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.

