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Safety messages of the GP20 Shredder Hybrid

Safety Messages of the GP20 Shredder Hybrid The GP20 Shredder Hybrid contains numerous safety switches to ensure safe operation. When a component is misplaced, its corresponding safety interlock switch will fail to detect it, preventing operation. Read here how to correctly reinstall components and clear the safety faults.

The GP20 Shredder Hybrid has safety mechanics in place to prevent damage to the machine, to the operator and to ensure all parts to operate successfully are present. Below you'll find the basics to check before starting to operate the machine and what other secured items could possibly cause the machine to stop working.

Basic checks

Emergency stop pressed

The emergency stop might have been used to halt the operation. The emergency stop locks into place when pressed, preventing further operation.

Solution:

  •  Rotate the emergency stop button clockwise until it "pops up," signaling its release. 
  • Restart the machine via the main menu

Machine link safety cables

 The control boxes are linked via daisy-chained safety cables to the Hopper, Shredder, Granulator, and Container. These cables pass the safe-state signal continuously through the loop. If a cable is loose or a sensor is un-triggered, the safety loop opens


Solution:

 Ensure all machine link cables are fully seated between components (located between Shredder/Hopper and Granulator/Container). Verify that safety handles and switches on all linked items are completely engaged

Secured Items

Hopper Not Detected

The Hopper safety interlock switch does not detect the hopper assembly. The system will not operate if this magnetic/mechanical contact is broken.

  • Solution: Ensure the Hopper is flush, completely mounted, and the safety clips are snapped tight. Restart via the main menu.

Left or Right Shredder Comb Misplaced

Sensors monitor the precise physical seating of the Shredder combs.

  • Solution: Follow the Shredder comb installation procedure to fully reseat the components inside the unit.

Granulator Door Panel Not Secured

The safety switch does not detect the door actuator. An open door exposes the Granulator Rotor and knives.

  • Solution: Close the Granulator door completely so that it activates the internal switch. Secure all safety clips. Restart via the main menu.

Outlet Not Secured (Container)

The sensor does not detect the presence of the collection Container.

  • Solution: Align and push the Container fully into place; verify safety clamps are securely fastened. Restart via the main menu.

Hybrid Interlock is Not Secure

This indicates that the physical connection loop between the stacked units is broken.

  • Solution: Ensure the slider mechanisms (two black knobs at the back) are pushed all the way in and locked. Verify that overall unit stacking alignment is correct.

🛠️ Advanced Troubleshooting: If the components are visibly secure but the safety error persists, the underlying mechanical switch or wiring may be at fault. Please refer to the GP20 Granulator & Shredder Interlock Faults guide below to perform multimeter continuity testing.

Contact support

Are you still experiencing any issues after reviewing the troubleshooting steps above?
Please to contact us, and we will assist you to find a solution!