Fayat Dynapac F80W, Operating Manual

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98 F80W
47
47
451092
451094A
A
H
α
α
H
4
3
1
2
451704
2.6 Operation of the screed
2.6.4 Setting the paving thickness
By setting the paving thickness, we can set a variable paving
thickness in the range from 5 to 100 mm (0.2 – 3.9 in).
The maximum allowed difference in the paving thickness (H) on
the left and right side of the machine can be 40 mm (1.6 in).
The paving thickness is set by setting the pitch angle of the
screed.
The pitch angle is an angle between the base of the screed and
the surface of the subgrade in the longitudinal direction of ma-
chine travel.
A larger pitch angle will cause a higher lift and this will cause
a greater paving thickness.
To create a layer with the right or left crown (A), set a different
paving thickness on both sides of the machine using the paving
thickness controllers (47).
Procedure for setting the paving thickness:
• To increase the paving thickness on the left or right side,
turn the paving thickness controller (47) in the clockwise
direction.
• To decrease the paving thickness on the left or right side,
turn the paving thickness controller (47) in the anti-clock-
wise direction.
• During paving of the material check the setting of the pav-
ing thickness on the left and right side by checking the po-
sition of the paving thickness indicator (1) on the paving
thickness scale (2).
Note
The paving thickness scale (2) is only used for informative meas-
uring and the actual paving thickness must be measured be-
hind the machine.
Every change in the paving thickness is manifested with a delay
(after driving 2 – 6 length of the screed tow arms).
Procedure for setting the screed tow arms:
• The quantity of the material delivered to the area of augers
can be affected by setting the screed tow arms depending
on the grain size of the paved material.
Grain size 0 – 25 mm:
• The screed tow arms must be set in point (3).
Grain size 25 – 35 mm:
• The screed tow arms must be set in point (4).
When setting the required paving thickness, no one is al-
lowed in the hazardous area of the machine.
There is a risk of injury from the movement of the screed.
When setting the screed tow arms, there is a danger of
injury caused by movement of the tow arms.
There is a risk of burns from the hot parts of the screed.
When setting the screed tow arms, use the prescribed
protective equipment.
The paving thickness scale (2) is only used for informa-
tive measuring and the actual paving thickness must be
measured behind the machine.