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Winter temperatures are low, which can easily cause problems for laboratory water purifiers, such as pipe freezing, reduced filter efficiency, and pump malfunctions, affecting water quality and shortening equipment lifespan. To ensure safe and stable operation, the following usage and maintenance precautions are recommended:
1. Ensure Suitable Ambient Temperature
① The laboratory temperature should be maintained above 5℃. If the equipment is near a window or vent, install windbreaks to prevent direct cold airflow.
② Do not turn on the machine directly in low-temperature environments. It is recommended to preheat the machine by turning on the heater or air conditioner 30 minutes in advance.
2. Inspect Pipes and Water Source
① Carefully inspect the inlet and outlet pipes and all connections to ensure there is no damage or leakage.
② Wrap exposed pipes with insulation to prevent freezing and cracking.
③ Check that the tap water supply is unobstructed. If the water supply pipes are found to be frozen, use 30-40℃ warm water to slowly thaw them. Do not use boiling water directly. Ensure water flow is unobstructed before starting the equipment.
3. Pretreatment Filter Cartridge Flushing
If the equipment has not been used for a long time, flush the pretreatment filter cartridges (such as PP cotton, activated carbon, etc.) before starting to remove accumulated cold water and impurities, preventing the filter cartridges from cracking due to low temperatures.
1. Gradual Start-up of the Equipment
After starting the equipment, first set it to "flushing mode" and run it for 5-10 minutes to gradually warm up the pipes and core components (such as the RO membrane and booster pump). Then switch to normal water production mode to avoid damage caused by low-temperature shock.
2. Real-time Monitoring of Key Parameters
① Observe key indicators such as water flow rate, resistivity, or conductivity.
② In winter, lower water temperatures will cause a decrease in RO membrane water production (approximately 3%-5% decrease in production for every 1℃ decrease), which is normal and does not require forcibly increasing the pressure.
③ If the values fluctuate abnormally, stop the machine and check if the filter element is clogged or if the pipeline is leaking.
3. Regularly drain water to prevent water accumulation and freezing.
Check the wastewater discharge outlet every 2 hours to ensure smooth drainage and prevent water from freezing in the pipeline. If drainage slows down, unclog the pipeline or replace the wastewater ratio solenoid valve promptly.
1. Short-term shutdown (end of each day)
① Turn off the power and inlet valve.
② Open the outlet faucet to drain residual water from the pipeline, reducing the risk of freezing.
③ Maintain the laboratory temperature and avoid sudden temperature drops at night.
2. Long-term shutdown (e.g., holidays)
① Thoroughly drain all water from the equipment, including the RO membrane housing, storage tank, and pipeline.
② Turn off the main inlet valve and power.
③ Remove the filter element and seal it for safekeeping to prevent moisture and deterioration.
④ Cover the equipment with a dust cover for moisture and dust protection. IV. Emergency Handling: Quick Response to Common Problems
1. Pipeline Freezing
Immediately stop the machine and disconnect the power. Slowly apply 30–40℃ warm water along the pipeline to thaw it. After thawing, check for leaks. Only restart the machine after confirming there are no abnormalities.
2. Equipment Alarm Handling
① "Water Shortage Alarm": Check if the water source is frozen or if the water pressure is normal.
② "High Pressure Alarm": This may be due to pipeline blockage or a pressure valve malfunction. Stop the machine and troubleshoot. Do not attempt to restart it.
3. Damaged Filter Cartridge
If a broken or leaking filter cartridge is found, immediately shut down the equipment, replace it with the same model filter cartridge, and flush the pipeline before putting it back into use.
