Pellerin Milnor Corporation 15
NOTICE: The specified wire size may appear too small for the fuse or circuit breaker
shown. However, it is consistent with both the load imposed and with the USA National
Electric Code.
Ground
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The ground wire and connections must ensure a reliable earth ground (zero potential). Use wiring
of at least as large a gauge as that required for incoming power. Do not rely on conduit, machine
anchorage, etc. Use the ground lug provided in the incoming power junction box on the machine.
Disconnect Switch for Lockout/Tagout
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The disconnect switch must permit personnel to disconnect and lockout/tagout electric power
from the machine. In the USA, refer to OSHA standard 1910.147 “The control of hazardous en-
ergy (lockout/tagout)”. Refer to the USA National Electric Code for requirements on locating the
switch. In other locales, abide by these standards if no other local codes apply.
Using GFCI (Ground Fault Circuit Interrupter) Device
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The AC Drive will most likely cause the GFCI protection device to trip. The reason the AC Drive
will cause this tripping of the GFCI is the Common Mode Current or Common Mode Noise (CM
Noise) that the VFD is producing.
Use a GFCI with a higher trip level.
NOTE: Choose a GFCI designed specifically for an AC drive. The operation time
should be at least 0.1 s with sensitivity amperage of at least 200 mA per drive. The output
waveform of the drive may cause an increase in leakage current. This may in turn cause
the leakage breaker to malfunction. Increase the sensitivity amperage or lower the carrier
frequency to correct the problem.
Use a type B GFCI according to IEC/EN 60755.
BNUUUI01 / 2019392
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Vital Information About the Forces Imparted to Sup-
porting Structures by Laundering Machines
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This document replaces Milnor
®
document BIWUUI02.
All laundering machines impart static and dynamic forces to the supporting structures (foundation
and soil, floor, and building). Static forces include the machine weight plus the weight of the
goods and water. Dynamic forces are those imparted by various machine movements as explained
in Section : Major Design Considerations, page 16. The dynamic forces imparted to supporting
structures can cause vibration and noise outside of the laundry room if supporting structures are
inadequate.
Important Installation Precautions
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