3M AP11T Installation And Operating Instructions Manual page 6

FILTER CARTRIDGE REPLACEMENT INSTRUCTIONS
To reduce the risk associated with property damage due to water leakage or flooding:
•
Change the disposable filter cartridge every six months or sooner if you observe a
noticeable reduction in water flow rate.
1. A11T: Shut off inlet and outlet valves, depress pressure relief button on top of filter head to relieve pressure in filter.
AP101T, AP141T and AP102T: Turn valve handle to "OFF" position. The inlet and outlet lines are now closed off
from the filter chamber and the pressure has been released at the built-in vent port. (Figure R-2).
2. Unscrew housing to the left from the filter head and remove cartridge, emptying water from housing.
3. Clean and inspect all components. Lubricate o-ring with a silicone based lubricant. Replace o-ring seal if there is
visible damage.
4. Install new cartridge into housing, over centering post if you have a two-high unit.
5. Place lubricated o-ring on the housing. Screw housing to the right firmly onto head until a definite stop is felt and
cartridge is sealed. Hand tight is sufficient. However, be sure not to overtighten or force housing.
6. A11T: Turn on inlet valve and depress pressure relief button until air is purged from filter. Release button and turn
on outlet valve.
AP101T, AP141T and AP102T: Turn valve hand to the "ON" Position. Wait until filter is filled with water and check
for leaks. Open and close the valve once to released trapped air. Allow a slight pause in the "OFF" position. Replace
cartridge when there is a decided drop in water flow at the faucet or tap.
• DO NOT leave valve-in-head models in "OFF" position for an extended period of time or use as a substitute
for main water line valve if line must be shut off for servicing.
1
1
ON
NOTICE
NOTICE
1
2
AP101T, AP141T and AP102T
2
AP11T
6
ON
5
6
6
4
5
OFF
4
5