Operating instructions

About the Forces Transmitted by Milnor

Washer-extractors

PELLERIN MILNOR CORPORATION

rigidity (i.e., a natural or resonant frequency many times greater than the machine speed with a

reasonable factor of safety); otherwise, the mentioned 360º rotating sinusoidal RMS forces can be

multiplied and magnified many times. It is especially important to consider all potential vibration

problems that might occur due to all possible combinations of forcing frequencies (rotating

speeds) of the machine(s) compared to the natural frequencies of the floor and/or any other

supporting structure(s). A qualified soil and/or structural engineer must be engaged for this

purpose.

Figure 1: How Rotating Forces Act on the Foundation

Typical Machine

Legend

A. Direction of force

B. Load

C. Rotation (Frequency = RPM / 60)

Figure 1 above is intended to depict both on-grade and above-grade installations and is equally

applicable to flexibly-mounted washer-extractors, as well as to rigid models installed either

directly on a floor slab or on a foundation poured integrally with the slab. Current machine data is

available from Milnor

upon request. All data is subject to change without notice and may have

changed since last printed. It is the sole responsibility of every potential owner to obtain written

confirmation that any data furnished by Milnor

applies for the model(s) and serial number(s) of

the specific machines.

— End of BIWUUI02 —