PRODEM PHC 050, Operation And Maintenance Manual

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4. Operation
DANGER!
The following section describes a correct use and precautions for compactor operation. These
are the fundamentals for safe operation. So, make yourself familiar with them before initial
use.
IMPORTANT!
If you operate compactor, having it touched a solid ground such as concrete floor or a
bedrock, it would apply very high impact to the compactor, which might result in a serious
damage to the compactor.
4.1. How to use compactor
Place the compactor on the ground you want to compact to be in touch with it uniformly.
Lower the carrier’s boom slowly to press the compactor vertically to the ground. At this time, make it
sure that cushion plate is pressed less than 4 cm. If the cushion plate is pressed more than the
specified limit, it might be damaged or its life might be shortened.
If you operate the compactor, having it touched a very hard object such as concrete floor or bedrock,
it would apply very high impact to the compactor, which might result in a serious damage to the
compactor.
When the ground starts to be lowered by compacting work, lower the carrier’s boom gradually and
keep a constant applying pressure. At this time also, make it sure that the cushion plate is not pressed
too much.
When compacting a wide area, advance working positions sequentially in a uniform direction with
some overlapped area.
Mostly for normal soil condition, proper working time is 5 ~ 10 seconds at once.
Continuous operating for a long time have no more effect on compacting and, on the contrary, may
result in trouble to the compactor.
To obtain optimal compaction of the soil, repeat the compacting work in two or three passes. The
duration of compacting for the later pass can be shorten than initial pass.
★
Do not use for the following objects:
Concrete floor
Bedrock or surface covered with stones
Steel plate
Press down in a
direction vertical
to the ground.
Continous
operating time
should be
limited to 10
seconds or less.
Cushion rubber
(Cushion plate)
Less than
4 cm
Figure 15