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INSTALLATION
AND OPERATING
INSTRUCTIONS
MCWS/CWS SERIES
RESIDENTIAL
WATER SOFTENER
TWO TANK MODELS:
MCWS075ME CWS075ME
MCWS100ME CWS100ME
MCWS150ME CWS150ME
MCWS200ME CWS200ME
MCWS300ME CWS300ME
CAUTION: Damage to the system can occur (including
possible mineral tank structure failure resulting in a water
leak), if system is subjected to a vacuum. The installer
should take appropriate measures to prevent a vacuum.
This would include the installation of an appropriate device
in the supply line to the system, i.e. a vacuum breaker or
backflow protection device. Vacuum damage voids the
factory warranty.
(Installer: Please leave with homeowner)
IN313 0706
a 3M company
CUNO Incorporated
12628 US 33 North
Churubusco, IN 46723, U.S.A.
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Summary of Contents for 3M MCWS075ME
- Page 1 INSTALLATION AND OPERATING INSTRUCTIONS MCWS/CWS SERIES RESIDENTIAL WATER SOFTENER TWO TANK MODELS: MCWS075ME CWS075ME MCWS100ME CWS100ME MCWS150ME CWS150ME MCWS200ME CWS200ME MCWS300ME CWS300ME CAUTION: Damage to the system can occur (including possible mineral tank structure failure resulting in a water leak), if system is subjected to a vacuum. The installer should take appropriate measures to prevent a vacuum.
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Page 2: Safety Information
SAFETY INFORMATION Read, understand, and follow all safety information contained in these instructions prior to installation and use of the CUNO MCWS/CWS Series Residential Water Softener. Retain these instructions for future reference. Intended Use: The CUNO MCWS/CWS Series Residential Water Softener is intended for use in softening water in homes and has not been evaluated for other uses. - Page 3 TABLE OF CONTENTS SECTION DESCRIPTION CONTROL VALVE PROGRAMMING & REGENERATION UNIT & CONTROL VALVE SERVICE & TROUBLESHOOTING SPECIFICATIONS & OPERATING DATA PARTS LIMITED WARRANTY IMPORTANT: SECTION 1: BEFORE INSTALLATION Congratulations! We believe your purchase of this water NOTE: Hydrogen sulfide (H S) must be tested for at the well softener will prove to be a very wise choice.
- Page 4 CHECK YOUR WATER PRESSURE AND PUMPING RATE: 5) DO NOT install the softener in a location where freezing temperatures occur. Freezing may cause permanent Two water system conditions must be checked carefully to damage and will also void the factory warranty. avoid unsatisfactory operation or equipment damage: 6) Allow sufficient space around the unit for easy servic- 1) MINIMUM water pressure required at the water softener...
- Page 5 SECTION 2: INSTALLATION TREATED WATER PRESSURE TANK BRINE TANK WELL WATER SOFTENER FILTER PRESSURE SWITCH. STANDARD WELL INSTALLATION WATER FOR TREATED WATER LAWN SPRINKLERS OR OTHER HIGH DEMAND 110 V OUTPUT SECONDARY PRIMARY SOLENOID PRESSURE PRESSURE VALVE TANK TANK BRINE TANK WELL WATER...
- Page 6 SECTION 2: INSTALLATION IMPORTANT: Failure to follow instructions may void warranty. Step 1. Remove the unit from the shipping box and remove WARNING all packaging. Ensure no freight damage has occurred since shipment from our manufacturing facility. To reduce the risk associated with hazardous Locate the parts package and install the bypass voltage due to installation on a home system and adapter fittings on the control valve to facilitate...
- Page 7 Some areas prohibit the use of flexible drain lines. BYPASS VALVE BRINE LINE Check with local code officials prior to installation. ELBOW INJECTOR COVER CONTROL VALVE BODY DRAIN LINE FLOW CONTROL ASSEMBLY NORMAL OPERATION BYPASS OPERATION Treated Water Supply Water Supply (Untreated) Supply Water Enters...
- Page 8 SPECIAL SERVICE INSTRUCTIONS: Step 15. Refer to SECTION 3, as how to set control valve for the correct time of day. When shifting Under normal circumstances removal of valve should not to daylight saving time and (back), you may be required. However, if it must be removed, it can be done wish to adjust TIME OF DAY accordingly.
- Page 9 SECTION 3: CONTROL VALVE PROGRAMMING AND REGENERATION Step 1 Installer Display Settings (Step 1) Press NEXT and simultaneously for 3 seconds. Step 2 (Step 2) Hardness: Set the amount of hardness in grains of hardness as calcium carbonate per gallon using the buttons.
- Page 10 Diagnostics Step 1 (Step 1) Press simultaneously for three seconds. If screen in step does not appear in 5 seconds the lock on the valve is activated. To unlock press , NEXT, , and SET CLOCK in sequence, then press NEXT and simultaneously for 3 seconds.
- Page 11 Valve History Step 1 (Step 1) Press simultaneously for three seconds and release. Then press simultaneously and release. If screen, to the left, does not appear is 5 seconds the lock on the valve is activated. To unlock press , NEXT, Step 1 and SET CLOCK in sequence, then press...
- Page 12 User Display Settings General Operation When the system is operating, one of two displays will be shown. Pressing NEXT will alternate between the displays. One of the displays is always the cur- rent time of day. The second display is one of the following: days remaining or gallons remaining.
- Page 13 SECTION 4: MAINTENANCE REPLENISHMENT OF SALT SUPPLY: PERIODICALLY CHECK TIME OF DAY SETTING: The salt storage capacity of the brine tank is approximately Power outages will cause “TIME OF DAY” setting to 180 lbs (82 kg). During each regeneration a specific amount become incorrect.
- Page 14 SECTION 5: CONTROL VALVE TROUBLESHOOTING GUIDE a. AC Adapter unplugged a. Connect power b. No electric power at outlet b. Repair outlet or use working outlet 1. Timer does not display time of day c. Defective AC Adapter c. Replace AC Adapter d.
- Page 15 SECTION 5: CONTROL VALVE TROUBLESHOOTING GUIDE Problem Possible Cause Solution a. Motor not operating a. Replace motor b. No electric power at outlet b. Repair outlet or use working outlet c. Defective AC Adapter c. Replace AC Adapter d. Defective PC board d.
- Page 16 SECTION 5: CONTROL VALVE SERVICE INSTRUCTIONS Drive Assembly proceeding instructions regarding removing the drive bracket Remove the valve cover to access the drive assembly. from the drive backplate. The drive gear cover can be WARNING: Disconnect the power source plug (black wire) removed from the drive bracket without removing the motor from the PC board prior to disconnecting the motor or water or the PC board.) The drive gear cover is held in place on the...
- Page 17 Drive Cap Assembly, Main Piston and Regenerant Piston The drive assembly must be removed to access the drive cap assembly. The drive cap assembly must be removed to access the piston(s). The drive cap assembly is threaded back in. This resets the electronics and establishes the service into the control valve body and seals with an o-ring.
- Page 18 . Replace r. T...
- Page 19 SECTION 5: SYSTEM TROUBLESHOOTING GUIDE PROBLEM CAUSE SOLUTION Hard water, (unit not Electrical service to unit interrupted. Assure permanent electrical service (check fuse, plug, pull chain using salt; liquid level or switch.) in brine tank not too Time improperly set. Check programming function.
- Page 20 SECTION 6: SPECIFICATIONS AND OPERATING DATA ITEM CWS075ME CWS100ME CWS150ME CWS200ME CWS300ME MCWS075ME MCWS100ME MCMW150ME MCWS200ME MCWS300ME Nominal Media Volume, Ft 0.75 Salt Efficient Setting i t t i t t e t f y t i s n i...
- Page 21 SECTION 7: PARTS COMPONENT PARTS LIST DESCRIPTION CWS075ME CWS100ME CWS150ME CWS200ME CWS300ME MCWS0751M MCWS1001M MCWS1501M MCWS2001M MCWS3000M Control Valve ,with cover, less bypass, W12M130-5N3-0N W12M170-5V3-0N W12M270-5W3-0N W12M270-5W3-0N W12M530-5G3-0N Metered Initiated (Aqua Pure®) Control Valve ,with cover, less bypass, W12M130-5N3-0E W12M170-5V3-0E W12M270-5W3-0E W12M270-5W3-0E W12M530-5G3-0E...
- Page 22 SECTION 7: PARTS COMPONENT PARTS LIST Front Cover and Drive Assembly Drawing No. Order No. Description Quantity Assembly V3106-01 Drive Bracket&Spring Clip oard Not Shown V3186 AC Adapter 110V-12 * Drawing number parts 2 through 6 may be purchased as a complete assembly, part V3002.
- Page 23 Drive Cap Assembly Assembly Drawing No. Order No. Description Quantity V3005 Spacer Stack Assembly p Assembly V3011 Piston Down ow Assembly V3174 Regenerant Piston V3105 O-ring 215 (Distributor Tube) Not Shown V3001 Body Assembly...
- Page 24 SECTION 7: PARTS COMPONENT PARTS LIST Injector Cap, Injector Screen, Injector, Plug and O-Ring Quantity Drawing No. Order No. Description V3010-1Z Injector ASY Z Plug V3010-1B INJECTOR ASY B BROWN V3010-1C INJECTOR ASY C VIOLET V3010-1E INJECTOR ASY E WHITE V3010-1H INJECTOR ASY H GREEN *The injector plug and the injector each contain one 011 (lower) and 013 (upper) o-ring.
- Page 25 SECTION 7: PARTS COMPONENT PARTS LIST Refill Flow Control Assembly i r c i t n ” 8 ” 8 ” 8 BLFC Retainer Assembly** BLFC Not Shown H4650 Elbow ½” with nut and insert Option *Assembly includes V3182 BLFC. ** Includes drawing #7.
- Page 26 SECTION 7: PARTS COMPONENT PARTS LIST Drain Line – 3/4” Drawing No. Order No. Description Quantity Elbow Locking Clip Polytube insert 5/8 PKP10TS8-BULK V3192 Nut ¾ Drain Elbow V3158-01 Drain Elbow ¾ Male V3159-01 DLFC Retainer Assembly DLFC 1.3 gpm for ¾ V3162-013 One DLFC V3162-017...
- Page 27 SECTION 7: PARTS COMPONENT PARTS LIST Water Meter and Meter Plug Quantity Drawing No. Order No Description ” 1 Meter Assembly (includes drawing #3 & #4) Meter Plug Assembly...
- Page 28 SECTION 7: PARTS COMPONENT PARTS LIST Order No: V3007-02 Order No: V3007-03 Description: Fitting 1” Brass Sweat Assembly Description: Fitting 3/4” Brass Sweat Assembly Quantity Quantity Drawing No. Order No. Description Drawing No. Order No. Description V3151 Nut 1” Quick Connect V3151 Nut 1”...
- Page 29 SECTION 7: PARTS COMPONENT PARTS LIST Bypass Valve Description Quantity Drawing No. Order No. V3151 Nut 1” Quick Connect Split Ring Bypass 1” Rotor Bypass Cap Bypass Handle V 3148 Bypass Rotor Seal Retainer V3191-01 Vertical Adapter Assembly Description Quantity Order No.
- Page 30 SECTION 7: PARTS COMPONENT PARTS LIST Wrench (Order No. V3193-01) Although no tools are necessary to assemble or disassemble the valve, the wrench (shown in various positions on the valve) may be purchased to aid in assembly or disassembly. 7-10...
- Page 31 SECTION 8: LIMITED WARRANTY Please read and complete the following limited warranty and mail the bottom half within 10 days of purchase CUNO Incorporated warrants to the original purchaser-consumer of its such loss or damages are sought, including breach of warranty or Product that it is free of defects in materials and workmanship.
- Page 32 CUNO, Aqua-Pure and MacCLEAN are trademarks of 3M Company used under license. © 2006 3M Company. All rights reserved.