MAGUIRE PRS-20, Installation Operation & Maintenance

Page: 24 / 47

Maguire Products, Inc.
Edition: June 20, 2012 – PRS-20
24
Maguire Purging Recovery System
4.4 – Adjustment of Lower Granulator Knife Gaps
We recommend that knife gapping be checked at least once per week. This period of
time may vary depending upon the type of material you are granulating and the
frequency of use. Any increase in dusting or fines that is experienced on or within the
granulator is a sign that your knives are dull or their gap is excessive. However, some
materials are inherent to dusting. We do not recommend setting the gap between your
rotor knives and bed knives at less than .004 inch.
Knives Are Extremely Sharp!! Use extreme caution
when placing your fingers or hands near the rotor
knives.
THE FOLLOWING TOOLS WILL BE NEEDED
•
.004 FEELER GAUGE
•
TORQUE WRENCH (54 FT. LBS.)
•
5116 ALLEN WRENCH
•
9116 OPEN END WRENCH
•
RUBBER MALLET
1. Follow proper shutdown procedure as described in Starting / Stopping the PRS-
20 on page 19.
2. Unplug the Granulator.
3. Lockout / Tagout the power source.
4. Open the Front Access Door.
Rotate fastener ½ turn counterclockwise to open door.
5. Remove the Transition Discharge.
Lift latch on right side of guides and swing ¼ " thick stop 90 degrees outward so
discharge can be removed While supporting the transition discharge, gently slide the
chute outward until it is removed from the machine.
6. Carefully Examine the Cutting Chamber and Rotor for excess wear/damage.
7. Remove the partially ground product. Be careful not to drop non-size reduced
particles into the discharge chute.
8. Remove the Screen Ring.
"Using a reverse grip", place both hands inside of the screen ring and grasp the material
deflector wings. Pull "evenly with each hand" in an upward motion. (Inspect ring to
insure all evacuation holes are clear).
9. Carefully Grasp The Rotor In The Center And Slowly Rotate.
This is to assure that there are not any pieces of material preventing smooth operation