机械控制电路实现水位检测、电机驱动、进水、排水等功能，主要由水位检测器、电动机、传动系统部件、进水排水电磁阀组成。
Machine control circuit realizes the functions of water level detect, motor driven, water import and export, it consists of water level detector, motor, transmission system components and penstocks.
对于KFR型空调器，若制冷正常，而不制热，其故障主要发生在四通电磁阀或其控制电路。
For KFR type air-conditioner, if refrigeration normal, not heating, its fault mainly in four electromagnetic valve or its control circuit.
双电磁系统控制电路确保两台并联接触器的同步闭合和无声节电运行。
Its control circuit with double electromagnetic system can ensure synchronous closing, silent and energy saving operation of two contactors in parallel.
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