29H. Place each cartridge back into skimmer well, then rotate eachcartridge handle clockwise to thread back into the fitting. Note thedirection of installation. Do not over tighten.I. Install clean skimmer bag back onto clips as shown.J. Tilt filter cover back against clips, then lift approx. 3/8” tolatch against spa shell.L. Turn power to spa back on. Periodically, both filter cartridges will need a more thorough cleaning. We suggest cleaning as shown (Point F). Soak the filterovernight in a plastic container filled with a solution of water and aspecific cleaning product. The cartridges last approximately two years with proper care, ro-tation, and water quality maintenance. Replacement cartridgesmay be purchased from your Jacuzzi Premium dealer.Draining and refillingAbout every 3 to 6 months, you will want to replace the waterin the spa. Frequency of water replacement depends on fre-quency of use, care taken in maintaining water quality, etc.You will know it is time for a change when you cannot controlsuds and/or you can no longer see the normal sparkle to the wa-ter, even though the key water balance measurements are allwithin the proper parameters.WARNING! Turn off power to spa before draining it. Donot turn the power back on until your spa has been re-filled.If it is extremely cold, and the spa is outdoors, freezing couldoccur in the pipes of the hydraulic system (see the section on“Winterizing”).To drain your spa, perform the following steps:1. Turn off power to spa.2. Locate the drain valve on the front lower plastic pan. Hold thelarger (rear) body to prevent it from turning, then loosen and re-move the cap.3. Connect a garden hose.4. Rotate the rear valve body 1/3 turn counter clockwise to un-lock the drain valve.5. Pull the larger (rear) body outward to open drain.6. After the spa drains, perform steps 2-5 in reverse order toclose the drain prior to refilling the spa.7. After refilling,turn on power to the spa and follow the stepslisted under "Start-up instructions"N.B.: Always fill your spa through both filter fittings.Keep your spa cleanTo preserve the sheen of your spa’s surface, it is crucial thatyou avoid using abrasive cleaners or cleaners which have ad-verse effects on the surface.Regardless of the cleanser used, use extreme care to assurethat no soap residue is left on the surface. This could causesuds when the spa is refilled.Headrest CareRemove and clean the headrest cushions as needed with soapywater using a cloth or soft-bristle brush.N.B.: Always remove the pillows when adding chemical shocktreatment to the spa water. The pillows can be returned to the s-pa when the sanitizer reading drops below 4 ppm.To remove the headrests:H I J2.3.4.5.2.3.4.5.