Adjusting Eccentric Weights For 20-105 Frame - Martin M3910 Operator's Manual

Adjusting
eccentric weights
for 20–105 frame
Martin Engineering M3910-04/19
Do not operate vibrator with weight covers removed. Dust
accumulating around vibrator shaft could cause unit to fail.
6. Replace weight covers.
Adjust both sets of eccentric weights to same setting
(mirror images) or force output will be uneven.
7. Repeat steps 1 through 6 for second set of weights. Set both sets of
weights the same so they are mirror images.

All Martin Electric Vibrators 20–105 frame have one set of
eccentric weights on each end of shaft.
The percentage increments on the weight or on the weight
adjustment disks are percentages of the total force pounds
listed on the nameplate. For example, if the nameplate shows
8340 lb, setting the weights to 50% would produce 4170
pounds of force.
For the most efficient operation, vibrator eccentric weights
should be adjusted to the lowest force setting required to move
the material. This will increase vibrator life and reduce energy
costs.
Before adjusting eccentric weights, turn off and lockout /
tagout / blockout / testout energy source to vibrator.
The fixed weight is keyed to the shaft. The adjustable weight
rotates around the shaft.
1. Turn off and lockout / tagout / blockout / testout energy source to vibrator
according to ANSI standards (see "References").
2. Remove weight cover.
3. Loosen socket head cap screw (A, Figure 10) so adjustable weight (B)
will rotate around shaft (C).
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CAUTION
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CAUTION
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NOTE
IMPORTANT
WARNING
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NOTE
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Martin Electric Vibrators