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1. If air leakage increases or equipment does not operate properly, stop operation. After mounting is completed, confirm that it has been done correctly by performing a suitable function test. 2. Do not apply external force to the coil section. When tightening is performed, apply a wrench or other tool to the outside of the piping connection parts. 3. Mount a valve with its coil position upwards, not downwards. When mounting a valve with its coil positioned downwards, foreign objects in the fluid will adhere to the iron core leading to a malfunction. Especially for strict leakage control, such as with vacuum applications and non-leak specifications, the coil must be positioned upwards. 4. Do not warm the coil assembly with a heat insulator, etc. Use tape, heaters, etc., for freeze prevention on the piping and body only. They can cause the coil to burn out. 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. Warning Winding direction Pipe tape Expose approx. 2 threads Warning 8. Low temperature operation 1. The valve can be used in an ambient temperature of between .10 to .20°C. However, take measures to prevent freezing or solidification of impurities, etc. 2. When using valves for water application in cold climates, take appropriate countermeasures to prevent the water from freezing in tubing after cutting the water supply from the pump, by draining the water, etc. When warming by a heater, etc., be careful not to expose the coil portion to a heater. Installation of a dryer, heat retaining of the body is recommended to prevent a freezing condition in which the dew point temperature is high and the ambient temperature is low, and the high flow runs. Selection Mounting Piping Piping Connection thread Rc 1/8 Rc 1/4 Rc 3/8 Rc 1/2 7 to 9 12 to 14 22 to 24 28 to 30 Proper tightening torque (N・m) Tightening Torque for Piping 2 Port Solenoid Valves for Fluid Control Precautions 2 Be sure to read this before handling. For detailed precautions on each series, refer to the main text. 3. 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. 4. Avoid connecting ground lines to piping, as this may cause electric corrosion of the system. 5. Tighten threads with the proper tightening torque. When attaching fittings to valves, tighten with the proper tightening torque shown below. Caution 1. Refer to the Fittings and Tubing Precautions (pages 44 to 47) for handling One-touch fittings. 2. 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. Install piping so that it does not apply pulling, pressing, bending or other forces on the valve body. 6. Connection of piping to products When connecting piping to a product, refer to its operation manual to avoid mistakes regarding the supply port, etc. 7. Steam generated in a boiler contains a large amount of drainage. Be sure to operate it with a drain trap installed. 8. In applications such as vacuum and non-leak specifications, use caution specifically against the contamination of foreign matter or airtightness of the fittings. 1. Do not use in an atmosphere having corrosive gases, chemicals, sea water, water, water steam, or where there is direct contact with any of these. 2. Do not use in explosive atmospheres. 3. Do not use in locations subject to vibration or impact. 4. Do not use in locations where radiated heat will be received from nearby heat sources. 5. Employ suitable protective measures in locations where there is contact with water droplets, oil or welding spatter, etc. Operating Environment Warning Caution 55