4WE系列电磁换向阀厂家-规格全

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 双稳态电磁阀不换向和电磁阀内漏的检测方法

  

  步骤一  用220V电源加到电磁阀上的两个插片上，反复通断电流数次，如电磁阀有换向声则证明电磁阀电气上无故障（注意：因线圈内带有PTC热敏电阻故通电时间不能超过20秒，超时后可能会导致线圈内PTC热敏电阻发生过热保护，此时只需将电源断开一段时间让PTC热敏电阻降温后就会自动恢复）。但如电磁阀发出持续的颤音或持续一秒以上的杂音就说明有噪音故障。

  

  步骤二  在电磁阀上电源去除后的状态下用上图所示制作的工装接通220V电流加到电磁阀上的两个插片上后再将电源断开，然后将制冷系统通上电源待工作一段时间后，此时系统内应该只有一个温室是在制冷状态，然后查看被关闭的温室温度有无下降，如有下降就说明电磁阀有内漏故障反之就无故障。检查完一个温室后将电磁阀用上图所示制作的工装外接电源接通220V电流加到电磁阀上的两个插片上，按下带常闭触头的冰箱门开关后在不松开的情况下将电源断开，此时电磁阀已换向，待系统工作一段时间后查看被关闭的温室温度有无下降，如有下降就说明电磁阀有内漏故障反之就无故障。

  

  步骤三  在电磁阀上电源去除后的状态下将制冷系统通上电源，然后将电磁阀整个完全浸泡在水中，此时查看电磁阀各焊接部位有无气泡冒出，如有气泡冒出则证明电磁阀有外漏故障反之就无故障。