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5
Maintenance
Maintenance l 5-3
Cleaning the Hopper
CAUTION: Hot surfaces. Always protect yourself from hot surfaces inside and out-
side the dryer and drying hopper.
The hopper, spreader cone, and discharge assembly should be cleaned thoroughly
between material changes to prevent resin contamination.
Place a container beneath the hopper’s
drain port to catch the material.
1 Close the hopper slide gate.
2 Remove the drain-port plug. Pull
the pin and allow the plug to drop.
3 Remove the spreader cone. Open the hopper door. Reach into the hopper.
Grasp the spreader cone tube, lift up slightly, twist and then push down to
release it. Tilt the cone assembly and pull it out through the hopper door.
4 Clean the spreader cone and the inside of the hopper.
Make sure you also clean the return air screen at the return air
outlet of the hopper.
5 Repeat the steps in reverse order to reassemble the hopper
before adding material.