4.36 DESIGN REQUIREMENTS FOR PARTICLE SIZE REDUCTION
EQUIPMENT
4.36.1 Specific Design Requirements
4.36.1.1 Reducing mechanisms, such as knives, blades, hammers,
etc., shall be accessible or removable for cleaning.
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4.36.1.2 Reducing mechanism hubs and spacing collars shall
have matching diameters and faces to afford a tight fit and
to eliminate the formation of shoulders. Setscrews shall not
be used. Exposed keys, keyways or splines shall not be used
in the product zone.
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4.36.1.3 Shaft seal assemblies and seal rings shall be both
readily accessible and readily retractable, or shall be readily
removable for cleaning.
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4.36.1.4 Bearings in the product zone shall be self-lubricating
and readily removable. All surfaces shall be readily accessible
for cleaning.
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4.36.1.5 Augers or other pre-feed devices shall be accessible
or removable for cleaning.
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