HotSpring Spas are equipped with balanced filtration, meaning that the filter cartridges are sized to meet the needs of the jet pump system. Additionally a separate filter is dedicated to serving the 24-hour circulation system.

As with any water filtering system, the filter cartridges may become clogged, resulting in reduced water flow. In your HotSpring® spa, it is important to maintain a clean, unobstructed filtering system. This not only provides maximum performance from the jets, but allows the 24-hour filtration system to function effectively. Watkins Manufacturing Corporation recommends the filter cartridges be cleaned (either by spraying clean with water or by soaking to dissolve minerals) once every month.

SERVICE NOTE: Rotating the placement of the filter cartridges within the filter compartment after each cleaning will help extend their service life.

WARNING: Failure to maintain the cartridges in a clean, obstructed manner will result in reduced water flow through the heater assembly that may cause the High Limit Thermostat or Heater Thermal Cut-Off to trip. If this high limit or thermal cut-off trip occurs during sub-freezing temperatures and goes unnoticed, the spa water may freeze. Any damage to the spa (due to freezing) caused as a result of poor maintenance will not be covered by your spa warranty.

Filter Cartridges Removal and Installation Instructions

1. Remove and carefully set aside the filter compartment cover.
2. Remove any floating items from within the filter compartment.
3. Turn the filter handle (located on the top of the filter cartridge) counter-clockwise until the retainer can be removed from the filter standpipe.
4. Remove the filter retainer and cartridge.
   SERVICE NOTE: Never remove the filter standpipe. Debris may find its way into the internal plumbing which may result in blockage. NEVER REMOVE SUCTION FITTINGS.
5. To reinstall the filter cartridge, reverse order of steps in which it was removed. Do not over-tighten!

Filter Cartridge Cleaning Instructions

Always clean the filters using a filter degreaser to remove mineral and oil buildup. Simply soak the filter in the degreaser (according to the degreaser 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 dislodged debris between filter pleats.

WARNING: Do not use the spa with the filter cartridges or filter standpipe removed!