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Why are the large control knobs (diverters) difficult to turn?

April 26, 2017CONTROL difficult diverters knobs large turn

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Why are the large control knobs (diverters) difficult to turn?

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The diverter valves will be difficult to turn when the pump is on. These valves could be adjusted when the pump is off. If the valve is difficult to adjust even when the pump is off, there is probably debris in the control. The sand or grit can be removed by first turning off the spa, removing the handle and unscrewing the cap. Remove the diverter assembly and clean. Reverse the steps to re-assemble.