Before reinstalling the red arrow handles be sure that o-rings on both rotors face to the right when being viewed from
the front when the handle pointers are pointing in the same direction as the control valve body arrows. Keep the
handles pointed this way while tightening the valve caps.
Caution: Since the handles can be pulled off, they could be accidentally reinstalled 180 degrees from their correct
orientation.
After completing any valve maintenance, press and hold NEXT and REGEN buttons for 3 seconds or momentarily
unplug power source jack (black wire). This resets the electronics and establishes the service piston position. The
display should flash text, the software version (e.g. 164), and the cycle number before resetting the valve to the
service position.
