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3. Put the O-ring on the pipe adaptor (smooth). Attach the coupling and pipe adaptor onto the outlet and
inlet and tighten it.
4. Plug the return fitting in the pool to ensure no water loss when disconnecting the hose from the return.
With some pools you will have to close the tap on the pool connector to prevent water loss.
5. Make sure the filter is turned off so no water flows out of the filter when disconnecting the return hose
form the swimming pool return and connecting it to the solar heater.