35
Reattach the main piston to the drive cap assembly. Reattach the
regenerant piston (if needed) to the main piston. Do not lubricate the
piston rod, main piston or regenerant piston. Lubricant will adversely
affect the clear lip seals. Reinsert the drive cap assembly and piston
into the spacer stack assembly and hand tighten the drive cap assem-
bly. Continue to tighten the drive cap assembly using a screwdriver
as a ratchet until the black o-ring on the spacer stack assembly is
no longer visible through the drain port. Excessive force can break
the notches molded into the drive back plate. Make certain that the
main drive gear still turns freely. The exact position of the piston is
not important as long as the main drive gear turns freely.
Reattach the drive assembly to the control valve and connect all
plugs. 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. This display should flash all
wording, then flash the software version and then reset the valve to
the service position.
Spacer Stack Assembly
To access the spacer stack assembly remove the drive assembly,
drive cap assembly and piston. The spacer stack assembly can be
removed easily without tools by using thumb and forefinger. Inspect
the black o-rings and clear lip 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.
The spacer stack assembly can be pushed in to the control valve
body bore by hand. Since the spacer stack assembly can be com-
pressed it is easier to use a blunt object (5/8" to 1-1/8" in diameter)
to push the center of the assembly into the control valve body. The
assembly is properly seated when at least four threads are exposed
(approximately 5/8"). Do not force the spacer stack assembly in.
The control valve body bore interior can be lubricated with silicone
to allow for easy insertion of the entire stack. Do not use silicone or
any other type of lubricant on the clear lip seals or the piston.
Reattach the drive cap assembly and the piston(s) and the drive
assembly.
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 software version and then reset the valve to the service position.
Injector Cap, Screen, Injector Plug and Injector Replacement
Unbolt the injector cap and lift off. Remove the screen and clean
if fouled.
The injector can be pried out with a small screwdriver. The injector
consists of a throat and a nozzle. Chemically clean the injector with
vinegar or sodium bisulfite. The holes can be blown out with air. Both
pieces have smaller diameter holes that control the flow rates of water
to insure that the proper concentration of regenerant is used. Sharp
objects, which can score the plastic, should not be used to clean the
injector. Scoring the injector or increasing the diameter of the hole
could change the operating parameters of the injector.
Refill Flow Control Assembly or Refill Port Plug
To clean or replace the refill flow control, pull out the elbow-locking clip
and then pull straight up on the elbow. Replace the elbow locking clip
Figure 29
in the slot so that it is not misplaced. Twist to remove the white flow
control retainer. The flow control can be removed by prying upward
through the side slots of the retainer with a small flat blade screwdriver.
Chemically clean the flow control or the white flow control retainer
using dilute sodium bisulfite or vinegar. Do not use a wire brush. If
necessary, replace the flow control, o-ring on the flow control retainer,
or the o-ring on the elbow.
Reseat the flow control so the rounded end is visible in the flow control.
Reseat the white flow control retainer by pushing the retainer into
the elbow until the o-ring seats. Remove locking clip, push down on
elbow to reseat and insert locking clip.
Do not use Vaseline, oils, or other unacceptable lubricants on o-rings.
A silicone lubricant may be used on the o-ring on the elbow or the
white retainer.
Water Meter or Meter Plug
The water meter assembly is connected to the PC board by a wire. If
the entire water meter assembly is to be replaced, remove the control
valve cover and disconnect the power source and water meter plugs
from the PC board. Unlatch the drive assembly and lean it in forward.
Unthread the water meter wire from the side of the drive assembly
and through the drive back plate. To reinstall, rethread the water
meter through the drive back plate and side of the drive assembly.
Reattach the drive assembly and the water meter and power plugs.
The water meter wire does not need to be removed from the PC board
if the water meter is only being inspected and cleaned. To remove
the water meter assembly, unscrew the meter cap. Pliers may be
used to unscrew the nut if necessary.
With the nut removed, a slot at the top of the water meter is visible.
Twist a flat blade screwdriver in the slot between the valve body and
the meter. When the meter is part way out it is easy to remove the
water meter from the housing. Once the water meter is removed from
the body, gently pull forward on the turbine to remove it from the shaft.
Do not use a wire brush to clean the turbine. Wipe with a clean cloth
or chemically clean in dilute sodium bisulfite or vinegar. The turbine
can be immersed in the chemical. Do not immerse electronics. If
the turbine is scored or damaged or the bearings on the turbine are
worn, replace the turbine.
Do not lubricate the turbine shaft. The turbine shaft bearings are pre-
lubricated. Do not use Vaseline, oils, or other unacceptable lubricants
on the o-ring. A silicone lubricant may be used on the black o-ring.
Snap the turbine on the shaft and reinsert the water meter into the
slot. Hand tighten the nut. Do not use a pipe wrench to tighten nut
