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 prelubricated. 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.
BYPASS VALVE
The working parts of the bypass valve are the rotor assemblies that are contained under the bypass valve caps.
Before working on the rotors, be sure that there is a closed shut-off valve ahead of the unit and the system is
depressurized. Turn the red arrow shaped handles towards the center of the bypass valve and back to the arrow
direction several times to ensure rotor is turning freely.
The nuts and caps are designed to be unscrewed or tightened by hand or with the Service Wrench, V3193. If
necessary a pliers can be used to unscrew the nut or cap. Do not use a standard wrench to tighten or loosen nuts or
caps. Do not place screwdriver in slots on caps and/or tap with a hammer.
To access the rotor, unscrew cap and lift the cap, rotor and handle out as one assembly. Rotating the assembly as
you pull it out will enable it to be removed more easily. There are three o-rings: one under the rotor cap, one on the
rotor stem and one on the rotor seal. Replace worn o-rings. Clean rotor. Reinstall rotor.
