Electromagnetic valve is not fault and screening methods

Electromagnetic valve failure will directly affect the switching valve and adjust the action of the valve, common fault electromagnetic valve is not action, screening from the following aspects: ( 1) Electromagnetic valve terminal loose or falls off thrum, electromagnetic valve shall not electricity, can tighten thread ends. ( 2) Electromagnetic valve coil burn out, can remove the wiring of electromagnetic valve, measured with a multimeter, if open circuit, electromagnetic valve coil burn out. Coil be affected with damp be affected with damp, reasons caused bad insulation and magnetic flux leakage, causing excessive current in coil and burned down, so to prevent rain water from entering the electromagnetic valve. In addition, the spring quality, reaction force is too large, the coil number of turns is too little, not enough suction also coil may be destroyed. When emergency treatment, but the manual button on the coil by normal work & other 0' A hit & other; 1' And allows the valve to open. ( 3) Solenoid valve is stuck. Electromagnetic valve slide valve door cover and the fitting clearance of valve core is small ( Less than zero. 008毫米) , are generally single assembly, when mechanical impurities into or lubricating oil is too little, it is easy to get stuck. Treatment methods available wire holes stab, from the head to make it back. The fundamental solution is to change the electromagnetic valve is to be removed, remove the valve core and valve core, clean with CCI4, flexibility allows the valve core is set inside the valve movement. Removal should be paid attention to when all parts, assembly sequence and wiring position to reassemble and wiring is correct, also check oil mist detector injection hole blockage, lubricating oil is enough. ( 4) Air leakage. Leakage will cause the air pressure is insufficient, make the force of the valve opening and closing is difficult, the reason is sealing gasket damage or slide valve wear and a few cavity gas. In dealing with the electromagnetic valve switching system failure, should choose the appropriate time, such as the electromagnetic valve in a loss of power, the if processing is not down in a switch gap, switched systems can be suspended, calmly deal with.