FREE FREIGHT IN THE CONTINENTAL USA

Follow the guidelines below when using your Viber® Internal Concrete Vibrator for consolidating concrete:

1. Do not leave the vibrator running in air. Totally submerse the vibrator head in the concrete. This cools the bearings. Running the vibrator in air without regularly submersing it in the concrete will overheat the bearings.
2. Avoid making sharp bends in the flexible shaft.
3. Make sure you can see the concrete surface. Use lighting if necessary.
4. Place the concrete in layers no deeper than the length of the vibrator head plus 4-6”. Layers should not exceed 18-20”, otherwise the weight of the concrete will prevent the entrapped air from escaping.
5. Keep the vibrator head at least 3-4” from the forms. It can damage them causing surface defects in the concrete.
6. Do not allow the vibrator head to touch reinforcements, such as rebar. Vibration can break the bond between the reinforcement and preceding layers of stiffened concrete.
7. Let the vibrator head penetrate to the bottom of the layer as quickly as possible under its own weight.
8. Keep the vibrator head vertical to minimize voids and enhance the release of entrapped air.
9. Withdraw the vibrator head slowly. Be sure concrete fills in behind leaving no hole. Do not attempt to “stir” the concrete.
10. Use repeated placements of the vibrator in a systematic pattern to be sure the entire surface has been vibrated. The area of action can be observed by noting how far from the vibrator head bubbles appear on the surface. Placements of the head should insure overlapping of the areas of action.
11. When compacting concrete placed on a previously compacted layer, push the vibrator 4-6” into the lower layer. Move the vibrator up & down for 5-15 seconds to “knit” the two layers together.
12. Avoid placing the concrete in “heaps”. If it is necessary to flatten a heap, insert the vibrator head around the perimeter of the heap using as many placements as necessary.
13. Consolidation is complete when no new bubbles come to the top, a glistening layer of mortar covers the concrete surface, and the “whine” of the motor indicates that the vibrator speed has leveled off.
14. Clean all vibrator parts immediately following each use.

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