Many imported and domestically produced box-type coating machines that have been in service for 5–10 years still possess sound core hardware but lack water vapor capture systems. As market demands for coating quality rise, these older machines struggle to produce high-end products; while replacing the entire unit entails massive investment, retrofitting a water vapor capture pump offers a cost-effective upgrade path. However, retrofitting is not merely a matter of cutting holes and connecting pipes; there are significant technical pitfalls. First, improper placement of chamber openings and cold trap coil layouts can severely compromise water vapor capture efficiency. Second, high baking temperatures generate thermal radiation that increases the load on the cold trap, preventing it from reaching the required low temperatures. Third, inadequate integration of electrical signals and logic for alarms and defrosting interlocks creates a risk of accidental shutdowns. Fourth, poor refrigerant piping layout can lead to liquid backflow and reduced heat exchange efficiency. A thorough operational assessment—covering chamber volume, diffusion pump configuration, standard baking temperatures, workpiece types, and batch cycle times—must precede the retrofit to determine the correct cold trap specifications, coil design, and installation location, rather than simply applying a standard model based on the host machine's type. Guangzhou Xieyi Automation possesses extensive experience in retrofitting legacy coating machines; its WVCP series supports custom coil dimensions and flange interfaces, ensuring compatibility with equipment from manufacturers such as Optorun, Shincron, and Satisloh, as well as various domestic brands. Engineers conduct on-site assessments to develop retrofit plans and handle mechanical installation, electrical integration, and system commissioning, ensuring compatibility with existing process systems without compromising the original equipment's structural integrity. The completed retrofit not only improves coating yields but also reduces vacuum pump-down times and boosts overall equipment productivity. When upgrading older machines, enterprises should avoid focusing solely on the equipment's unit price; instead, they must consider on-site assessment, installation, commissioning, and after-sales maintenance to ensure the equipment delivers the expected process results.
Post time: 2026-09-19 14:51:54