SMC電磁閥故障有：閥不能換向或換向動(dòng)作緩慢，氣體泄漏，電磁先導(dǎo)閥有故障等。
1：SMC電磁閥時(shí)間使用后易出現(xiàn)閥芯密封圈磨損、閥桿和閥座損傷的現(xiàn)象，封閉不嚴(yán)，活動(dòng)鐵芯被卡死，電路有故障等，此時(shí)，應(yīng)更換密封圈、閥桿和閥座，或?qū)Q向閥換。2：若SMC電磁閥先導(dǎo)閥的進(jìn)、排氣孔被油泥等雜物堵塞，導(dǎo)致閥內(nèi)氣體泄漏，閥的動(dòng)作緩慢或不能正常換向等故障。均可導(dǎo)致?lián)Q向閥不能正常換向。3：SMC電磁閥不能換向或換向動(dòng)作緩慢，般是因潤(rùn)滑不良、彈簧被卡住或損壞、油污或雜質(zhì)卡住滑動(dòng)部分等原因引起的。對(duì)此，應(yīng)先檢查油霧器的工作是否正常；潤(rùn)滑油的粘度是否合適。必要時(shí)，應(yīng)更換潤(rùn)滑油，清洗換向閥的滑動(dòng)部分，或更換彈簧和換向閥。對(duì)前3種情況應(yīng)清洗先導(dǎo)閥及活動(dòng)鐵芯的油泥和雜質(zhì)。而電路故障般又分為控制電路故障和電磁線(xiàn)圈故障兩類(lèi)。檢查時(shí)，可用儀表測(cè)量電磁線(xiàn)圈的電壓，看是否達(dá)到了額定電壓，如果電壓過(guò)，應(yīng)進(jìn)步檢查控制電路中的電源和相關(guān)聯(lián)的行程開(kāi)關(guān)電路。如果阻值太或太，說(shuō)明電磁線(xiàn)圈已損壞，應(yīng)更換。如果在額定電壓下?lián)Q向閥不能正常換向，則應(yīng)檢查電磁線(xiàn)圈的接頭（插頭）是否松動(dòng)或接觸不實(shí)。方法是，拔下插頭，測(cè)量線(xiàn)圈的阻值，在檢查電路故障前，應(yīng)先將換向閥的手動(dòng)旋鈕轉(zhuǎn)動(dòng)幾下，看換向閥在額定的氣壓下是否能正常換向，若能正常換向，則是電路有故障。www.san17.com
SMC solenoid valve failure are: the valve can not change or change to the slow, gas leak, solenoid pilot valve is faulty and so on.
1: SMC solenoid valve after prolonged use valve seals prone to wear, stem and seat damage phenomenon, strict closure, core activities to be stuck, circuit failure, etc., then, should replace the seals , stem and seat, or valve replaced. 2: If the SMC solenoid pilot valve inlet and exhaust vent was blocked sludge and other debris, resulting in gas leakage within the valve, the valve moves slowly or does not change to other faults. Can lead to the valve does not change. 3: SMC solenoid valve can not change or change to the slow, usually due to poor lubrication, the spring is stuck or damaged, oil or some other impurities stuck sliding causes. In this regard, you should check the oil mist device is working properly; oil viscosity is appropriate. If necessary, replace the oil, clean the valve sliding parts, or replace the spring and valve. The former three kinds of situations and activities of the pilot valve should be cleaned of sludge and impurities on the core. The circuit fault is generally divided into control solenoid circuit fault and fault types. Inspection, available instruments measure electromagnetic coil voltage, see if reach the rated voltage, if the voltage is too low, should be further examination of the power control circuit and associated limit switch circuit. If the resistance is too large or too small, indicating that the electromagnetic coil is damaged should be replaced. If the rated voltage does not change the valve, you should check the solenoid connector （plug） is loose or contact is not true. Method is to unplug the plug, measure the coil resistance, fault checking circuit before the first valve manual knob should be turned several times, looking at the rated pressure valve is working correctly for commutation, if normal commutation, it is a circuit failure. www.san17.com