FILTER CARTRIDGE REPLACEMENT INSTRUCTIONS
To reduce the risk associated with property damage due to water leakage:
• The disposable fi lter cartridge must be replaced every six months or at the specifi ed service cycle.
Replace cartridge at least every 6 months or when there is a decided decrease in water flowing from the faucet or
when objectionable taste and/or odors return. Always have spare cartridges on hand.
1. Close shutoff valve.
2. Open faucet to relieve pressure.
3. Unscrew housing to the left from the head of the filter. Have a small pan handy to catch any spillage. Unscrew used
cartridge to the left and discard.
4. Thread in new cartridge and hand tighten about 5-6 revolutions. Do not overtighten.
5. Remove o-ring from top of housing and lubricate with a thin film of a silicone based lubricant and put it back in
housing groove. If o-ring is stretched or damaged, replace it with a new o-ring.
6. Thread housing on filter head and hand tighten.
7. Open shut-off valve and allow water to run for five minutes. Water may run cloudy but will clear quickly.
NOTE: If a leak occurs at the housing, close the shut-off valve and open the faucet to relieve pressure. Remove the
housing and check the o-ring for correct placement or damage. Install a new o-ring if necessary to stop leaks.
REPLACEMENT PARTS
Head
68586-31
Filter Cartridge
AP217
Bracket
68614-31
O-Ring
36851-35
Housing
64623-31
CAUTION
LIMITED WARRANTY
CUNO Incorporated, a 3M Company, warrants that
this product is free from defects in materials and
workmanship. This warranty, together with any and
all warranties implied by law, shall be limited to a
period of five (5) years from the date of original
purchase. This warranty does not apply to failures
that result from abuse, misuse, alteration or dam-
age not caused by CUNO or failure to properly
comply with these installation or cartridge change-
out instructions. This warranty is subject to exclu-
sions and limitations. Please refer to the Warranty
Card provided with the product for details.
Screws
68729-31
5 Year Limited Warranty