Metalfab Hindon-Invicta L Series - Manual (Page 4)

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3.0 INSTALLATION
3.1 Mechanical
Ensure shaft rotates freely by hand prior to mounting. This will require removing one end
cover to access the out-of-balance (O.B.) weights. Unless otherwise requested, vibrators are supplied
with the O.B. weights set to give a maximum centrifugal force output. To adjust O.B. weights to
the required force output, follow these steps and refer to Figure 1.
1) Remove end covers.
2) Adjust inner weights on each side of shaft extension to reduce centrifugal force output while
outer weights remain fixed on the shaft. Please note: For models BL 03-20 out-of-balance
weights can be adjusted by inner or outer weight, provided both ends are adjusted the same.
3) Weights must be adjusted equally on each side of the vibrator. The scale on the inner O.B.
weights is stated as a percentage of the maximum rated centrifugal force (CF) output.
Example: BL 30-25/4 is factory set at a maximum 5500 lbs. CF (i.e., 100 percent O.B.
weight scale). Assume you need to achieve a 3575 lbs. CF output. Adjust the O.B. weights
on each side to 65 percent (0.65 * 5500 = 3575). The percentage scale attached to the inner
O.B. weights allows for an infinite adjustment between the range indicated. Care should be
taken to properly re-torque O.B. weight clamp screws (in accordance with internal fastener
torque values in Table 1).
4) Ensure end cover O-rings are properly positioned on bearing housing flange prior to refit of
end covers. (If O-rings are dry, an application of petroleum jelly or silicone spray will ease
refit of the end covers and reduce the potential of O- ring "pinching").
Figure 1: Illustration of Vibrator Out-of-Balance Weight
Table 1: Vibrator Fastener Torque Values