INDUSTRIAL SHREDDER
Instruction manual for use and maintenance
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6.5
ANOMALOUS SITUATIONS, EMERGENCIES, ALARMS
CAUTION
Should one of the anomalous operating conditions described in the trouble-
shooting table occur, remember that the operator is only allowed to stop the
machine. He must then turn to skilled personnel for the removal of the cause of
such anomalous condition.
6.5.1
Overload reverse
During the work, it may happen that the presence of non-shreddable material can cause overloading
on the blades and therefore the shredder activates the reverse cycle described in Chapter 5 SETTING
AND FIRST STARTING (5.3 ADJUSTMENTS ON BOARD OF THE SHREDDER). Should the reverse cycles be
started too frequently, because the material is too hard or even non-shreddable, the thermal relay will
stop the machine, and at the same time will switch on the red signal yellow JAM THERMAL.
In this case the electrical maintenance operator must intervene and proceed as follows:
•
turn off the shredder and disconnect the main switch;
•
open the switchboard;
•
wait till the relay cools down (approx. 5 min.)
•
reset the relay by pressing the relevant reset button;
•
close the switchboard;
•
push the RESET-button and turn the selector switch F 1-2 onto position 2; make the machine
work in reverse run, to free the blades from the material which has caused the overloading
IMPORTANT NOTICE
If it is necessary to check that there are no foreign bodies inside the machine, the
person in charge of maintenance must be called for intervention.
See also prescriptions on warning paragraph 2.3 INCORRECT AND/OR IMPROPER
If the overloading is caused by a too massive material feeding, it is necessary to
batch it to obtain a more regular operation.
IMPORTANT NOTICE
The reverse run of the machine must not be considered as a regular working
mode: should the shredder jam, it is compulsory to remove the cause of the
overload and check that the working condition of the machine does not exceed
the stated limit of capacity. It is absolutely forbidden to let the shredder work
when the reversals occur frequently, because the blade-holding shaft would be
forced to an anomalous stress and seriously damaged.
