Sterlco BP 1000 Series Beside the Press Granulators - Manual (Page 24)

1000 Series Granulators Chapter 5: Maintenance 24 of 45
Chapter 5: Maintenance
5-1 Preventative Maintenance Schedule
Check Frequency
Knife clearance Weekly
Knife retaining screws for tightness Weekly
Shield retaining screws for tightness Weekly
Screen cradle screws for tightness Weekly
Lubrication of drive motor bearings Monthly
Screen Wear Monthly
Belt tension Monthly
Hopper and cutting chamber screws are tight Monthly
5-2 Testing the Interlock Switch
The cutting chamber interlock switch ensures that the granulator cannot be running when the
cutting chamber or screen cradle are open. When disengaged, the interlocks open the
electrical control circuit to the motor and prevent the machine from running.
To test the interlock switch, retract the interlock actuator screw by turning it
counterclockwise. Make sure that the end of the actuator screw is visible and clear of any
contact. The granulator should stop. If the granulator does not stop, the interlock is not
working. If the interlock does not work, the complete mechanism, including the switch, must
be removed and disassembled to determine the cause of the malfunction.