Solenoid valve installation common problems:
1, first check whether the solenoid valve is consistent with the main parameters of the model selection, such as power supply voltage, material working pressure, pressure difference, especially the switching power supply, if wrong, it will burn the solenoid coil. The power supply voltage should consider the range of rated current operating voltage fluctuation: communication AC 10%~-15%, DC 10%~-10%, ordinary solenoid parts are not suitable for disassembly.
2, the general solenoid valve magnet coil components should be perpendicular to the upward, perpendicular to the installation of the pipeline at the level of the road, if the indoor space limit or working conditions must be installed by the side, need to be clearly proposed when the model selection order. Otherwise, it will cause the solenoid valve to not work properly.
3. Before docking, the pipeline should be cleaned, and the metal powder and rubber seal residue in the pipeline, rust and scale should be eliminated. Pay attention to the cleanliness level of the material, if the material is stained with dust, residue and other obstacles to the normal operation of the solenoid valve, the pipeline needs to install a filter device or filter.
4, if the material will play the phenomenon of water hammer, then should be used with moisture-proof hammer function of the solenoid valve or take effective preventive measures.
5, the solenoid valve should be added before and after the manual emergency cut-off valve, in addition, it should be bypass, which is conducive to the maintenance of the solenoid valve in the common fault.
6, the solenoid valve is generally fixed, can not be inverted, generally placed on the valve body to emphasize the material flow orientation, installation should be installed in accordance with the orientation indicated by →. However, in the vacuum solenoid valve road or special circumstances can be reversed.
7. The channel side of the steam solenoid valve should be equipped with a steam trap, and the point of the proportional solenoid valve should be skewed.
8, as far as possible do not have to let the solenoid valve in the long-term power supply situation, so it is very easy to reduce the electromagnetic coil use period and even burn the electromagnetic coil, that is, open and close, normally closed solenoid valve can not be exchanged.
Common problems and removal of solenoid valves:
1, the solenoid valve can not be turned off: the hydraulic seal of the main valve core or the iron core is damaged → replace the hydraulic seal; Fluid mechanics temperature, viscosity is not too high → replace the professional solenoid valve; There is residue into the solenoid valve main valve core or transformer core → clean up; Elastic yellow service life has reached or deformation → disassembly; Choke hole equalization hole blockage → Clean up immediately; The output power is too high or the service life has reached → Replace the product or upgrade the product.
2. The solenoid valve is not working after being connected to the power supply: check whether the wiring of the switching power supply is not good → wiring and connector connection again; Check whether the power supply voltage is in the working range -→ adjust to the range of all normal parts; Check whether the electromagnetic coil is in bad contact → welding again; Solenoid short circuit fault → disassemble solenoid coil; The pressure difference in the work is not suitable for → adjusting the pressure difference → or replacing the equivalent solenoid valve; The fluid mechanics temperature is too high → replace the equivalent solenoid valve; Residue makes the main valve core of the solenoid valve and the iron core of the transformer stuck → carry out cleaning. If the seal is damaged, the seal should be replaced and the filter device should be installed; The liquid viscosity is very large, the frequency is too high and the service life has to → disassemble the commodity.
3, other conditions: internal leakage → check whether the hydraulic seal is damaged, whether the elastic yellow installation is poor; External leakage → loose connection or hydraulic seal is broken → tighten screw or remove hydraulic seal; There is noise when connecting the power supply → the top fastener is loose and tightened. Operating voltage fluctuation is not allowed within the scope, adjust the operating voltage. Transformer core suction surface residue or uneven, immediately clean or displace.