This manual provides step‑by‑step instructions for restoring BECO PFplus membrane filter cartridges, covering routine rinses, hot‑water cleaning and special…
The restoration process begins with a cold‑water rinse in the direction of flow for at least 2 minutes, followed by a hot‑water rinse (80 °C) for at least 5 minutes and a 15‑30 minute circulation at a reverse pressure of 50 kPa (0.5 bar). After hot‑water treatment, the cartridge can be left in the housing overnight and rinsed again in the morning.
When routine rinses are insufficient, special cleaning using a dilute NaOH solution (< 0.5 % NaOH, pH < 12) at 50 °C and a 0.5 % hydrogen peroxide solution is recommended. The cartridge is then neutralised with a 0.5‑1 % citric acid solution and thoroughly flushed with cold water until the pH is neutral. This manual is written in Chinese.
| Reverse pressure during rinsing | 50 kPa (0.5 bar) |
|---|---|
| Hot‑water temperature | 80 °C |
| Cold‑water rinse duration | at least 2 minutes |
| Hot‑water rinse duration | at least 5 minutes |
| NaOH cleaning solution concentration | < 0.5 % NaOH (pH < 12) |
| Hydrogen peroxide cleaning concentration | 0.5 % H₂O₂ |
| Inlet pressure for special cleaning | ≈ 100 kPa (1.0 bar) |
| Warm‑water temperature for NaOH cleaning | 50 °C |
The cartridge should be rinsed with cold water in the direction of flow for at least 2 minutes.
Hot water at 80 °C is used, and the cartridge is rinsed for at least 5 minutes.
A solution containing less than 0.5 % NaOH (pH < 12) is applied.
A reverse pressure of 50 kPa (0.5 bar) is required.