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SECTION 5 SERVlCER'STECH. INFORMATION
I I
i ............ ml ,
5D. ROTARY VALVE SERVICE
BEFORE WORKING ON THE VALVE, TURN OFF
THE WATER SUPPLY AND DISCONNECT FROM
ELECTRICAL POWER TO RELIEVE PRES-
SURE
3 VALVE BYPASS: Close the inlet valve and
open a soft 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 drawi_oward the
backside of the valve to allow pressure water to
bleed out (catch water with a rag).
DISASSEMBLY
To remove a part or group of parts, refer to the valve
drawing A common screwdriver or nut driver,
Phillips screwdriver and pliers are the only tools
needed to completely disassemble.
SERVICING THE VALVE
Inspect alt 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.
ASSEMBLY
Be sure aft 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
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 BE-
FORE TIGHTENING THE SCREWS, INSTALL
THE 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
switch
valve cam
cam gear with Molykote grease, or other high
quality gear lubricant
Be sure to orient switch as shown, with lever
toward the valve cam.
27
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