STEP #2:
Put the radon system in by-pass. If you own a "Bubble-Up" system,
swing the "Service/By-Pass" valve to the By-Passed position.
If you own an "AIRaider" system, push the slide "push to by-pass" all
the way into the by-passed position (you may have to push a bit).

STEP #3:
Get a bucket or a sizable bowl and place it below the test bib (spigot)
that is located just before the #3 ballvalve.

STEP #4:
Open the spigot to release the water pressure within the filter cartridge.
Wait until the water stops coming from the spigot. Close spigot.

STEP #5:
Stabilize the plumbing with one hand while you loosen the filter
cartridge sump using the filter wrench that was provided at installation.
(Remember: righty tighty - lefty loosy)

STEP #6:
Dump the dirty filter and water into bucket and rinse out sump.
· IMPORTANT! DO NOT LOOSE THE SUMPS' RUBBER "O" RING.
· If it falls from the inside top of the sump, wipe it clean and replace it.

DO NOT USE VASOLINE ON RUBBER "O" RING.
USE SILICONE ONLY!

STEP #7:
Insert a new 5 micron sediment filter (not taste & odor) cartridge into the
sump. Sanitize by adding a small cap-full of chlorine bleach into sump.

STEP #8:
Replace the filter sump (with new cartridge) being very careful not to
"cross thread" it while screwing it back on.
· DO NOT USE WRENCH TO RE-TIGHTEN SUMP.
· HAND TIGHTEN ONLY!

STEP #9:
Open ballvalve #2 and refill sump. If it leaks, close ballvalve #2, repeat
steps #3 & 4 and tighten slightly. If it still leaks, close ballvalve #2 and repeat procedure starting at Step #3. If no leaks occur, open #3 ballvalve and return the by-pass valve/slide to the service position.

CONGRATULATIONS!

CARTRIDGE FILTER CHANGE IS COMPLETE.