Hot Tub Filter Repair and Maintenance page 5

8. Start Up Starting up the newly installed filter is just like restarting after cleaning, as outlined above. Of course, wait for all glue to dry completely, following the instructions on the product container.

Leak Repairs

RATING: EASY

Filters, being rather simple creatures, don't have many repair or maintenance problems beyond cleaning, as discussed. The biggest general complaint, however, relates to leaks of various kinds. Lids on filters leak in two places: the O-ring that seals them to the tank and/or the pressure gauge air relief valve assembly. The lid O-ring can sometimes be removed, cleaned, turned over (or inside out), and reused.

Some filters will crack on the rim of either the lid or the tank where the O-ring is seated. Obviously, the problem in this case is not a bad O-ring, but a bad lid or tank. Inspect these stress areas carefully for hairline cracks that may be the problem.

Air relief valves sometimes leak if they become dirty or simply worn out. Some are fitted with an external spring that applies tension to create the seal, and when the spring goes, so does the watertight seal. Others have a small O-ring on the tip of the part that actually screws in to create the seal. Unscrew this black plastic type of valve all the way. The "bolt" part will come out to reveal the O-ring on the tip that makes the seal, and you can easily replace that.