D41 34
2. Malfunctions
2.1 Problems during paving
Wavy surface
("short waves")
- change in the material temperature, demixing
-
wrong material composition
incorrect operation of the roller
incorrectly prepared foundation
long standstill times between loads
grade control reference line is not suitable
grade control jumps to the reference line
grade control toggles between up and down
(inertia setting is too high)
bottom plates of the screed are loose
bottom plates of the screed are warped or not uniformly worn
screed is not operated in the floating position
too much play in the mechanical screed link/suspension
paver finisher speed is too high
augers are overloaded
- changing material pressure against the screed
Wavy surface
("long waves")
- change in the material temperature
-
demixing
roller has stopped on the hot material
roller has turned or roller speed has been changed too fast
incorrect operation of the roller
incorrectly prepared foundation
truck brake is applied too tight
long standstill times between loads
grade control reference line is not suitable
incorrect installation of the grade control
limit switch is not correctly set
screed is empty
screed has not been switched to the floating position
too much play in the mechanical screed link
auger is set too deep
auger is overloaded
changing material pressure against the screed
Cracks in the layer
(over the entire width
- material temperature is too low
-
change in the material temperature
moisture on the foundation
demixing
wrong material composition
wrong layer height for maximum grain size
cold screed
bottom plates of the screed are worn or warped
paver finisher speed is too high
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