Allied 300, Technical Manual, Page: 34 / 66

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
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CAUTION
Risk of eye injury from flying
debris. Wear eye protection
when operating or servicing
this equipment.
CAUTION
Noise hazard. Exposure to high
noise levels may cause hearing
loss. Wear hearing protection
when operating this equipment.
CAUTION
Never activate the Ho-Pac unless the
operator is seated in the operator’s seat
and in full control of the machine. Refer
to carrier’s instructions.
CAUTION
Keep personnel away from the
Ho-Pac while in operation.
Never operate the Ho-Pac with
workers in close proximity to
the Ho-Pac.
1. Clear all personnel from the work area.
2. Position carrier in-line with direction of
work.
3. Position the Ho-Pac parallel to the work
surface and within view of the operator.
The compaction plate must be in full
contact with the work surface for
maximum effectiveness.
4. Activate the Ho-Pac with the switch
located in the operator’s cab.
5. Apply boom down force with the carrier
to stretch spring mounts approximately
one-half (1/2) their width.
NOTE :
Overstretching the rubber springs
causes premature failure.
6. As the material compacts, maintain a
constant down force with the carrier. For
larger areas, decrease boom down-
force and slide the compactor over the
material with a repetitive, back and forth
motion. The initial pass is continued until
compaction is no longer apparent,
typically 10 to 15 seconds.
7. Repeat compacted lifts as necessary to
achieve finished grade. Optimum
compaction is usually obtained with two
passes. The duration of the initial pass
is dependent on depth and material. The
second pass may require additional fill
material and Ho-Pac repositioning to
achieve finished grade.
8. After compaction is complete, re-
position the Ho-Pac and/or carrier to
continue working.
NOTE
: It is not necessary to stop the Ho-
Pac for minor carrier boom re-positioning.
Optimum lift height depends on soil content,
compaction desired, and vibration time.
Many factors, including variations in
operator technique can produce different
results. Other factors include -
Compacted densities are reduced at the
bottom of excessively high lifts. It may
be necessary to try different lift heights
to determine the most effective lift to
achieve the desired level of compaction.
Compaction is affected by material type.
Soils with 50% or more granular content
are the most responsive to vibration
compaction.
Optimum moisture content is also critical
to achieving maximum compacted
densities of fill material. Fill materials
may need conditioning prior to
compaction.
NOTE: Further information is available in the
“Compaction Manual”. For a copy, contact your
local dealer or Allied’s Customer Service. Ask
for part number 103392.