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 and
the water meter and power plugs.
If no water meter wire is visible, then a plug is installed not a water meter.
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 capon the left side of
the control valve. Pliers maybe 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 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, use
your fingers to gently pull forward on the turbine to remove it 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 unacceptable lubricants on the o-ring. A silicon lubricant may be used on the black 0-ring.
Snap the turbine on the shaft and reinsert the water meter into the side slot. Hand tighten the nut. Do
not use a pipe wrench to tighten nut.
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, make sure 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. If necessary a pliers can be used
to unscrew the nut or cap. Do not uses pipe 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 the cap and lift the cap, rotor and handle Out as one unit. Twisting the unit
as you pull it out will help to remove it more easily. There are three 0-rings: one under the rotor cap,
one on the rotor stem and the rotor seal. Replace worn 0-rings. Clean rotor. Reinstall rotor.
When reinstalling the red arrow handles be sure that:
0-rings on both rotors face to the right when being viewed from the front of the control valve when the
handle pointers are lined up with the control valve body arrows; or
2 Arrows point toward each other in the bypass position.
