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P. INSTALLATION TROUBLESHOOTING

Problem:   Leak at the feed water tapping valve.
Cause: 

Tapping valve is not clamped tightly enough.

Solution:

Tighten the tapping valve clamp screws evenly and

firmly keeping both halves of the bracket parallel.  Be sure not
to deform tubing.

Problem:  Leak at the drain saddle.
Cause:

Drain saddle not clamped tightly enough.

Solution:

Tighten the drain saddle screws evenly and firmly.

Problem:  Leak at the fittings threaded connection.
Cause:

Fitting is improperly taped or not 

tightened sufficiently.

Solution:

Retape the threaded portion with Teflon

®

tape and

thread it in firmly.  Do not over tighten.

Problem:  Leak at the fitting's push-in connection.
Cause:

Tubing is defective if there is a tubing misassembly.

Solution:

Remove the tubing.  Squarely cut off 1/4 inch from

the end of the tubing using a sharp razor knife and reinsert it
into the fitting.  Make sure that the tubing is pushed in com-
pletely until it seats.

Problem:  Leak at the filter cartridge head.
Cause: 

Defective or misaligned O-ring.

Solution: 

Close the feed water tapping valve and the storage

tank valve.  Lift up on the faucet handle and drain the tank a
minimum of 5 minutes.  Remove the filter cartridge and check
the condition of the O-rings.  If they are misaligned, reseal
them.  If they are damaged, replace them.

Problem: The faucet leaks from the spout with the handle down.
Cause:

An obstructed or defective valve seat in the faucet

mechanism.

Solution:

Remove the faucet spout with a twisting/lifting

motion and slide the faucet handle forward over the spout hole
to gain access to the faucet valve.  Unscrew the tee-bar and
the slotted bushing to remove the valve.  Clean out any
obstruction or replace it with a new valve mechanism if neces-
sary.

Problem:  No steady drip from the open faucet after the
tank is drained.
Causes:

The feed water tapping valve is not open.

The feed water tapping valve is not installed properly.

A leak from any product water fitting connection.

The icemaker valve was left open before the start-up 
procedure completed.

Air is still trapped in the system.

Solutions:

Open the feed water tapping valve completely.

Check the feed water tapping valve installation to make 
sure that the needle has pierced the tubing.

Correct the fitting leak as outlined above.

Close the icemaker valve and wait until the faucet drips.

Wait for the air to be purged from the system.

Problem:  Water leaks from air gap module opening.
Causes:

The drain line tubing is looped, kinked, or has a low spot.

The drain line is blocked or the drain hole is not drilled 
through completely.

Air is locked in the air gap outlet.

There is excessive RO reject flow.

Solutions:

Trim any excess tubing to obtain a short, "straight-shot" to 
the drain.

Check to see that the drain line is clear of any obstruction 
and remove the drain saddle fitting to verify that the hole is 
drilled through completely.

Blow air into the air gap outlet using a short length of tubing.

Disconnect the red SFC reject tubing from the faucet air 
gap inlet tubing and check the reject flow rate.  It should 
be less than 175 ml/min.  If it is greater than 175 ml/min., 
replace the red SFC reject tubing with the new one of 
proper length.

Problem:  Too little or no reject flow.
Causes:

Red SFC reject tubing is plugged or defective.

The feed water tapping valve is not open.

An obstruction in the faucet air gap module.

Solutions:

Replace the SFC reject tubing with one of proper length.

Open the feed water tapping valve completely.

Remove the air gap module and inspect the internal flow 
path.  Replace the air gap module if necessary.

Problem:  Chlorine or other unpleasant taste/odor is evi-
dent after the initial tank filling.
Cause:

Residual preservative/sanitizer is still in the water.

Solution:

Drain and fill the storage tank several times if 

necessary.

Problem:  Noise in the drain (gurgling or 
dribbling sound).
Cause:

The reject water is dripping into the standing water in

the drain trap.

Solutions:

Make sure that the 3/8" black drain tubing from the faucet 
air gap module slopes continuously downward to the drain 
saddle without any loops or low spots.

Angle the drain piping so that the reject water runs down 
the side of the drain pipe.

Change the location of the drain saddle to the horizontal 
drain pipe or any alternate vertical drain pipe which is 
farther from the trap.  Properly plug the original hole.  

Caution:

Make sure the drain saddle is always installed 

above (before) the trap.

12

Summary of Contents for SQC Series

Page 1: ...1 CUNO Incorporated 98 880040 1101 SQC Series Owner s Manual This Manual is for the Installation Operation and Maintenance of the WATER FACTORY SYSTEMS SQC Series Reverse Osmosis RO Drinking Water Appliance ...

Page 2: ... Caution The RO membrane cartridge is shipped with a preservative solution inside Make sure to flush it thoroughly as directed before the first use TABLE OF CONTENTS I Installation Instructions A Determine the appliance location 3 B Prepare the area for installation 3 C Prepare the appliance for installation 4 D Make the faucet mounting hole 4 E Mount the faucet 5 F Install the feed water tapping ...

Page 3: ......

Page 4: ...including routing and any additional tools fittings and tubing that may be required B PREPARE THE AREA FOR INSTALLATION Remove supplies from under the sink and stack them neatly away from the working area Arrange a light for the work area if necessary If a basement installation is called for determine where the components will be located and how they will be mounted Special mounting brackets and h...

Page 5: ...ty glasses by worn dur ing the sink hole drilling operations in order to prevent eye injury Before drilling the hole always check underneath the sink to ensure that nothing will interfere with mounting the faucet such as reinforcing ribs support brackets or the cabinet construction Stainless steel sink air gap or non air gap faucet Recommended tools Center punch Variable speed drill and high speed...

Page 6: ...b on the air gap faucet Push it on firmly until it seats 5 From above the sink counter top feed the air gap tubing and the threaded nipple through the faucet mounting hole and position the faucet spout over the sink 6 From below the sink countertop install the white spacer open side toward the air gap tubing flat washer and hex nut onto the threaded nipple and tighten it by hand 7 Back off on the ...

Page 7: ...or drain connections States prohibiting the use of saddle valves are Alaska Delaware Idaho Kentucky Massachusetts Michigan Minnesota New Hampshire North Dakota Ohio and South Dakota Check your local plumbing codes for any restrictions that apply Massachusetts CMR 248 strictly prohibits the use of saddle type valves The feed water connection must conform to applicable plumbing codes Rigid Metal Pip...

Page 8: ...ly IMPORTANT After the installation is complete it is recom mended that the 3 8 x 1 4 union connector be saved for future use in tank sanitization H INSTALL THE DRAIN CONNECTION IMPORTANT Before starting this procedure inspect the con dition of the drain piping especially in older homes where the traps and tailpieces can be deceptively thin and frail If they are in poor condition it is wise to inf...

Page 9: ...on on the purification assembly 2 Attach the 1 4 x 3 8 union to 1 4 blue tubing on faucet 3 Connect the 3 8 blue tubing from the purification assembly to the other end of 3 8 x 1 4 union 4 Route the 3 8 black tubing from the faucet air gap to the drain saddle so that it slopes continuously downward without any loops or low spots Cut the tubing to the proper length and connect it to the drain saddl...

Page 10: ...mpty When the tank is empty the faucet will drip steadily Measure and record the rate at which water drips from the faucet Use a graduated cylinder in milliliters and a watch with a second hand to calculate the approximate production in gallons per day milliliters per minute x 0 38 gpd Proceed to check the reject flow by disconnecting the tubing at the drain connection and measuring the drip rate ...

Page 11: ...old Water Supply Pipe 3 8 Yellow Tubing Storage Tank 1 4 green tubing Air Gap Device e g Gap A Flow Laundry Sink Standpipe or Floor Drain Basement Floor Storage Tank Valve Red SFC Tubing Purification Assembly For best flow keep the tubing as short as possible Mount the storage tank on a shelf or strap it between two floor joists 1 4 Orange Tubing ...

Page 12: ...f the mounting holes Install wall anchors and or mounting screws as required Leave the screw heads protruding to allow the bracket mounting slots to slide over them See Fig 7 The tank may be oriented either vertically or horizontally and can be placed on a shelf on the floor or suspended from the ceil ing supports using brackets An effort should be made to minimize the distance between the tank an...

Page 13: ...e completely Check the feed water tapping valve installation to make sure that the needle has pierced the tubing Correct the fitting leak as outlined above Close the icemaker valve and wait until the faucet drips Wait for the air to be purged from the system Problem Water leaks from air gap module opening Causes The drain line tubing is looped kinked or has a low spot The drain line is blocked or ...

Page 14: ... the TFCM membrane from chlorine attack To find out the chlorine level in a water supply call the public water supplier With free chlorine levels up to 1 mg L the carbon prefilter should be changed every year With free chlorine levels exceeding 1 mg L the carbon prefilter should be changed every six months When to Replace the Carbon Postfilter Cartridge If the filter is being used to control taste...

Page 15: ... silicone lubricant or glycerin wet the O ring seals to make cartridge insertion easier 9 Reconnect the red SFC reject tubing by inserting it into the fitting at the bottom of the new RO membrane cartridge as far as it will go Line up the cartridge ears insert the cartridge and push it into the head until it is fully seated Twist the cartridge 1 4 turn counterclockwise to lock it into place 10 Ope...

Page 16: ...ready to use as soon as the tank refills If any objectionable taste is noticed then drain the storage tank again and allow it to refill How to Sanitize the Purification Assembly Sanitizing the Purification Assembly generally requires A new prefilter cartridge Common household bleach 5 25 non scented A standard eyedropper or equivalent 1 Close the feed water tapping valve and lift up on the faucet ...

Page 17: ...CUNO Incorporated 400 Research Parkway Meriden CT 06450 U S A Toll Free 1 800 733 1199 Worldwide 203 237 5541 Fax 203 238 8701 www waterfactorysystems com www cuno com ...

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