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Instructions for Installing Your SHU Type Undersink Water Filter System

Product Codes: SHU1000 I SHU2000 I SHU3000 I SHU4000 | SHU4000 / AD10 I SHU+ASC-2000 I SHU+ASC2000-FD |  SHU+ASC-3000

Thank you for your purchase. Please follow the instructions below carefully. 


1) Remove Old Unit

a) Turn off water supply
Open sink top tap to relieve pressure
c) Take old filter and disconnect tubing from both ends

2) Check your in / out Tubes

Make sure the ends are cut squarely and are free from any scratches or burrs.

If in doubt trim tube back a bit using a stanley / razor knife. 

Please note: This housing accepts standard ¼ inch Outside Diameter (OD) tubes. If your tube doesn't push fit in then Measure your tube Outside Diameter (OD) and find your adapter here 

3) Position Your New Housing

Insert the cartridge into the housing. (It might already be inside.)

Make sure all plastic packaging is removed from the cartridge.

The top of the housing unscrews lefty-loosey/rightey-tightey ie normally.

Make sure the housing is tightened - use the plastic wrench but don't overdo it (you'll have to undo it later!)

You can either attach the housing to the cupboard wall (using screws through holes in the bracket at the top of the housing)...     

OR you can leave it free standing. If so it's best practice to keep it upright. (But that's not crucial.)

Whichever way you decide to position the housing make sure the in/out tubing is not kinked.

TIP If attaching to the wall, choose a position which will make future cartridge changing simple ie leave a couple of inches below for easy unscrewing / detaching of the bottom half.

4) Connect the Tubes

Insert the tubes into the housing unit:

First take the "IN" tube ie the tube that comes from the saddle valve / your water supply.

At the top of the housing locate the INLET side. The flow arrow points left to right so the IN is on the left. Push the tube firmly into this fitting.

Pull to check it is fastened in.

Repeat with the "OUT" tube (ie the one that goes to your tap).

Note: To remove the tubes you simply push the little collar in towards the fitting. This releases the tube - which you must pull simultaneously. To access the collet on the in valve you can lever off the blue clip (if there is one - these are non essential items).

5) Commissioning the System

Now turn on the water supply and check for leaks. If there is a leak the housing should be tightened further.

Run about 2 gallons of water (approximately a sink full) to flush the cartridge. Your water is now safe to use.

Always repeat this flushing process after any non-use of unit for more than 2 days.

6) Add Your Reminder Labels and Timer

Finally, on the front of the filter, in a convenient place stick on

a) The date change label / and write in your change date

    b) The timestrip / And push/click the timestrip button in firmly to start the timer.

    Any Problems? Please Telephone 020 8761 6611

    Important Note re Reminders

    To avoid long term bacteria build-up it is important to change or disconnect your water filter cartridges on time.

    We will email you reminders when it's time to change, but please make sure you whitelist our email address so these reminders aren't sent to spam.

    And/ or set an alarm now on your mobile or use Siri etc

    Please note your feedback and any suggestions as to how we can improve our service are always appreciated.


    Thank you

    Sales Admin Team
    Telephone 020 8761 6611

    Water Filter instructions / Guides for fitting and installing


    Need advice?
    Please call us on
    020 8761 6611


    UK Water Filters Ltd
    Unit D120
    Parkhall Industrial Centre
    SE21 8DE

    UK Water Filters Ltd a Company Limited by Guarantee,
    Registered in England,
    Company Number: 05249436,
    VAT Reg. No. 863 7634 91


    Questions? Call us for friendly advice
    +44 (0) 20 8761 6611




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