SECTION 5

SERVICE TECH. INFORMATION

5B.ROTARY VALVE SERVICE

Before working on the valve, turn offthe water

supply and disconnect from electrical power.

TO RELIEVE PRESSURE:

--3VALVE BYPASS: Close the inlet valve and open a soft water faucet. Then close the outlet valve and

open the bypass valve.

--SEARSSPECIAL BYPASS: Slide the bypass valve

stem to bypass position. Loosen the 3 hex head

screws (see A in drawing) toward the back side of

the valve to allow pressure water to bleed out Catch water with a rag.

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 30-40inch pounds.

 

 

switch

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 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.

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_ 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.

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.

9,1

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Sears 625.34854, 625.34855 Service TECH. Information 5B.ROTARY Valve Service, Disassembly, Servicing the Valve, Assembly

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