Fayat Group Dynapac SD2500C Operation & Maintenance Manual page 335

1.6 Paving with "screed control at paving stop" and "screed charging/relieving"
General
The screed hydraulics can be influenced in three different ways to attain optimum
paving results:
- Paving stop + relief when the paver finisher is halting,
- floating paving when the paver finisher is driving,
- floating paving with screed charging or relieving when the paver finisher is driving.
Relieving reduces the screed weight and increases the traction force.
A
Charging increases the screed weight, reduces the traction force, but increases the
compaction ratio. (To be used with light-weight screeds in exceptional cases.)
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