5
NOTE:
Vibrating too long in a single place can cause concrete segregation.
When the coarse aggregate segregates when placing concrete, shovel out the coarse aggregate
and put it where there is plenty of mortar. Then use the tool on it. Don’t leave coarse aggregate
in the segregated condition.
When concreting a sloped site, always pour from the bottom at the beginning. This way the
weight of the freshly poured concrete and vibration will lead to effective removal of air
bubbles. Conversely, if the pouring is done first from above, the mortar will separate and
eventually slide to the bottom.
TO OPERATE
Using both hands, as
shown in Figures 4a & 4b
firmly holding the throttle
control and either the
included lift handle or
core casing while inserting
the vibrating head into
the poured concrete.
For best results, it is
usually best to keep the
vibrator head vertical at
all times and to avoid
side-to-side movement.
It is generally best to insert the vibrator head into and remove
the vibrator head from the concrete when engine is at idle.
EFFECTIVE LEVELING AND REMOVAL OF AIR BUBBLES
Removal of the air bubble is complete after you have worked the tool throughout each
effective range, the concrete stops shrinking, and the mortar has risen evenly to the surface,
giving off a light appearance. Gently remove the operating tool not to leave holes.
4a
4b
