Cumberland 4050 - Granulate Flow and Feedstock Issues

Page 44 40 Series Granulators
Problem
Possible Cause
Solution
Granulate builds up in
the transition or tubing
Fan wheel is loose on
shaft.
Tighten set screws as
required.
Transition or cyclonic air
separator tubing is
clogged.
Clean as required.
Fan is not evacuating
properly.
Check for loose fan
wheel on shaft, worn fan
wheel, or loose drive
belts.
Feedstock hangs up in
the hopper or cutting
chamber
Material being placed
into the machine for
processing is too large
for the hopper, cutting
chamber, or rotor
diameter.
Reduce the initial size of
the feedstock.
Knives are dull.
Sharpen or replace
knives and re-install.
Overloading of the
machine.
Regulate the infeed of
scrap to uniformly feed
the machine over an
extended time period.
No granulate
Feedstock may be hung
up inside hopper.
Shut the machine down
and check.
Screens are plugged.
Clean the screens.
Fan is too small.
Replace with larger unit
or fan wheel.
Fan line may be clogged.
Clean as required.
Fan wheel is damaged or
worn.
Replace or repair as
required.
Fan tubing is not
connected properly.
Connect as required.
Stringy granulate
Knife gap is too large.
Adjust knives to proper
gap specifications.
Knives are dull.
Sharpen or replace
knives and reinstall.