Main Piston and Brine Piston - Reassembly
Reattach the main piston to the drive cap assembly. Reattach the brine piston to the main
piston. Reinsert the drive cap assembly and piston into the seal and spacer stack assembly
insert the four screws and tighten the drive cap assembly. Make certain that the main drive
gear still turns freely. Rotate the main drive gear counter-clockwise until it stops (this action
will ensure that the threaded piston rod will not interfere with the reattachment of the drive
bracket and circuit board assembly.) Reattach the drive back plate by sliding it over the two
tabs and rotating clockwise until the drive back plate “clicks” into place
Reattach the drive bracket and circuit board assembly to the control valve and connect all
plugs. After completing any valve maintenance, press and hold NEXT and REGEN buttons
for 3 seconds. This resets the electronics and establishes the service piston position. The
display should flash all wording, then flash the software version and then reset the valve to
the service position.
Seal and Spacer Stack Assembly - Disassembly and Inspection
To access the spacer stack assembly remove the drive assembly, drive cap assembly and
piston. The spacer stack assembly can then be pulled straight out. Inspect the black O-rings
and inner seals for wear or damage, replace the entire stack if necessary. Do not
disassemble the stack.
The spacer stack assembly may be chemically cleaned (dilute sodium bisulfite or vinegar) or
wiped with a soft cloth.
Seal and Spacer Stack Assembly - Reassembly
The seal and spacer stack assembly can be pushed into the control valve body bore by
hand. The control valve body bore interior can be lubricated with silicone to allow for easy
insertion of the entire stack.
Reattach the drive cap assembly and piston(s) and the drive assembly.
After completing any valve maintenance, press and hold NEXT and REGEN buttons for 3
seconds. This resets the electronics and establishes the service piston position. The display
should flash all wording, then flash the software version and then reset the valve to the
service position.
Injector Cap, Screen, Injector Plug and Injector - Disassembly and Inspection
The injector can be accessed at the back of the valve by removing the threaded injector
cap. Remove the injector by prying it out of the housing. An injector consists of a throat and
nozzle. It can be chemically cleaned with vinegar or dilute sodium bisulfite. The holes can
be blown out by air. Sharp objects, which can score the plastic, should not be used to clean
the injector. Scoring the injector or increasing the diameter of the injector hole could change
the operating parameters of the injector.
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