The highest range of working pressure 最高工作压力范围 Safety proof pressure 安全耐压 145PSI(1MPa)~400PSI(2.75MPa) 600PSI(4.1MPa) >400PSI(2.75MPa) 800PSI(5.5MPa) C H Manual Reset 手动型 YK Series Manual Reset Pressure Controls YK系列手动复位压力控制器 Product Specifications 产品特点 ◆ Adopt Eng. thread quick connector (copper flare connection) or brass tube (incl. capillary) welding connecting structure, easy to mount for different needs. ◆ Board-assembly (with mounting ears) or wire-assembly (no need for separate fixing) can be chosen for outer shell assembly. ◆ The air-tight bi-security disc and stainless steel sensor ensure that the switch opens instantly automatically under the pressure and cuts off the connection between the switch contact and the pressure inside the system. The system will not be able to start up the machine by accidentally actuating the pressure switch, which is safe and reliable enough to prevent the machine from damaging. ◆ The independent structure design of auto switching off and manual resetting enhances the maximum security and stability for the pressure protection. ◆ 采用英制管螺纹快速接头或铜管(含毛细管)焊接式连接结构，安装方便，可满足不同的需要。 ◆ 外壳采用板装式（自带安装耳）或线装式（无需另外固定）两种安装方式，可供用户任意选择。 ◆ 密封式双保险碟片不锈钢感应器，确保在压力作用下自动快速断开开关接头，并切断开关接头与系统内压力的联 系，确保系统不因意外接通开关启动机器而导致机器损坏，特别安全可靠。 ◆ 独立的自动断开和手动复位双结构设计，极大地提高了压力保护的安全性和可靠性。 Operating Principle 工作原理 ◆ When pressure inside the system is higher than rated safe pressure, the sense disc starts to function instantly, resulting in pushing the security disc to the lock position by the rod and cutting off the switch by security disc through connecting rod at the same time. When the pressure reduces, the sense disc resets automatically while the security disc can’t reset because it is at the lock position, hence the switch can’t cut in. The system will reset to normal status only when pressing the outside button to push the security disc forcibly to unlock in order to cut in the switch. ◆ 当系统内压力高于额定的安全压力时，感应器内压力感应碟片瞬时发生动作，通过推杆推动保险碟片达到锁定位置，同时经保险碟片通过连接导杆推动开关断 开。当压力降低时，感应碟片自动复位，因保险碟片已处于锁定位置而不能自动复位，开关不能接通。只有当按动外部按钮，强制推动保险碟片解除锁定达到开关接 头接通状态时，系统才能恢复正常工作状态。 Typical Outline Drawing 典型外形图 Typical Structure Drawing 典型结构图 Typical Connector Drawing 典型接口图 Designed Parameter 设计参数 ◆ Working pressure range: 145~800PSI (1~5.5MPa) ◆ Burst Pressure: 5000PSI ◆ Ambient temperature: -30℃~+80℃ ◆ System medium temperature: -50℃~+120℃ ◆ Electrical Rating: At 24Vac, normal electric capacity: 125VA At 120/240Vac, normal electric capacity: 375VA ◆ Dielectric Strength: Between disconnected contacts: AC700V/S Terminal to outer shell: AC2000V/S ◆ Safety proof pressure: The pressure that the control can endure while not affects the rated motion value ◆ 工作压力范围：145～800PSI (1～5.5MPa) ◆ 爆破压力：5000PSI ◆ 环境温度：-30℃～+80℃ ◆ 系统介质温度：-50℃～+120℃ ◆ 电气规格：24Vac时常规电气容量125VA 120/240Vac时常规电气容量375VA ◆ 抗电强度：断开触点间为AC700V/S，端子对外壳为AC2000V/S ◆ 安全耐压：压力控制器可承受的不影响动作设定值的压力。 Application 用途 ◆ The series of switches are used to all air conditioning and refrigeration systems that require special pressure protection and broad range of extra-high pressure protection for the pressure systems of variety of tools and equipments. They can be directly installed on the pipeline or on the control panel based on the equipments situation. ◆ 该系列压力开关适用于对压力保护有特殊要求的各类空调制冷系统及各种设备、工具压力系统超压保护作用的广泛场合。该压力开关可直接安装在管路上，或根 据设备要求安装于设备面板上。 Electric Theory Drawing 电气原理图 5 4
RkJQdWJsaXNoZXIy NzAwNg==