What is the correct long-term shutdown protection and disinfection protocol for a reverse osmosis (RO) system — and how does Chuxin Mingwei support it?

For RO systems idle for more than 72 hours, Chuxin Mingwei follows a three-phase protocol grounded in membrane manufacturer guidelines and real-world operational experience: (1) Pre-shutdown preparation — verify stable operation, record baseline parameters (feed pressure, permeate flow, conductivity), and perform full-system flush with filtered product water; (2) During shutdown — apply NSF-certified sodium bisulfite solution (for <30 days) or formaldehyde-based biocide (for >30 days), ensuring complete membrane wetting and system sealing; (3) Post-shutdown restart — conduct thorough flush (≥2 hours), inspect for biofilm or odor, validate conductivity and pressure drop, and retest permeate quality before integration into production. This protocol applies to all Chuxin Mingwei RO systems — including single-stage and dual-stage units used in bottled purified water lines (e.g., Product ID 59), barrelled water plants (ID 54, 57), and high-purity applications in electronics or pharma. Support includes remote guidance using your recorded operational data (per FAQ-008), on-site verification of preservative concentration and circulation, and optional membrane integrity testing. Note: Protection method depends on ambient temperature, water source microbiology, and shutdown duration — not all systems qualify for dry storage. For projects under service contract, Chuxin Mingwei provides written shutdown SOPs, chemical compatibility confirmation, and documentation for regulatory review. To initiate support, share your system model, last operational date, and any observed anomalies during restart — we’ll confirm next-step actions within 2 business hours.