Operators Manual

Operation VP 1340A/VP 1550A
wpm_tx001087gb.fm 19
4.6 Operation
Run the engine at full throttle and allow the plate to pull itself along at
its normal speed. When operating on an incline it may be necessary to
assist the plate by pushing it forward slightly. When operating downhill
hold the plate back slightly, if it begins to pick up speed. Depending on
the material being compacted, three or four passes are recommended
to achieve the best compaction.
While a certain amount of moisture in the soil is necessary, excessive
moisture may cause soil particles to stick together and prevent good
compaction. If soil is extremely wet, allow it to dry somewhat before
compacting.
If soil is so dry as to create dust clouds while operating plate, some
moisture should be added to the ground material to improve
compaction. This will also reduce service to the air filter.
For compacting asphalt, use a water tank to wet the asphalt and the
underside of plate. This will prevent asphalt material from sticking.
Two passes are usually sufficent to ensure good compaction.
When using the plate on paving stones, attach a pad to the bottom of
the plate to prevent chipping or grinding surface of stones. A special
polyurethane pad designed for this purpose is available as an optional
accessory.
NOTICE: DO NOT operate the plate on concrete or on extremely hard,
dry, compacted surfaces. The plate will jump rather than vibrate and
could damage both the plate and the engine.