1. Special Material Valve do not work after power on: Check whether the power wiring is bad → rewire and connect the connectors; Check whether the power supply voltage is within the working range - → adjust to the normal position range; Check whether the coil is unsoldered → reweld; Coil short circuit → replace the coil.
Whether the working pressure difference is inappropriate → adjust the pressure difference → or replace the corresponding Special Material Valve; The fluid temperature is too high → replace the corresponding Special Material Valve; Impurities cause the main valve core and moving iron core of the Special Material Valve to be stuck → Clean, if the seal is damaged, replace the seal and install the filter; The liquid viscosity is too high, the frequency is too high and the life is over → Replace the product.
2. Special Material Valve cannot be closed: The seal of the main valve core or the moving iron core is damaged → Replace the seal; Whether the fluid temperature and viscosity are too high → Replace the corresponding Special Material Valve; Impurities enter the main valve core or moving iron core of the Special Material Valve → Clean; The spring life is over or deformed → Replace; The throttle hole balance hole is blocked → Clean in time; The working frequency is too high or the life is over → Change the product or update the product.
3. Other situations: Internal leakage → Check whether the seal is damaged or the spring is poorly assembled; External leakage → The connection is loose or the seal is broken → Tighten the screws or replace the seal; Noise when power is on → The fasteners on the head are loose, tighten them. The voltage fluctuation is not within the allowable range, adjust the voltage. The core suction surface has impurities or is uneven, clean or replace it in time.
