Why Did the Chart Stop Turning?
Causes and Troubleshooting:
The chart may be hung up or restricted, possibly caused by a rip on the outer edge of the chart. The chart may also be caught between the arm and pen arm platform. that the gears are not binding or slipping by manually advancing the chart one full rotation with the chart rotation button.
Unit may also be locked up. This can be confirmed by pressing any of the buttons on the keypad. If the unit is locked up, there will be no response to button presses.
The recorder may appear to be working, but the readings won’t change and the chart will not rotate. To correct this, remove the battery and AC power (if applicable) for a minute and then re-power.