GBC Shredmaster 5160X, Service Manual, Page: 5 / 24

5
5.O TROUBLESHOOTING
5.1 Mechanical Operation
The shredder uses two rotating
cutting shafts, which are driven by
an electrical motor to shred paper.
Both the upper and lower cutters are
precisely milled with a helix. The
cutter blades are progressively
staggered and give the cutters a
spiraling effect. The upper and
lower cutter blades are meshed with
each other and the cutting teeth are
timed to engage each other at
precisely the right point. Cutter
timing is explained in
Section 6.8 .
5.2 Electrical Operation
When the rocker standby/off
/reverse switch (S1) is depressed in
the “I” position, the green control
light will illuminate to indicate the
shredder is in the standby mode.
Power is supplied from the hot side
of the circuit to the following
components; the circuit breaker,
contactor, motor and the control
board. The neutral line is fed
through the contactor and to the
control board.
When the photocells sense paper in
the throat area, the circuit is
completed through the control board
allowing the contactor to
supply power to the motor.
When the shredder is in the stand-
by mode and the door of the
shredder is opened, the door ajar
icon illuminates. The control board
disables the circuit that provides
power to the motor until the door is
closed.
When the bag full flap switch is
opened, the bag full icon will
illuminate. The control board then
disables the circuit to the motor until
the shredder is cleared or emptied.
When the shredder is severely
loaded down, the control board turns
on the reverse symbol icon and
disables the circuit to the motor.
5.3 Electrical Components
Motor - The motor is a single phase
3/5 HP, thermally protected
gearmotor, which is designed for
continuous operation.
Capacitors - (30uF & 40uF) These
capacitors assist the motor in
starting and running.