Operating
HVZ-uni
V7
18/06/12
30 / 36
HINT:
If the packages are bad or instable, usually caused by bad pallets, paving stones at the side rows
could fall over or fall down while shifting the paving layer direct on the package. In this case lift
the paving layer without shifting, set it down on a suitable ground and shift it there.
HINT:
If the gripping quality is not good enough (layer is tending to break or paving stones in side rows
tend to fall over) keep the side clamp closed until you reach the laying position and open it a short
time before you lay it down.
HINT:
Don not try to „tip“ the paving layers in side clamping direction with the already laid paving stones.
This is not possible, because the paving layers in the clamp are compressed and the already laid
paving stones are unconsolidated. It is better to either remove the “key-stones” before laying and
later bring it back or lay additional paving stones after the complete laying process.
●
Before lifting the paving layer with the support vehicle, move the support point 5-10 cm in direction of
the laying side main gripper either using the boom (excavator) or driving the installation machine.
Afterwards the paving layer can be lifted vertically.
●
Transport the paving layer to the laying position swinging the boom (excavator) or driving the
installation machine.
●
Place the paving layer 5 cm in direction to the open laying ground until the rollers touch the already
laid paving stones.
●
Move the paving layer diagonally to the corner of the laying edge and take care of the correct
connection to the already laid paving stones.
●
Set the paving layer down until the support chains sag lightly.
●
Open the main grippers for 2 seconds. At first the hydraulic cylinder of the pushing off device will
retract and the first row of paving stones will obtain the accumulated elastic force. The opening
sequence of the main clamp happens after the complete extension of the ADV cylinder and the paving
layer is laid in the grade. The paving stones are pressed down from the ADV bar.
●
Move the support point 5-10 cm in direction of the facing bedding sand side main clamp.
●
When you lift the HVZ uni it will swing automatically in direction of the facing bedding sand (facing
bedding sand side main clamp), away from the already laid paving stones. So it is possible to lift the
HVZ uni without removing paving stones of the front row.
●
Open the main clamp completely and close it immediately for 1 seconds while moving the installation
machine to the next paving layer. The closing sequence of the main clamp causes the hydraulic
cylinder of the ADV to extend and the spring pack is loaded.
●
The installation clamp HVZ is ready for the next laying cycle.
7.4
General hints for laying according to standards
After the laying process is done it is necessary to move the new laid paving stones a little bit in direction of
the facing bedding sand (the best way for the operating personal is to use his feet). This is the only way to
achieve a standard joint (3 – 5 mm). If it is necessary to start with manual laying before you can use the
installation clamp, take care that the grid system of the paving layers is correct. Do not manipulate the joints
with the rubber hammer, because the result will be a non-standard paving area.
