In order to extend the lifespan of a constant temperature and humidity test chamber, proper maintenance is essential. During summer, the most common issues include over-temperature, over-pressure, and overload alarms. As the seasons change, so do the types of faults. In winter, one of the most frequent problems is ice formation, which can block water flow and cause operational failures. To prevent these issues, it's important to prepare in advance with the following steps:
1. Use high-purity refrigerant. If the refrigerant contains too much moisture, it can lead to ice blockage within the system.
2. Check if the drying filter is aging. If it has degraded, replace it promptly. An old or damaged filter may not absorb moisture effectively, leading to ice buildup. Here’s how you can make an efficient drying filter: take a sealed tin can, drill a 6cm hole at the bottom, and weld a copper tube into it. Place about 200 grams of dry calcium chloride (or another desiccant) into a thick nylon bag, put it inside the can, and seal it tightly. When not in use, cover both ports with plugs to prevent moisture from entering. When using the filter, remove the plug and connect the exhaust port to the compressor intake. After use, be sure to reseal the ports.
3. Regular inspection and maintenance are crucial. The water stored in the humidifier should be replaced once a month to maintain clean water quality. Also, clean the humidifying water tray at least once a month to ensure smooth water flow and prevent clogging.
By following these simple yet effective maintenance tips, you can significantly improve the performance and longevity of your constant temperature and humidity test chamber, especially during the colder months when ice-related issues are more likely to occur. Taking proactive steps now can save time, money, and potential downtime later.
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