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BP1620, BP1628 & BP1640 Granulators Page 41 BP1600
Problem Possible Cause Solution
Fan wheel is loose on
shaft.
Tighten set screws as
required.
Transition or cyclonic air
separator tubing is
clogged.
Clean as required.
Granulate builds up in
the transition or tubing
Fan is not evacuating
properly.
Check for loose fan
wheel on shaft, worn fan
wheel, or loose drive
belts.
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.
Feedstock hangs up in
the hopper or cutting
chamber
Overloading of the
machine.
Regulate the infeed of
scrap to uniformly feed
the machine over an
extended time period.
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.
No granulate
Fan tubing is not
connected properly.
Connect as required.
Knife gap is too large.
Adjust knives to proper
gap specifications.
Knives are dull.
Sharpen or replace
knives and reinstall.
Stringy granulate
Overloading of feedstock.
Reduce the amount of
feedstock put into the
machine per unit of time.