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FILTER MAINTENANCE
At least once a week, check and clean the skimmer basket and weir to ensure proper filter flow. Remove leaves,
foreign matter, and debris. It is very important to keep your spa filter cartridge clean and free of particles to ensure
proper water flow. A clean filter permits the hydrotherapy system to function properly and also allows more efficient
filter cycles. Depending on how frequently your spa is used, we recommend cleaning the spa filter cartridge every
four weeks. If this is not done, the filter may clog and restrict water flow, which causes improper filtration, poor jet
performance and possibly freezing.
IMPORTANT:
The frequency and duration of use, and the number of occupants all contribute to determining the
appropriate time between filter cleanings. More use means that more frequent filter cleanings will be required.
FILTER CARTRIDGE REMOVAL AND CLEANING
INSTRUCTIONS
Turn the power to the spa off, then proceed as follows:
1. Push down slightly and turn filter basket counter-clockwise to unlock, then pull out the basket and weir.
2. Carefully pull up the filter cartridge and bring it out of the spa.
3. Always clean the filter using a filter degreaser to remove mineral and oil build-up. Simply soak the filter in
the degreaser (according to the package directions), then place the filter on a clean surface and spray until
clean using a garden hose. It may be necessary to rotate the filter while spraying to remove any debris
lodged between the filter pleats.
4. To return basket and weir, insert and rotate clockwise to lock into position. Then, turn spa’s power back on.
NOTE:
Replacement filter cartridges are available from your
CALDERA
dealer. Refer to the back of this manual to
determine the appropriate size for your spa.
DIVERTER VALVE MAINTENANCE
If your spa’s diverter valves become difficult to turn, it is likely that sand or grit has become lodged inside the valve body. It is very important that this debris is removed as
soon as possible to avoid damage to the valve. To accomplish this, follow this procedure:
1. Turn off power to the spa by tripping both GFCI breakers located in the subpanel.
2. Unscrew the cap ring to remove the diverter valve’s handle as cap ring comes upward.
3. Remove the valve body by pulling it upward.
4. Wipe the valve body and the interior walls of the valve clean.
5. Lubricate the o-rings with a waterproof lubricant available from your
CALDERA
dealer.
6. Reassemble the valve and turn power to the spa on.
MAINTENANCE
Aventine Filter System
Filter
Basket
Adaptor for
Monarch Silver
Cartridge
Floating Weir
Standpipe
Filter
Basket
Floating Weir
UTOPIA
&
PARADISE
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