© 2002 New Aqua LLC dba Aqua Systems • 7785 East US Hwy 36 • Avon, IN 46123
32
Series SC
Installation, Operation,and
Maintenance Manual
Service Guide
reflective coating because 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 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 1/4 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” buttons 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 Cap Assembly, Main Piston and Regenerant Piston
The drive assembly must be removed to access the drive cap assembly. The
drive cap assembly must 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 1/4”
to 1/2” 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. (See Figure 5). 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.
The drive cap assembly contains the drive cap, the main drive gear, drive cap
spline, piston rod and various other parts that should not be dissembled in the
field. The only replaceable part on the drive cap assembly is the o-ring.
Attached to the drive cap assembly is the main piston (down flow or up flow)
and if a regenerant is used, a regenerant piston.
The regenerant piston (the small diameter one behind the main piston) is
removed from the main piston by unsnapping it from its latch. Chemically clean in dilute sodium bisulfite or vinegar or
replace the regenerant piston if needed. To remove the main down flow or up flow piston fully extend the piston rod and
then unsnap the main piston from its latch by pressing on the side with the number. Chemically clean in dilute sodium
bisulfite or vinegar or replace the main piston.
Figure 5
