How do I set up a second Blue-White pump as backup?

Review the wiring schematic for setting up a backup pump. The diagram shows both the contact closure wiring necessary for triggering the backup pump when the primary pump fails, as well as the wiring layout for a 4 to 20 milliamp signal.

Connect your wires from the T3 input terminal used for dry contact in your primary pump over to the T8 output terminal of your backup pump.

If you're using a 4 to 20 milliamp signal to drive your pump's chemical output, follow the signal wiring diagram. The wiring process involves connecting your positive wire from your signal generator to the T1 terminal of your primary pump and running another wire from the same terminal to your backup pump's T1 terminal.

On the primary pump, press the menu button and select the "output setup" option. Then, select "contact closure number 1". Set a delay for how long you'd like the pump to wait until it initiates. Once this is done, exit the menu.

On the backup pump, select the "input setup" option and select "close stop pump". You can set a delay option here. Afterward, select the "output setup" and configure it to "pump run stop". Exit the menu once this is done.

Once the pumps are configured, test them by pressing the stop button on the primary pump. The backup pump in standby mode should immediately turn on when the primary pump stops.