Operating instructions

Table Of Contents

has sufficient strength and rigidity, plus a reasonable factor of safety for both, to support the

weight of all the fully loaded machine(s) including the weight of the water and goods, and

including the published 360º rotating sinusoidal RMS forces that are transmitted by the

machine(s). Moreover, the floor, foundation, or other supporting structure must have sufficient

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

Direction of force

Load

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 —