Atlas Copco DYNAPAC Svedala Demag DF 115 C, Operation & Maintenance Manual

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E 01 2
E_0
1_G
B.
fm
. 2-
18
2 Auger
2.1 Height adjustment
Depending on the mix of materials,
when working with layer thicknesses of
up to 15 cm, the height of the distribution
auger (1) – measured from its bottom
edge – should be around 5 cm
(2 inches) above the material layer thick-
ness (depending on its mix of materials).
Example: Layer height 10 cm
Adjustment: 15 cm from the
ground
An incorrect height adjustment can result in the following problems:
- Auger too high:
Too much material in front of the screed; material overflow. When operating with
larger widths, demixing and traction problems may occur.
- Auger too low:
Not enough material that can be precompacted by the auger. Irregularities resulting
from this cannot be completely compensated for by the screed (wavy surface).
In addition, an increased wear on the auger segments occurs.
2.2 Auger crossbeam installed in a fixed
position
- Lower the screed onto a suitable sup-
port (e.g. squared timbers).
- Completely extend both levelling cylin-
ders.
- Hook lifting chains (2) for lifting the au-
ger crossbeam into the hooks of the
crossbeams.
- Loosen the fixing screws (3) of the auger crossbeam.
- Retract the levelling cylinders until the
auger crossbeam has reached the de-
sired height.
- Tighten the fixing screws (3) of the au-
ger crossbeam.
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