20
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 or
momentarily unplug power source jack (black wire). This resets the electronics and establishes the service
piston position. The display should flash text, software version (e.g.164), and cycle number before resetting
the valve to the service position.
INJECTOR CAP, SCREEN, INJECTOR PLUG AND INJECTOR
Unscrew the injector cap and lift off. Loosen cap with Service Wrench, V3193, or pliers if necessary.
Attached to the injector cap is a screen. Remove the screen and clean if fouled.
The plug and/or injector can be pried out with a small screwdriver. The plug can be wiped clean. If the plug
leaks, replace the entire plug. The injector consists of a throat and a nozzle. Replace o-rings. Chemically
clean the injector with vinegar or sodium bisulfite. The holes can be blown out with air. Both pieces have
small 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.
Two holes are labeled DN and UP. Check for compliance with one of the following:
a. for down flow systems, the appropriate size injector is located in the “DN” hole, a plug is in the “UP”
hole and that the piston is a combination of the main piston and the regenerant piston;
b. for backwash only systems, a plug is in the “DN” hole and in the “UP” hole, and that only the main
piston exists (the regenerant piston must be removed) and a plug is in the refill flow control position.
Push the plug(s) and/or injectors firmly in place, replace the screen and hand tighten the injector cap.
REFILL FLOW CONTROL ASSEMBLY OR REFILL PORT PLUG
To clean or replace the refill flow control, pull out the locking clip and then pull straight up on the elbow.
Replace the elbow locking clip 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
blade flat 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, flow control retainer o-ring, or the elbow o-ring.
Reseat the flow control so the rounded end with lettering is visible in the flow control retainer. Reseat the
white flow control retainer by inserting the retainer into the elbow until the o-ring seats. Remove locking clip,
insert elbow into valve body to reseat, and insert locking clip.
Do not use Vaseline or other petroleum based oils on o-rings. A silicone lubricant may be used on the elbow
o-ring or the white retainer.
WATER METER OR METER PLUG
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 on the left side of the
control valve. Pliers may be used to unscrew the nut if necessary.
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 remove the power source and water meter plugs from the
PC board. Unlatch the drive assembly and lean it 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 wire through the drive
back plate and the side of the drive assembly. Reattach the drive assembly, water meter, and power plugs.
If there is no water meter wire visible, then a plug should be found in the meter location.
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 control 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 control valve body, check that the turbine
spins freely. If it does not, use two fingers behind the blades to gently pull the turbine from the shaft.
Do not use a wire brush to clean. 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 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 side slot. Hand tighten the nut. Do not use
a wrench.
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