The paver shall be properly adjusted to the asphalt or water front floating gauge
Water stability 15 degrees elevation, higher than the paving thickness of about 5cm fine-tuning. As long as you have the thickness of the paving, the coefficient of paving can be calculated above exactly 0.5/1/5cm after it is ok. Rise or fall, as you say. If the automatic leveling device is installed, it is possible to observe if there is a large fluctuation of the road surface. If not, the automatic leveling is indicated. If it doesn't work.
Paver paving asphalt with water steady elevation is not the same, paving asphalt when the elevation of 7 degrees, you can see the end of the ironing board, hammer side higher than the paving thickness of 0.5-1cm, and then fine-tuning.
That may be automatic leveling control valve block is choking, in the automatic leveling valve block, there is a spool. You can use a cross screwdriver to reset the top. If it can be solved. That need to wash dirty spool. Hydraulic oil should also be considered for replacement. General valve block cleaning can be resolved!
