The official website’s product information recommends aligning the inlet and outlet of the proportional pump with the water flow direction in the main pipeline and ensuring that the connections are sealed. Install and secure the proportional pump in the direction specified on the page. The information also notes that a filtration device should be installed at the pump inlet and that, at startup, internal air may be discharged as instructed. After use, rinse with clean water. Installation conditions and applicable parameters vary by model and should be confirmed against the documentation for the corresponding product and the actual requirements.