1. Water quality check

We record the actual problem before choosing or evaluating treatment.

2. Pressure and flow check

We verify that the system does not cause excessive pressure drop.

3. Consumables check

We check cartridges, carbon, resins, and membranes.

4. Leakage check

We check O-rings, connections, valves, and bypasses.

5. Maintenance log

We note filter changes, measurements, and dates so we know when performance begins to decline.