Daily Inspection; Bi-Monthly Service - Precision PMR Rotary Feeder Service Maintenance Manual

Daily Inspection

NOTE: BEFORE ANY INSPECTION OR MAINTENANCE, YOU MUST FOLLOW STANDARD 'LOCK-OUT/TAG-OUT'
PROCEDURES FOR ALL POWER SOURCES AS DEFINED BY OSHA. SEE WARNINGS
1. Visually inspect knives through the access door for any signs of damage to the knives or mis-
adjustment of the knives. See the sections below on Knives, Knife Adjustment, and Knife
Replacement, along with Appendix #4; all of which have information on maintaining
optimal knife performance.
2. Listen carefully to the feeder in operation; if the sound of metal-on-metal scraping or
knocking is heard, discontinue operation, lock-out the drive, and visually inspect all
components for wear or mis-alignment
3. Visually inspect bearings for evidence of adequate grease supply

Bi-Monthly Service

NOTE: BEFORE ANY INSPECTION OR MAINTENANCE, YOU MUST FOLLOW STANDARD 'LOCK-OUT/TAG-OUT'
PROCEDURES FOR ALL POWER SOURCES AS DEFINED BY OSHA. SEE WARNINGS
Adjust the shaft packing seals – All rotary feeders incorporate a shaft seal/packing gland that is
filled with square graphite impregnated mechanical packing, and is located between the
bearing and the back of the end bell. These seals should be checked on a regular basis and if air
or dust is found to be leaking, then the packing gland should be tightened.
Adjust the shaft packing seals by tightening the packing gland screws evenly until resistance is
detected.
At the end of its life, the packing gland will bottom out and the packing material must be
replaced. See instructions in the section Packing Replacement.
Lubricate bearings – Precision recommends the use of a good-quality, all-purpose grease that is
appropriate for the temperature conditions where the feeder is installed. Too much grease will
damage bearing seals, and should be avoided.
Check knife-to-rotor clearance – With a set of feeler gauges, confirm that the knife-to-rotor
clearance is maintained at 0.008" to 0.010". It is important to confirm that the clearance is
consistent along the knife; Precision recommends checking the clearance in 2-3 spots along the
length of the knife. If time is available, it is a good practice to check the clearances on all of the
rotor vanes.
Updated June 2018
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