What to do if RO membrane permeate flow doesn’t recover after chemical cleaning on a Chuxin Mingwei bottled purified water filling line?

If permeate flow fails to recover after chemical cleaning of RO membranes on your Chuxin Mingwei fully automatic bottled purified water filling line, first verify that the cleaning protocol matched the fouling type (e.g., organic, colloidal, or scaling) and that cleaning parameters—temperature, pH, contact time, and flow velocity—were strictly followed per the system's operation manual. Next, inspect for physical damage (e.g., delamination, O-ring failure, or feed channel blockage), as these cannot be resolved by cleaning alone. Confirm pre-treatment integrity: multi-media filtration, activated carbon, and antiscalant dosing must remain effective—any bypass or exhaustion compromises membrane life. Crucially, Chuxin Mingwei's dual-stage RO systems are engineered for long-term stability; persistent low flux often signals irreversible fouling or aging beyond design life (typically 3–5 years under proper operation). Our after-sales support includes on-site diagnostic visits, membrane autopsy analysis, and replacement with OEM-spec membranes—subject to service contract terms and prior validation of feed water quality logs. Do not reinstall cleaned membranes without performance validation via standardized flux and salt rejection tests. Contact our technical support team with your system ID, recent CIP records, and permeate conductivity/flow data for prioritized troubleshooting.
Note that permeate flow recovery must be evaluated against the full system's water balance—not just the bottling line's nominal output rate—since actual purified water demand includes bottle rinsing, CIP water consumption, equipment flushes, formulation losses, peak-load buffering, and planned downtime. As clarified in FAQ-CAP-01, accurate assessment requires per-shift finished product volume calculation, process water requirements and safety margins, and verification of raw water and finished water tank capacity to absorb short-term fluctuations—all validated via project-level material balance.