Solar Pump and Panel Instructions.The OFF position will allow the pump to run as long as the solar panel has direct sunlight. This also allows for the battery pack in the solar panel to be recharged via solar energy.In times when your solar panel does not have direct sunlight, you can simply push button to ON. If fully charged, the batteries will power the fountain for up to 4 hours.If the button is left ON in direct sunlight the sunlight WILL power the pump AND recharge the battery, this will allow the fountain to run even if a cloud blocks the sun. NOTE: If fountain runs while charging it may never reach full charge.