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3M Purification Inc. warrants 

the stainless steel head only to be free from defects in material and workmanship for twenty-fi ve (25) years from the date of pur-

chase. 

 The disposable filter cartridge or membrane is warranted from defects in material and workmanship for a period of one (1) year from the date of 

purchase. This warranty does not cover failures resulting from abuse, misuse, alteration or damage not caused by 3M Purification Inc. or failure to fol-
low installation and use instructions. No warranty is given as to the service life of any filter cartridge or membrane as it will vary with local water condi-
tions and water consumption. 

3M PURIFICATION INC. MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT 

NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED 
WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOMER OR USAGE OF TRADE. 

 If the Product fails to satisfy this Limited 

Warranty during the warranty period, 3M Purification Inc. at it’s option will replace the Product or refund your Product purchase price.   This warranty 
does not cover labor.  

The remedy stated in this paragraph is Customer’s sole remedy and 3M Purification Inc.’s exclusive obligation.  

This warranty gives you specific legal rights, and you may have other rights which may vary from state to state, or country to country.  For any 
warranty questions, please call 1-800-222-7880 or mail your request to: Warranty Claims, 3M Purification Inc., 400 Research Parkway, Meriden, 
CT 06450.  Proof of purchase (original sales receipt) must accompany the warranty claim, along with a complete description of the Product, model 
number and alleged defect. 

Limitation of Liability.

  3M Purification Inc. will not be liable for any loss or damage arising from this 3M Purification Inc. product, whether direct, 

indirect, special, incidental, or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability.  Some 
states and countries do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not 
apply to you.  

LIMITED WARRANTY

FILTER CARTRIDGE REPLACEMENT INSTRUCTIONS

Filter life depends on local water conditions and the volume of water 
used. The disposable filter cartridge MUST be replaced every 12 
months, at the rated capacity or sooner if a noticeable reduction in flow 
rate occurs. 

NOTE:

 Before changing cartridge, turn off water supply. Place a bucket 

under filter to catch the small amount of water that may run out after 
cartridge removal.

1.  Close shut-off valve #2 (fig. 2) upstream of filter system, leaving down-

stream shut-off valve #3 (fig. 2) open.

2.  Open a faucet downstream of the filtration system to depressurize the 

system.

3.  Once filtration system has been depressurized, close the downstream 

shut-off valve #3 (fig. 2).

4.  Slide cartridge locking latch to the right and lift up.

5.  With both hands, twist out filter cartridge by turning unit 90° counter-

clockwise (to the left) and down.

6.  Install new replacement cartridge into head by pushing cartridge up 

and turning clockwise (to the right) until locking latch clicks into place.

7.  Slowly open upstream shut-off valve #2 (fig. 2) until filtration system 

fills with water.  Slowly open downstream shut-off valve #3 (fig. 2). 
Flush at least ten (10) gallons through system before use.

TROUBLESHOOTING GUIDE

Water Leaks at Fittings:

Check solder joints, unions and cartridge and filter head connection

Shut off water at the main water supply shut-off 

valve, remove threaded fittings, reapply PTFE tape in a clockwise (to the right) direction and screw back onto head 
assembly.

CAUTION

To reduce the risk associated with property damage due to water leakage:

 

• 

The disposable fi lter cartridge 

MUST

 be replaced every 12 months or at the rated capacity or if a noticable reduction 

in fl ow rate occurs.

 

Step 4

Step 5

Step 6

Summary of Contents for AP903 Series

Page 1: ...fter water is shut off The disposable lter cartridge MUST be replaced every 12 months at the rated capacity or sooner if a noticeable reduction in ow rate occurs Read understand and follow all safety...

Page 2: ...le Wrench F Torch not shown G Plumbing Solder not shown H Plumbing Flux not shown NOTE Additional plumbing supplies may be required for optional bypass installation GETTING STARTED City Water Installa...

Page 3: ...sure internal key ring is positioned correctly by rotating clockwise to the right until it snaps into place 8 Turn main water supply back on While water is running through faucet close valves 2 and 3...

Page 4: ...direct indirect special incidental or consequential regardless of the legal theory asserted including warranty contract negligence or strict liability Some states and countries do not allow the exclus...

Page 5: ...de desag e La instalaci n y la utilizaci n del producto DEBEN cumplir con todas las normas de plomer a estatales y locales Evite el congelamiento quite el cartucho cuando las temperaturas puedan ser i...

Page 6: ...ve ajustable F Soplete no se muestra G Soldadura para plomer a no se muestra H Resina fundente para plomer a no se muestra NOTA La instalaci n del paso de derivaci n opcional puede requerir materiales...

Page 7: ...de derivaci n recomendado 4 Monte el cabezal del filtro sobre el sistema de derivaci n opcional como se muestra en la Figura 2 Utilice tres v lvu las de bola y una unidad de filtrado como se muestra e...

Page 8: ...al de acero inoxidable sin incluir los cartuchos de filtro desechables estar libre de defectos en los mate riales y la mano de obra durante veinticinco 25 a os desde la fecha de compra Esta garant a n...

Page 9: ...Prot ger du gel et retirer la cartouche si la temp rature ambiante doit descendre sous les 4 4 C 40 F Ne pas installer sur la canalisation d alimentation en eau chaude La temp rature maximum de fonct...

Page 10: ...non illustr e G Soudure de plomberie non illustr e H Fondant de soudure non illustr REMARQUE Pour une installation avec d rivation en option calculer davantage de fournitures de plomberie ATTENTION A...

Page 11: ...ssaire afin d installer la t te du filtre et la d rivation recommand e 4 Assembler la t te du filtre sur la d rivation en option comme illustr la figure 2 Utiliser trois robinets bille et un module de...

Page 12: ...jetables contre les d fauts de mat riel et de main d oeuvre pour une p riode de vingt cinq 25 ans partir de la date de l achat Cette garantie ne couvre pas les d fectuosit s occasionn es par une util...

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