Replace broken or damaged drive gears. Do not lubricate any of the gears. Avoid getting any foreign
matter on the reflective coating became dirt or oils may interfere with pulse counting.
The drive gear cover only fits on one way, with the large clip orientated towards the bottom. If all three
clips are outside of the gear shroud on the drive bracket the drive gear cover slips easily into place.
The drive bracket does not need to be removed from the drive plate if the motor needs to be removed.
To remove the motor, disconnect the power and motor plugs from the jacks on the PC board. Move the
spring clip loop to the right and hold. Rotate the motor at least a% turn in either direction before gently
pulling on the wire connectors to remove the motor. Pulling directly on the wires without rotating the
motor may break the wires off the motor.
Replace the motor if necessary. Do not lubricate the motor or the gears. When reinstalling the motor
gently turn the motor while inserting so that the gear on the motor meshes with the gears under the
drive gear cover and the small plastic bulge engages one of the slots on the motor housing. Reconnect
the motor plug to the two pronged jack on the lower left hand side of the PC board. If motor will not
easily engage with drive gear when reinstalling, lift and slightly rotate motor before reinserting.
Replace the valve cover. After completing any valve maintenance, press and hold NEXT and REGEN
bottom for 3 seconds or unplug power source jack (black wire) and plug back in. This resets the
electronics and establishes the service piston position. The display should flash all wording, then flash
the soft ware version (e.g. 154) and then reset the valve to the service position.
Drive Can Assembly Main Piston and Regenerant Piston
The drive assembly must be removed to access the drive cap assembly. The drive cap assembly most be
removed to access the piston(s). The drive cap assembly is threaded into the control valve body and
seals with an o-ring. To remove the drive cap assembly use the special plastic wrench or insert a ¼’ to /i
flat bladed screwdriver into one of the slots around the top 2″ of the drive cap assembly so it engages
the notches molded into the drive back plate around the top 2′ of the piston cavity. The notches are
visible through the holes. Lever the screwdriver so the drive cap assembly turns counter clockwise. Once
loosened unscrew the drive cap assembly by hand and pull straight out.
