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High-pressure pump malfunctions in laboratory ultrapure water systems are a critical issue in ultrapure water system repair. This article introduces common high-pressure pump malfunctions and solutions to help resolve most problems encountered during daily use and quickly pinpoint the root cause of the problem. Previously, we discussed various high-pressure pump shutdown malfunctions; this article addresses issues where the high-pressure pump is working normally but cannot produce water.
1. High-pressure pump loses pressure.
2. Inlet solenoid valve malfunctions, preventing water intake (no pure water or wastewater) (Is it connected incorrectly?).
3. Pre-filter cartridge clogged (no pure water or wastewater, or very little wastewater).
4. Check valve malfunctions (wastewater present, no pure water).
5. Automatic flushing solenoid valve malfunctions, unable to close effectively (constantly in flushing mode).
6. Control box malfunctions, unable to close backflush solenoid valve (constantly in flushing mode).
7. RO membrane clogged.
Experience Summary from Professional Engineers at Sichuan UPU Ultrapure Technology: First, check if the product is within its warranty period. You can contact the manufacturer for repairs. If replacement is needed, you can also contact UPU engineers. Next, check if there is wastewater flowing out. If wastewater is present, replace the check valve. Then check the flushing solenoid valve. Finally, check if the RO membrane is clogged.
With the above explanation, we believe you will quickly improve your professionalism and no longer be at a loss when facing similar problems. Finally, we would like to remind you that the mechanical principles of ultrapure water systems are relatively complex. It is best to have a professional operate and repair the system to avoid unnecessary losses.
