Troubleshooting procedure for rod changer
The delays required for:
allowing the opening of the upper clamp to allow retightening of the upper coupling before unscrewing a
rod (when removing a rod), or reduced opening of the upper and lower clamps for guiding the rod during screwing in the
coupling held in the centralizer (when adding a rod),
controlling the detection of the carousel rotation disregarding the direction of the movement,
are set by acting on the 2 small potentiometers of the PLC.
Setting 0, adjusts the time for clamp opening in guiding position (setting range O to 200 millisecond).
Setting 1, adjust the delay for the detection of the carousel rotation (setting range O to 100 millisecond).
These settings should be readjusted according to the variation of the oil viscosity which in winter will reduce the
speed of the movements.