Hellenbrand ProMate Series Owner's Manual page 34

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 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 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, 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
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.
Reinsert the water meter into the side slot. Hand tighten the nut.
Do not use a pipe wrench to tighten nut.
SERVICING TRANSFER CAP ASSEMBLIES
Release locking tabs
from each side to
remove back plate.
The control valves backplate must be removed first to allow
access to removing the transfer cap assembly. NOTE: Hold
slight downward pressure on the top left corner of the backplate
while using a thin flat screwdriver or knife blade to push in on
the locking tabs, this will release the backplate and it will twist to
the left off of the valve body. For removal of the drive motor side
you will need to remove the drive cover assembly to access the
motorized drive. The drive motor can be removed by pressing
the spring clip loop to the right then rotate the motor a ¼ turn
and pull outward to remove the motor from the reducing gear
cover assembly. Remove the three Phillips head stainless steel
screws that retain the reducing gear cover to the drive cap. Once
the cover is removed you have access to the reducing drive
gears simply slide them off of the gear axles with your fingers
to inspect / check them there are 3 small black gears with foil
decals and 1 larger black reducing gear. Remove the large white
drive gear from the stainless steel drive shaft. To remove the
large white transfer drive gear firmly grab the outside edge of the
gear with your fingers and pull it outward away from the control
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valve assembly. Now you can use a 5/32" or 4mm allen wrench
to remove the ¼-20 screws that retain the transfer drive cap
assemblies on both sides of the valve.
NOTE: Once the screws are removed from retaining the inlet
side transfer valve cap and the outlet drive motor transfer cap
from the control valve the cap will spring out away from the
valve body. At this point the transfer discs may be removed by
pulling the discs outward off of the shaft away from the valve
body with your hand. With the disc out you can inspect the flat
surface area to be sure it's clean and smooth free of any debris
or scratches. Note that the disc is keyed to the drive shaft so that
it will only assemble in one orientation. The transfer discs may
be chemically cleaned with a dilute sodium bisulfate solution,
vinegar or just wiped with a soft clean cloth.
To remove seals gently pull out on the outer lip of the seal to lift
the seal out from its cavity being careful not to damage the face
surface of the seal. To reassemble re-seat seals into the seal
cavity of the control valve body being sure that the lip of the seal
is facing outward. With seals in place put a thin film of Dow #7
on the tops of the seals and the flat surface of the discs. Prior
to reinstalling the discs the drive shaft should be removed and
the O-rings cleaned, inspected and lubricated with Dow #7. The
shaft can then be installed into the disc prior to installation. With
the outlet disc assembled to the shaft the orientation of the shaft
to inlet disc can be assured by installing the set with the through
hole on the outlet disc at the 6 o'clock position.
The easiest thing would be to remove both disc drives and
assemble the outlet side first. Then each disc could be fitted
on the shaft individually. At this point the transfer valve cap
assemblies can be reinstalled.
Note: That both transfer caps only mount in one orientation. Prior
to installation of cap assembly be sure to check that the stainless
steel spring and the plastic spring support is in place attached to
the inside of the c assembly. Next you can wipe the outside edge
of the O-ring on the cap and the inside mating area of the valve
with a clean cloth & re-apply a thin layer of silicone lubricant like
Dow #7.
BE SURE NOT TO USE ANYTHING HYDROCARBON BASED
SUCH AS VASELINE OR PETROLEUM JELLY TO LUBRICATE
PLASTIC COMPONENTS OR O-RINGS AS THEY WILL BE
DAMAGED BY THE HYDROCARBONS AND POTENTIALLY
CAUSE FAILURES THAT CAN RESULT WITH LEAKS.
Seal "Lip"
feature