Surtek VCG765 Manual De Usuario página 18

OPERATION
To obtain the greatest possible benefit from
your vibrator the following observations are
suggested; Before casting:
• Have the equipment already prepared and
tested to eliminate any possible faults.
• Check the vibrator assembly for any loose or
improperly placed part to prevent penetration
of water inside.
• Check the correct coupling of the vibrator as-
sembly to the engine.
• Check engine start.
• Vibration check of the dry set, if the head
does not vibrate, it will have to give a slight
blow to the tip of the same to generate the
oscillation.
In casting:
• Place the concrete inside the frame in layers
of 30 to 50 cm before starting the vibration.
• It is recommended that in case of deep
cramps a drop tube is placed in the placement
of the concrete.
The concrete vibra-
tor descends during
vibration inside the
concrete by its own
weight making verti-
cal penetrations to a
depth of 8 to 10 times
the diameter of its vi-
bratory head.
It is recommended to
introduce the vibrator
of about 10 to 15 cm
in the previous con-
crete layer to obtain a
better bond between
layers
When the bottoms of the frames are inclined
fill first with concrete to achieve a horizontal
surface and start to vibrate in the deepest part
of the structure.
18
2a
Layer
1a
Layer
1st Layer
1st Layer
1st Layer
Because the most powerful vibrations are gen-
erated at the tip of the head and decrease
towards the top, no increase in the vibrating
effect is obtained if the vibrating head of the
concrete is placed in a horizontal position.
90˚
It is recommended,
for more efficiency in
vibration work, not to
tilt the vibrator more
than 45 ° (45 ° maxi-
mum).
It is very important that when pulling the con-
crete vibrator out of the mix, this movement
is as slowly as possible to allow the space oc-
cupied by it to be now occupied by concrete.
2nd Layer
3th Layer
2nd Layer
45˚