Electromagnetic valve troubleshooting of explosion-proof solenoid valve does not work after the power supply

Electromagnetic valve troubleshooting explosion-proof solenoid valve does not work after the power supply of the explosion-proof solenoid valve of DCF model failure problem this site electromagnetic valve failure diagram and check the power supply wiring whether bad back connectors and wiring connection; Check whether the power supply voltage is the plus or minus the scope of work - adjusted to normal position range; Whether coil desoldering and welding; Coil circuit to replace the coil; Working pressure difference is not appropriate to adjust the differential, or change of proportion of electromagnetic valve; Fluid temperature is too high and change of proportion of electromagnetic valve; Have impurities to make electromagnetic valve of the main valve core and the moving core card dead - cleaning, such as sealing damaged seal and install the filter should be changed; Liquid viscosity is too large, the frequency is too high and life and have to replace product; Explosion-proof solenoid valve can not close; The main valve core or moving iron core of seal is damaged, replace the seal; Fluid temperature, viscosity is too high to replace of the electromagnetic valve; Are valve core production impurities into the solenoid valve or moving iron core and cleaning; Spring had come to life or deformation and replacement; Orifice balance hole blockage and timely cleaning; Working frequency is too high, or life and have to re-election or update the products; Explosion-proof solenoid valves other situations; Internal leakage to check whether the seal is damaged, the spring is bad assembly; External leakage to joint looseness or seal has been bad, screw or replace the seal; Electricity from time to tome noise and strong leader a loose screw. Voltage fluctuation is not allowed within the scope of adjust voltage. Core surface impurities or uneven absorption, clean or replace in a timely manner. Solenoid valve factory was established in July, the site of factory mutual dadukou district industrial park is located in the city.