
6
Pellerin Milnor Corporation
natural resonant frequency many times greater than any possible rotation speed of the ma-
chine or combination of rotation speeds of all machines.
–
Each time goods fall in the rotating cylinder of a washer, washer-extractor, centrifugal ex-
tractor, or dryer, this can impart a force to the supporting structures.
–
The intermittent start and stop actions of large components inside the machine, particu-
larly in a tilting washer-extractor, press-extractor, or centrifugal extractor, can impart in-
termittent forces to the supporting structures.
•
The possibility of adverse consequences is significantly greater for upper floor installations
than for installations at grade. Always consult a structural engineer for such an installation.
•
The possibility of adverse consequences is significantly greater for installations at grade if
subsidence causes a void between the foundation and the soil or if the soil itself does not pro-
vide adequate strength and rigidity. Some possible remedies are the addition of pilings or a
deeper foundation, installed as to be monolithic with the existing foundation.
•
Machine forces can cause damage to the machine or the floor without the correct anchorage.
•
Applicable building codes, even when met, do not guarantee sufficient structural support and
isolation of machine forces to the laundry room.
Figure 1.
How Rotating Forces Act On the Foundation
Typical Washer-extractor (see note below)
Legend
A...
Direction of force
B...
Load
C...
Rotation (frequency = RPM / 60)
NOTE:
This figure applies to both rigid and suspended washer-extractors and to both
at-grade and upper floor installations.
1.3.3
Primary Information Sources
BNUUUI01.C04 0000189357 C.2 C.3 A.5 1/2/20 2:14 PM Released
Milnor
®
provides, or can provide the following information of use to engineers and architects, for
the given machine model:
•
The machine dimensional drawing, found in the installation manual, specifies the machine’s
required anchorage.
•
The Milnor
®
Service Department can provide static and dynamic load values and frequency
(extract speed) values on request.
Summary of Contents for E-P Plus
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