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原文
ASCO solenoid valve failure repair method ASCO solenoid valve malfunction, there are many potential causes, so they are considered to be complex and prone to failure of the device. In fact, they are very simple, very reliable. Many of the problems is due to causes other than the valve, and other issues is due to improper application or incorrect installation. ASCO solenoid valve and pressure should check the voltage from the input to begin troubleshooting. Problem may be due to the control relay is not working or pressure fluctuations caused by the regulator. If the voltage and pressure inspection and approval, observe valve. Direct-acting solenoid valve does not work for the following reasons: a low voltage or no voltage; electromagnetic coil burn; pressure is higher than the rated pressure of the valve; valve in external impurities; valve stuck or damaged core tube. In order to maintain normal operation, when the coil is energized, the solenoid valve spool to be in contact with the core tube and plunger nut movement. Power should be able to hear a sharp metallic clicks, the voltage supplied to the coil on the nameplate must be at least 85% of the rated voltage. If the solenoid valve coil voltage is correct, but no clicks may indicate that the tube pressure is higher than the rated pressure valve, to be checked. When the four-way valve control cylinder for troubleshooting, you must follow the instructions carried by the valve. Some four-way valve control oil mist lubrication required for normal operation. The four-way pilot control valve usually requires full-size pipe, tube and used as a pressure inlet pressure outlet pipe. In some valves, joints shall be in accordance with the cylinder, speed control devices. As the cylinder failure is usually due to self-inflicted, so should check the following conditions. If the tube voltage of qualified, external impurities may prevent the spool movement in the core tube. If the spool at the top by knocking over a few million times, disc swelling or cuts, or the valve itself is damaged, also limit the movement of the spool. Pilot-operated valves in the power-even though you hear it click, it may not work. No traffic may produce the following reasons: lack of pressure drop through the valve; diaphragm ruptured or damaged piston rings; pilot hole blocked or restricted. Pilot-operated valve when power and direct-acting valve can not work may be of the following reasons: failure of the control circuit; valve in the external scale and other impurities; valve stuck or damaged core tube; spring break. Pilot-operated valve when power may fail for the following reasons: pressure relief hole plug; seat or disc damage; diaphragm or piston damage; less than the pressure drop through the valve. Solenoid valve excessive noise (buzzing sound or shock) may be due to the following causes; voltage is too low; relay failure or electronic control signal is not correct; solenoid valve parts loose; spool or plunger nut on the external surface impurities; spring is damaged; system pressure is too high. And the connection between the piston rod of the load. Lack of lubrication; piston cup for wear or leakage, the valve allows fluid discharge; system control which external impurities; system overload, low pressure pipe, hose or connector size is too small if the problem is not in the cylinder, you should check the valve.
原文来自：http://www.chinadiancifa.org

是由上海一环流体控制设备有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

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译文：

译文：
ASCO电磁阀发生故障存在许多潜在的原因，所以它们被认为是复杂且容易发生故障的装置。实际上，它们十分简单，非常可靠。许多问题是由于阀之外的原因引起的，而其他的问题则是由于应用不当或安装不正确。 ASCO电磁阀应当从检查电压和压力输入开始进行故障检修。问题可能是由于不工作的控制继电器或压力调节器波动造成的。如果电压和压力检查合格，观察阀。直动电磁阀不能工作的原因如下：电压低或没有电压；电磁线圈烧坏；压力高于阀的额定压力；阀中有外部杂质；阀芯卡住或芯管损坏。为保持正常工作，当线圈通电时，电磁阀阀芯必须在芯管内运动并接触柱塞螺母。通电时应当能听见一声尖锐的金属喀哒声，提供给线圈的电压必须至少为名牌上额定电压的 85%。如果电磁阀的线圈的电压正确，却没有喀哒声可能表示管压高于阀的额定压力，进行检查。当对四通阀控制气缸进行故障检修时，必须遵循该阀所带的说明书。有些四通阀需要油雾润滑器以便正常工作。先导控制的四通阀通常需要足尺寸的管道，用作压力进口管和压力出口管。在某些阀中，应当在气缸接头处按照、限速控制装置。由于气缸故障通常是由于自身造成的，因此应当检查是否存在下列情况。如果管压合格，外部杂质可能会阻止阀芯在芯管中运动。如果阀芯的顶部受到敲击超过数百万次，阀盘膨胀或被切伤，或者阀芯自身损坏，也会限制阀芯的运动。先导式操作阀在通电时尽管听到喀哒声，也可能不能工作。产生无流量的情况可能是以下原因造成的：通过阀的压降不足；膜片破裂或活塞环损坏；先导孔堵塞或受限制。断电时先导式操作阀和直动阀都不能工作可能是有下列原因造成的：控制电路发生故障；阀中有水垢和其他外部杂质；阀芯卡住或芯管损坏；弹簧折断。断电时先导式操作阀也可能由于下列原因而发生故障：泄压孔堵塞；阀座或阀盘损坏；膜片或活塞损坏；通过阀的压降不足。电磁阀噪音过大(嗡嗡声或震撼声)可能是由于下列原因造成的；电压过低；继电器故障或电子控制信号不正确；电磁阀零件松动；阀芯上或柱塞螺母表面有外部杂质；弹簧损坏；系统压力过高。活塞杆与连接负载之间对中。缺乏润滑；活塞皮碗磨损或泄漏，允许阀中的流体排出；系统控制其中有外部杂质；系统过载，管压过低，软管或接头的尺寸过小如果问题不是出在气缸，则应检查阀。

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