Upon delivery, the centrifugal weights are factory-adjusted to the maximum centrifugal force specified on the type plate. lf it is necessary to change this presetting centrifugal force generated by the vibration motor can be adjusted. In order to do so, the protective covers of the drive have to be removed on both sides.
For A4x -series the adjustment of centrifugal force is done by skewing both of the in board (next to the end shields) centrifugal weights. To do so, the fixing screws of these centrifugal weights have to be unfastened. lt must be observed that the centrifugal weights at both sides of the motor have to be skewed counter wise to the same value. Actual value is to be read on scale (see figure 8 A4x Adjustment of centrifugal force).
After adjustment the fixing screws of the centrifugal weights have to be fastened again, and the protective covers have to be attached. Before attaching the protective covers, the intactness of the sealing rings has to be ensured. Damaged seals have to be replaced. The tightening torques of the screw connections of centrifugal weights and convers have to be observed.
The vibration motor centrifugal force generated by the vibration motor can be adjusted by changing the position of the centrifugal weights on the rotor shaft in discreet steps. This is possible by assembling individual centrifugal weights turned by 180°. It must be observed that the centrifugal weights at both sides of the motor have to be assembled in the same number and arrangement. In order to do so, the clamping screws of the centrifugal weights on the rotor shaft have to be loosened.
Per centrifugal weight to be turned at each side, the maximum centrifugal force will be reduced by the values listed below, in dependence on the rotational speed.
The centrifugal force can be reduced in discrete steps by turning individual centrifugal weights (same number and arrangement at both sides).