How to Move the Press off Top Dead Center

The press slide is normally stopped near Bottom Dead Center (0 ± 60 degrees) when the clutch is disengaged. However, some circumstances (worn brake pads, rotary cam limit failure) can cause the press to stop near Top Dead Center (170 - 190 degrees). When this happens, use the following procedure to move the press back to Bottom Dead Center.

PROCEDURE:
  1. Open the far side access door and check the indicator dial on the drive shaft to see at what angle the press stopped.
  2. If the press stopped past 180 degrees, go to step #5. If the press stopped before 180 degrees, push the F2 key from the Main Menu to bring up the Operation Screen.
  3. Then, push the H key to place the Main Motor in reverse. If the Main Motor was running, it will automatically turn off when the H key is pushed.
  4. Push the MACHINE ON pushbutton located on the Main Control Panel. The green light in the button flashes as the motor ramps up to speed and then turns solid.
  5. Close all doors and push the DOORS LOCK pushbutton.
  6. Turn the Mode Selector Switch to the SET-UP STARTING RPM position.
  7. Push the CLUTCH ON pushbutton to single stroke the press. It may take several attempts before the slide moves.
  8. If press still won't move, push the F2 key on the Operation Screen. This brings up the Pre-Selections Screen.
  9. Push the K key to place the press in "Run Free With Max. Speed" mode. The indicator light turns yellow. This allows the press to run in Single Stroke Mode at the set press speed.

    This should only be done to free a seized slide!
  10. Close all doors and push the DOORS LOCK pushbutton.
  11. Push the MACHINE ON pushbutton located on the Main Control Panel. The green light in the button flashes as the motor ramps up to speed and then turns solid.
  12. Push the CLUTCH ON pushbutton to single stroke the press. Repeat if the slide doesn't move.
  13. If the slide still won't move, increase the air pressure (maximum 10 bar) to the Clutch / Brake unit and repeat step #12.

    Once the slide is free, return the air pressure to 5.5 bar. Running the press continuously above 6.0 bar can damage the Clutch/Brake Unit.

    NEVER attempt to cut or grind the die away to free the press. When stuck on Top Dead Center the dies are under extreme pressure. Cutting or hitting the dies could cause pieces of the die to fly off at a high rate of speed and cause serious personal injury.
  14. Return the press to normal operating mode.