9
DO NOT SUSPEND THE COMPACTOR IN THE AIR
DURING THE WARM-UP PROCEDURE.
THE COMPACTOR MUST BE PLACED FLAT ON
THE GROUND WITH A VERY SLIGHT DOWN
PRESSURE TO KEEP IT IN PLACE. WHEN AMBI-
ENT TEMPERATURES ARE BELOW FREEZING,
SUSPENDING THE COMPACTOR IN THE AIR
WITHOUT FIRST WARMING IT UP MAY CAUSE
THE SHOCK MOUNTS TO CRACK.
FAILURE TO FOLLOW THESE PROCEDURES
WILL VOID COMPACTOR SHOCK MOUNT WAR-
RANTY.
GENERAL INSTRUCTIONS
The compactor is a device that uses available force to
the best advantage. The DYNAMIC FORCE of the mass
weight assembly, turning at a high rpm, produces a vibra-
tory force, and with controlled placement, an impact force.
The DOWN PRESSURE of the carrier on the compactor
gives a high static pressure which assists in the compac-
tion or driving. The vibration frequency is controlled by the
hydraulic flow input to the compactor and is optimized for
use in granular soils. The rate and density of compaction
depends on such factors as moisture content of the soil,
condition of the compactor and carrier, and the skill of the
operator.
Efficient compactor performance is directly re-
lated to the flow rate specified. A higher flow rate
does not improve performance. It results in fluid
overheating, and contributes to early bearing
failure. A lower flow rate causes reduced com-
paction performance.
The HS3000 Compactor delivers up to 3,400 lbs/1,542 kg
of vibratory force. Its base plate covers a 17.5 x 20 in./44
x 51 cm area. It comes standard with a flow control to pre-
vent overspeeding.
COMPACTION
GENERAL
The following instructions are very important to the proper
performance of the compactor and the attainment of the
specified compaction density.
With a standard baseplate, the compactor is held with
full down pressure for no more than 5-10 seconds. The
application pattern should always begin next to a bank or
footing and at the previously compacted area. When the
maximum attainable density for that particular soil condition
is reached, a slight increase in vibration will be felt by the
operator. This increase in vibration is in no way harmful to
the tractor, and indicates that the soil will not compress any
further. In fact, additional time in that location may actually
loosen the soil previously compacted.
Work as much area as possible from one position and
overlap each compacted section slightly. The vibration
frequency has been chosen to give maximum efficiency in
granular soils using lifts of 2 to 4 feet. The closer the width
of the trench is to the width of the compactor, the higher the
delivered compactive effort.
It is necessary to turn the compactor OFF when being
transported or sitting idle. Should the running compactor
be placed on a hard surface without down pressure, the
unit and the carrier will vibrate excessively. Down pressure
transmits the vibration to the soil; neutral pressure will rattle
the whole carrier assembly.
SLOPE TECHNIQUE
This method of compaction is of primary interest to a
pipeline contractor seeking high production and efficient
equipment utilization. The fill material is placed at one end
of the trench and allowed to seek its own angle of repose.
Compaction is begun on this angle above, but still near, the
top of the pipe. All fill material is backfilled to this angle and
the compactor is worked up and down the slope. Backfill-
ing, compaction, and resurfacing can be done very shortly
after the pipe is in place.
SOIL TESTING
Compaction density specifications are based on soil sam-
ples of a set moisture content and soil composition. Chang-
ing weather conditions, for example, can alter the moisture
content of the fill being used, and may make meeting the
specifications impossible. It is imperative that frequent and
reliable tests be conducted during application of the com-
pactor to determine the maximum lift that can be used and
still provide the required density. It is important that lifts in
excess of the established test results NOT be used if the
required density is to be achieved and maintained.
DRIVING
Many driving jobs can be done with the compactor. Timber
sheeting, steel and aluminum sheeting, H and I-beams,
soldier piles and guard rail posts. The compactor will drive
OPERATION
IMPORTANT
NOTICE
