Kenmore 300 Series - Manual (Page 38)

38
Service Tech Information
ROTARY VALVE SERVICE
IMPORTANT: 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
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 three hex head screws
toward the back side 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 com-
pletely disassemble.
SERVICING THE VALVE
Inspect all o-rings, seals and gaskets for wear or defects.
Inspect the bottom surface of the rotor for scratches,
chips or wear.
Note: If replacement is needed, be sure to use the
current replacement part.
ASSEMBLY
Be sure all parts are in place and in the proper position.
Lubricate ALL o-rings and seals with FDA approved sili-
cone grease. To install the rotor seal, first place the seal
into the valve groove, rounded side down (see cross-sec-
tion). 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 wave washer bearing, the wave washer, and
two o-rings, onto the rotor top shaft. Then center the rotor
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 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. Do not
over tighten.
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
cam.
Motor
Motor Plate
Cam & Gear
O-Ring
Rotor Seal
Drain Seal
Nozzle & Venturi Seal
See Nozzle
Assembly Service
Seal
Wear-Strip
Rotor & Disc
Wave Washer
O-Ring Seals
Switch
FIG. 53
Questions? Call The Kenmore Water Line 1-800-426-9345