Disassembly/Assembly Procedures Caution Piping Warning Caution 1. During use, deterioration of the tube or damage to the fittings could cause tubes to come loose from their fittings and thrash about. To prevent uncontrolled tube movement, install protective covers or fasten tubes securely in place. 2. For piping the tube, fix the product securely using the mounting holes so that the product is not in the air. 1. Preparation before piping Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove chips, cutting oil and other debris from inside the pipe. Avoid pulling, compressing, or bending the valve body when piping. 2. Avoid connecting ground lines to piping, as this may cause electric corrosion of the system. 3. Always tighten threads with the proper tightening torque. When using steel piping, tighten with the proper tightening torque shown below. Lower tightening torque will lead into fluid leakage. 4. Connection of piping to products When connecting piping to a product, avoid mistakes regarding the supply port etc. 5. Wrapping of pipe tape When connecting pipes, fittings, etc., be sure that chips from the pipe threads and sealing material do not enter the valve. Furthermore, when pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads. 6. In applications such as vacuum and non-leak specifications, use caution specifically against the contamination of foreign objects or airtightness of the fittings. Tightening Torque for Piping Thread size Rc1/8 Rc1/4 Rc3/8 Rc1/2 7 to 9 12 to 14 22 to 24 28 to 30 Proper tightening torque (N・m) Individual SUP for medium vacuum Common SUP for air Manifold Exploded View IN port (Common SUP) OUT port (Individual SUP) IN port Gasket IN port Solenoid valve for manifold Gasket Mounting screw OUT port (Common SUP) IN port (Individual SUP) Individual port side Individual port side . Mounting orientation exists when mounting valves onto manifold base. Mount it as shown above. . Take great care when special electrical entry direction (XC) is used. Individual port Solenoid valve interface for manifold Manifold base Series VX21/22/23 Specific Product Precautions 4 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 Winding direction Pipe tape Expose approx. 2 threads 46