Sears 625.34845 Service TECH. Information 5B.ROTARY Valve Service, Disassembly, Assembly

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SECTION 5

SERVICE TECH. INFORMATION

5B.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 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 A in drawing) toward the backside of the valve to allow pressure water to bleed out. Catch the 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 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￿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.

BEFORE TIGHTENING THE SCREWS, INSTALL THE VALVE CAM AND GEAR. THEN TURN THE ROTOR (CLOCKWISE ONLY) TO SERVICE POSI< TION. Tighten the screws using a criss<cross pattern. If a torque wrench is available, torque to 30<40 inch pounds.

switch

valve cam & gear

SEE NOZZLE

ASSEMBLY SERVICE,

SECTION 3

 

flow plug (backwash

 

and fast rinse flow

 

rate control)

 

rotor & disc

 

o±ring

wear strip

 

seal

rotor seal

cross±section

drain seal

view

 

nozzle &

 

venturi 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.

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Contents Save this Manual 625.3484500Sears Installation Policy Sears Installation Warranty WarrantyFull ONE Year Warranty on Water Softener Full TEN Year Warranty Against LeaksSoftener Start UP Table of ContentsService Tech Information Repair PartsSection Water Softener START-UP Safety Guides±valve SET Present Time of DAY Water Softener START-UP 1C.PROGRAM the TimerSET Recharge Regeneration Time SET Water Hardness NumberADD Water Water Softener START-UPSanitizing the Water Softener Water Softening Salt with Iron Remov Water Softener START-UP 1E. Fill the Storage Tank with SaltProgram Memory HOW Your Water Softener Works 2A.FACE Plate Timer FeaturesError Code Extra RechargeFill Backwash Brining Fast Rinse Brine Rinse ServiceWater Flow Through the Softener in Brining and Brine Rinse Water Flow ThroughSoftener in Backwash Electronics Automatic BypassSalt Bridge Please see page 9 for Salt Filling Directions Salt BridgeIron from the Resin BED Care of Your Softener 3B. Keeping the Water Softener CleanCovers Nozzle and VenturiSoftener Drain Water fromNo Soft Water Problem Cause CorrectionBypass Valves Other Things to Know 4A.DIMENSIONS/SPECIFICATIONSAlways Make These Initial Checks First Service TECH. Information 5A.TROUBLESHOOTINGManual Initiated Electronics DIAG- Nostics Automatic Electronic Diagnostics± P Service TECH. Information TroubleshootingManual Advance Regeneration Check Servicing the Valve Service TECH. Information 5B.ROTARY Valve ServiceDisassembly AssemblyFill Cycle Service CycleBackwash Cycle Brining and Brine Rinse CyclesFast Rinse Cycle Service TECH. Information Sears Water Softeners Model NOS .3484400 Sears Water Softeners Valve Assembly Bypass Installation Valve Model no Parts ListOwners Manual Model no

625.34845, 625.34844 specifications

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