VX21 VX22 VX23 0.5 0.7 Proper Tightening Torque (N・m) Metal body ( Aluminum C37 Resin body Stainless steel) Mounting screw Coil assembly O-ring A O-ring B Adapter Push rod assembly Spring O-ring C Mounting screw Coil assembly Seal Return spring Armature assembly Body Bracket 4 3 2 No gaps 1 Mounting Disassembly/Assembly Procedures Warning Caution 5. Secure with brackets, except in the case of steel piping and copper fittings. 6. Avoid sources of vibration, or adjust the arm from the body to the minimum length so that resonance will not occur. 7. Painting and coating Warnings or specifications printed or labeled on the product should not be erased, removed or covered up. Caution 1. Before starting the disassembly work, be sure to shut off the power supply and pressure supply, and then release the residual pressure. 1) Loosen the mounting screws. The coil assembly, seal, return spring, armature assembly and body can be removed. 1) Loosen the mounting screws. The coil assembly, push rod assembly, O-rings, adapter and body can be removed. Disassembly 1) Mount the components on the body in the reverse order of disassembly. 2) When changing the electrical entry direction, turn the coil assembly in a desired direction to mount it. 3) Push the coil assembly against the body and tighten the screws two or more rounds diagonally (Fig. 2) in the status that there are no gaps between the coil assembly and body (Fig. 1). Tighten the screws in the order of “12341234”. . After tightening the screws, make sure that there are no gaps between the coil and body (Fig. 1). . After the disassembly and assembly have been completed, make sure that no leak occurs from the seal. Additionally, when restarting the valve, make sure that the valve operates correctly after checking the safety. Assembly Fig.1 Fig.2 Disassembly/Assembly Procedures Series VX21/22/23 Specific Product Precautions 3 Be sure to read before handling. Refer to back cover for Safety Instructions. For 2 Port Solenoid Valves for Fluid Control Precautions, refer to “Handling Precautions for SMC Products” and the Operation Manual on SMC website, http://www.smcworld.com 45
