These systems, whether of the “hanging paddle” type or the
sonic sensor type, should be adjusted to operate the auger/
conveyor assemblies 95% to 100% of the time. On/off
operation of the auger system will cause fluctuation in the head
of material.
The highest quality mat will generally result when a constant
head of material is maintained across the entire width of the
screed and the material almost covers the auger shaft. If the
volume of paving material is too high, there is resistance to the
travel of the screed. This causes the screed to rise and can result
in ripples, auger shadows and long waves. It also results in
increased auger wear (Figure 2-11).
Figure 2-11. Head of Material Affects Mat
Head of
Material
Too High
Screed Rise
s
Due To
Increased
Resistance
Correct
Head of
Material
Correct Dep
th
of Mat
Maintained
Head of
Material
Too Low
Screed Settl
es
Due To
Decreased
Resistance
C
C
C
C
Indicates Centerline
of Auger