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Changzhou Dingxin Experimental Instrument Co., Ltd
Timely resolution of faults in quartz automatic dual pure water distillers is the key to ensuring stable water quality
Date: 2025-11-24Read: 1
The quartz automatic dual pure water distiller, with its high-purity quartz material, dual condensation design, and automated control, is widely used in laboratory preparation of high-purity water (resistivity ≥ 10M Ω· cm), meeting strict water quality requirements such as trace analysis, cell culture, ICP-MS. However, in long-term operation, due to the hardness of the water source, improper operation or maintenance negligence, the equipment is prone to abnormal water production, scaling blockage or electrical failure. Mastering the causes and scientific solutions of typical problems in quartz automatic dual pure water distillers is the key to ensuring stable water quality and equipment lifespan.
1、 Significant decrease in water production or no water output
Common reasons include:
Heating tube scaling: High hardness of raw water causes the deposition of calcium carbonate on the inner wall of the quartz heating chamber, reducing thermal efficiency;
Insufficient condensate water: The flow rate of cooling water is small or the water temperature is too high, which prevents the steam from fully condensing;
Malfunction of liquid level sensor: Misjudgment of water level leads to interruption of heating.
resolvent:
Regularly use 5% dilute hydrochloric acid or specialized descaling agent to cycle and clean the heating chamber (strong acid and alkali are strictly prohibited); Ensure that the cooling water pressure is ≥ 0.1MPa and the water temperature is ＜ 25 ℃; Check whether the float or electrode type liquid level gauge is wrapped in scale, clean and reset it in a timely manner.
2、 Low water production resistivity (impure water quality)
Possible source:
Raw water pollution: The inflow contains excessive organic matter, chloride ions, or microorganisms;
Distillation process' with water ': excessive boiling causes droplets to splash into the condenser tube;
Contamination of water storage tanks or pipelines: Secondary pollution affects terminal water quality.
Countermeasure:
Pre installation of activated carbon and reverse osmosis pretreatment system; Adjust the heating power to a mild boiling state (avoid severe rolling); Regularly rinse the water storage tank and outlet pipeline with ultrapure water, and perform ozone or ultraviolet sterilization if necessary.
3、 Frequent dry burning alarm of equipment
Mostly caused by blockage of the inlet solenoid valve, insufficient raw water pressure, or liquid level control failure. Check if the incoming water pressure is ≥ 0.15MPa; Clean the inlet filter screen; Test whether the solenoid valve is open and closed normally; Confirm that the automatic water replenishment function is enabled.
4、 Quartz components rupture or turn yellow
Although quartz is resistant to high temperatures, sudden cooling, heating, or mechanical collisions can easily cause cracks; Long term exposure to fluorine-containing water sources can cause corrosion and yellowing. When operating, be sure to first pass cooling water before starting heating; Turn off the heating before stopping the machine, and then stop the cooling water; It is strictly prohibited to use fluorine-containing water sources (such as certain groundwater).