Hellenbrand H-125 Series Owner's Manual page 33

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 in the slot so that it is not
misplaced. Twist to remove the white flow control re-
tainer. 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.
If no water meter 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 cap on the left side of the control valve.
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 be-
tween 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, 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.
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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 bear-
ings are prelubricated. 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 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 as-
semblies that are contained under the bypass valve caps.
Before working on the rotors, make sure the system is de-
pressurized. Turn the red arrow shaped handles towards
the center of the bypass valve and back 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 use a 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 ro-
tor, 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 o-rings: one under
the rotor cap, one on the rotor stem and the rotor seal.
Replace worn o-rings. Clean rotor. Reinstall rotor.
When installing the red arrow handles be sure that:
1. The handle pointers are lined up with the control valve
body arrows, and the rotor seal o-ring and retainer on both
rotors face to the right when being viewed from the front of
the control valve; or
2. Arrows point toward each other in the bypass position.
Since the handles can by pulled off, they could be ac-
cidently reinstalled 180º from their correct orientation. To
install the red arrow handles correctly, keep the handles
pointed in the same direction as the arrows engraved on
the control valve body while tightening the bypass valve
caps.
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 soft-
ware version and reset the valve to the service position.