Cumberland 4050 - Troubleshooting; Motor;Fan Start and Stalling Issues

Page 42 40 Series Granulators
10 Troubleshooting
Problem
Possible Cause
Solution
Motor/(optional) fan
motor will not start.
No power.
Verify that the correct
pushbuttons are being
depressed and that the
main disconnect switch is
in the ON position.
Fuses are blown.
Try to locate grounds, a
locked rotor or other
reasons.
Replace fuses with the
size and type shown on
the wiring diagram
(located in the control
enclosure).
Check for motor and fan
overloads.
Check amperage at
electric motors.
If a safety switch is open.
Check the safety
switches at the front
doors. Ensure proper
actuation and replace if
required.
If fan is hinged type
design (optional)
Check safety limit switch
to be sure it is making
contact.
After completing above
inspection, machine will
still not start.
Call Service Department.
Machine stalls/(optional)
fan stalls
Machine is overloaded
with feedstock.
Reduce amount of
feedstock put into
machine per unit of time.
Pieces of feedstock
jammed in the rotor.
Clear the jammed
material then visually
inspect the rotor to
ensure it is not damaged
and that the knife gaps
are correct.