Disassembly, Servicing the Valve, Assembly

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:

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

(:)pen 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 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 completely disassemble.

SERVICING THE VALVE

Inspect all (:)-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 tOuse the

current replacement part.

ASSEMBLY

Be sure all parts are in place and in the proper position. Lubricate ALL ()-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 ()-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

position. Tighten the screws using a criss-cross

pattern. If a torque wrench is available, torque to 30-40 inch pounds.

valve cam

///and gear

SEE NOZZLE
ASSEMBLY	SERVICE,	_		flow	plug (backwash
PAGE	16	_'B,jl		and	fast	rinse flow
		v	,
	"-_.	(_		rate		control)
screen	_	_jf--rotor				& disc
support-"'--'-=_		flow plug j_
nvo_@zNi_:; p		_			o-r,ng

and

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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