In order to extend the lifespan of a constant temperature and humidity test chamber, regular maintenance and proper care are essential. During summer, common issues include over-temperature, over-pressure, and overload alarms. As seasons change, so do the types of failures. In winter, one of the most frequent problems is ice formation that blocks the water circulation system. To prevent such issues, it's important to take preventive measures in advance.
First, always use high-purity refrigerant. If the refrigerant contains too much moisture, it can lead to ice blockage, which can damage the system and reduce efficiency. Second, check the condition of the drying filter regularly. If it has aged or become ineffective, replace it immediately. An old or damaged drying filter may not absorb moisture properly, leading to ice buildup. Here’s how you can make an efficient drying filter yourself.
To create a high-efficiency drying filter, start by finding a sealed tin can. Drill a 6cm round hole at the bottom of the can, then weld a copper tube into the opening. Place about 200 grams of dry calcium chloride (or another desiccant) into a thick nylon bag. Put this inside the can, seal it tightly, and cover the two nozzles with plugs when not in use to prevent moisture from entering. When using the filter, simply remove the plug and connect the exhaust port to the compressor’s intake pipe. After use, make sure to reseal both ports to maintain its effectiveness.
Additionally, perform regular inspections and maintenance on the humidifier. Replace the water in the humidifier tank once a month to ensure clean water quality. Clean the humidifying tray at least once a month to keep the water flow unobstructed. These simple steps can significantly improve the performance and longevity of your constant temperature and humidity test chamber, especially during colder months when icing is a common issue. By taking these precautions, you can avoid costly repairs and ensure consistent, reliable operation.
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