A swimming pool actuator is an automated valve that is either connected to a swimming pool automation system or a solar heater system. These occasionally stop working and need to be replaced. There are different versions of actuators from all of the major swimming pool parts manufactures including Jandy, Pentair, Hayward, and Intermatic and all of these are universally compatible with each other.
If this actuator is connected to an automated control system, it will be connected to the circuit board. This will require you to remove the cover panel(s) of the control unit.
Remove the old connection and place the old actuator and wires to the side.
Next, Using the old connection line, install the new actuator connection to the control board.