This manual provides step‑by‑step instructions for restoring BECO MEMBRAN PS Beer filter cartridges using cold, hot, and special cleaning procedures.
The restoration process begins with a regular cold‑water rinse of at least 2 minutes at the filter’s flow direction, followed by a hot‑water rinse at 80 °C for at least 5 minutes while maintaining a reverse pressure of 0.5 bar. After rinsing, the cartridge should be left in hot water overnight for optimal recovery.
If the pressure differential exceeds 0.5 bar and regular rinses are insufficient, a special cleaning sequence using alkaline (NaOH) and acidic solutions is required. The procedure includes controlled temperature, concentration, and pH steps, followed by thorough rinses until no residual chemicals remain. Safety notes advise using Eaton‑recommended water and contacting Eaton technical support for assistance. This manual is written in Chinese.
| Maximum pressure differential for regular rinse | < 0.5 bar |
|---|---|
| Reverse pressure during rinses | 0.5 bar (50 kPa) |
| Hot water rinse temperature | 80 °C |
| Alkaline cleaning solution concentration | 1‑2% NaOH, pH 13, 55 °C |
| Acid cleaning solution concentration | 0.5% phosphoric acid, pH 3.2, 55 °C |
| Circulation cleaning pressure | ≈ 100 kPa (1.0 bar) |
The cold‑water rinse should be performed for at least 2 minutes in the direction of filtration.
The hot‑water rinse should be done with water at 80 °C.
Special cleaning is required when the pressure differential exceeds 0.5 bar and regular cold‑ and hot‑water rinses do not fully restore the cartridge.
First rinse with cold water, then warm water (50 °C), followed by a 1‑2% NaOH solution at pH 13 and 55 °C for 20 minutes, and finally rinse until no alkaline residue remains.