Reversible vibratory plates Operating instructions
side 11 edition 06/2009
1.9 Disposal of the Packing Material
The company of NTC STAVEBNÍ TECHNIKA spol. s r.o. is registered with the EKO-KOM a.s. company.
This means that there is a contract between EKO-KOM a.s. and NTC STAVEBNÍ TECHNIKA spol. s r.o.
on repurchase of all kinds of packing materials either by NTC or by suppliers of the packing materials.
1.10. Special conditions of operation
1.10.1. Operation at low ambient temperature
Compaction at temperature below freezing is highly dependent on water content in the soil to be
compacted. Under such conditions, soil becomes harder and more difficult to compact. It is possible to
compact dry materials or rapidly compact fresh soil, before it gets frozen.
1.10.2. Operation at high altitudes
With increasing altitude, engine power decreases due to changed oxygen content. Within certain extent,
it is possible to improve the engine power by installing different main nozzle and by adjusting the
carburetor (gasoline engines) or by adjusting the injection system (diesel engines). Should the machine
be operated in high altitudes (above 1500 m above sea level), contact the engine manufacturer to carry
out the adjustments.
In case that you intent to operate the machine in high altitudes in the time of purchase, consult the
manufacturer.
1.10.3. Operation in Dusty Environment
In case that the machine is operated in extremely dusty environment, it is recommended to shorten the
service intervals for cleaning or replacement of the air filter.
Clean the machine from dust regularly.
2. TECHNICAL DESCRIPTION
Our Reversing Vibration Plates are intended for the compacting of all kinds of soils, ditches, various
surfaces as well as for compacting paved surfaces.
The centrifugal force of the vibrator is optimized according to the weight of the machine and the size of
the working surface in order to achieve high compacting performance.
The VDR Series vibration plates are provided with a directional vibrator. Step less shifting of the mutual
position of the unbalanced elements leads to the change in the direction of the resultant centrifugal force
which further results in smooth change of the machine travel forwards and backwards or in operating the
machine without any travel. The compacting part is the bottom plate with the vibrator. The base of the
engine is resilient-mounted on the plate. The vibration plate is driven by a four-stroke single-cylinder
engine. The frequently used engines are the HONDA petrol engines and the HATZ diesel engines. The
engine is connected with the vibrator with a V-belt. The transmission of the torsional moment (T.M) is
interrupted (during idle run of the engine) by a centrifugal clutch on the engine shaft.
The operator controls the machine using a resilient-mounted tilting handle with two levers – travel lever
and throttle control lever. If the engine is electronically controlled, the throttle control lever is replaced by
an idle-speed and working-speed switch.
Special accessories for VDR 22 and VDR 26 can include a special undercarriage to transport the vibration
plate and a buffer plate.
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