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SECTION
5
!
5E.
SERVICER'S
TECH. INFORMATION
I
ROTARY
VALVE
SERVICE
BEFORE
WORKING
ON THE VALVE, TURN OFF
THE WATER SUPPLY AND DISCONNECT
FROM
ELECTRICAL
POWER. TO RELIEVE PRESSURE...
... 3 VALVE BYPASS: Close the inlet valve and open
a filtered water faucet.
Then close the outlet valve
and open the bypass valve.
•..
SEARS
SPECIAL
BYPASS:
Slide the bypass
valve stem to bypass
position.
Loosen
the 3 hex
head screws (see(_)in
drawing)
toward the backside
of the valve to allow
pressure
water to bleed out
(catch water with a rag).
and gear
[_
•_
retainer
washer
DISASSEMBLY
To remove a part or group of parts, refer to the valve
drawing• A common screwdriver or nut driver, Phil-
lips screwdriver and pliers are the only tools needed
to completely disassemble•
SERVICING
THE VALVE
inspect all o-rings, seals and gaskets for wear or
defects.
Inspect the bottom surface of the rotor and disc for
scratches,
chips or wear.
NOTE:
If replacement is needed,
be sure to use the current
replacement
part.
8
\
flow plug (backwash
and fast rinse flow
rate control)
disc
seal
ASSEMBLY
Be sure all parts are in place
and in the proper
position. Lubricate ALL o-rings, and seals with FDA
approved silicone grease•
To install the rotor seal,
first place the seal into the valve groove, rounded
side down (see cross-section).
Apply a light coating
of silicone grease to the seal's crossing ribs. Then,
carefully
center the wear strip on the seal, and push
it downward onto the seal.
ver_tud seal
Install the nozzle and venturi seal and drain seal•
Assemble
2 o-rings
and the wave washer
onto the
rotor and disc• Then center the rotor and disc, in the
valve body, on the rotor seal.
Lower the cover onto the valve body and rotor shaft.
Then install the cover holding
screws•
BEFORE
TIGHTENINGTHE
SCREWS,
INSTALLTHE
VALVE
CAM
AND
GEAR,
THEN
TURN
THE
ROTOR
(CLOCKWISE
ONLY)
TO
SERVICE
POSITION•
Tighten the screws using a criss-cross pattern.
If a
torque
wrench
is available,
torque to 30-40 inch
pounds.
Lubricate the gear on the motor, and the valve cam
gear with Molykote grease, or other high quality gear
lubricant.
Be sure to orient switch as shown, with lever toward
the valve cam.
23
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