Cm352 Corrosion Inhibitor Today

| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | High iron counts despite adequate dosage | Biofilm under-deposit corrosion | Conduct a biocide shock (non-oxidizing) and then re-passivate with CM352. | | Copper pitting | Low azole concentration | Test tolyltriazole levels; supplement with a dedicated copper inhibitor if below 10 ppm. | | White rust on aluminum | pH > 9.5 | Reduce alkalinity via acid feed (sulfuric or CO2). | | Foaming in cooling tower | Overdose >2000 ppm | Reduce feed rate; add a low-silicone antifoam. |

: Hartzell recommends re-applying CM352 at regularly scheduled maintenance intervals, typically aligned with the lubrication schedule found in the Propeller Owner’s Manuals Application Instructions For detailed procedures, technicians should refer to Hartzell Service Letter HC-SL-61-364 Standard Practices Manual 202A Preparation cm352 corrosion inhibitor