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5. Remove the motor/gearbox assembly from the filter without moving the Indexing
Valve shaft. Loosen the screw on the top of the opto disc and rotate the disc slightly
and then tighten screw.
6. Connect power to circuit board, refer to Section 1.8, and initiate a backwash.
7. Repeat procedure 4 until the shaft and holes line up.
8. Now fit the controls back onto the filter and restore power and put filter back on-line.