The vibrator before starting work should be attached to the base, the operation of an unknown vibrator is not allowed. Fixation is carried out using nuts, tightened using a dynamometric key. The values of the delaying moments are given in the passport of the product. Under the nuts there should be a flat puck and a puck-groover to prevent unscrewing the nuts during the operation of the tool. The plate should be set in level. So that the vibrator shaft during operation is strictly horizontal.