How to eliminate electromagnetic pneumatic valve failure

a solenoid pneumatic valve solenoid pneumatic valve does not work after the power supply
check the power supply wiring whether bad - > new connectors and wiring connection
check whether the power supply voltage is in range - plus or minus work And adjusted to normal position range
whether coil desoldering >
the coil short circuit welding again > replacement coil work pressure difference is not appropriate to adjust the differential, or change of proportion of electricity
fluid temperature is too high to replace solenoid pneumatic valve commensurate
have impurities to make Lord of pneumatic valve pneumatic valve core and the moving core card dead - cleaning, such as a seal damage should be replaced seal and install filters
liquid viscosity is too large, the frequency is too high and the life have to change
- > 2, solenoid pneumatic valve cannot be closed
the main pneumatic valve core or moving iron core of the seal is damaged, replace the seal
fluid temperature, viscosity is too high to replace counterpart solenoid pneumatic valve
there are impurities into the solenoid pneumatic valve pneumatic valve core production or moving iron core - >
spring cleaning life has to balance or deformation - > change
orifice hole blockage and timely cleaning
working frequency is too high or life and have to re-election or update the products
3, other
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 seal
strong electricity from time to tome noise - > leader a loose, tighten. Voltage fluctuation is not allowed within the scope of adjust voltage. Core surface impurities or uneven absorption, timely cleaning.