1. Do not disassemble, modify (including circuit board replacement) or repair this product. Such actions are likely to cause injuries or breakage. 2. Perform periodic inspection. Confirm that wiring or screws are not loose. Otherwise, unpredicted malfunction in the system composition devices is likely to occur. 3. When an inspection is performed. . Turn off the power supply. . Stop the supplied fluid and discharge the fluid in the piping and confirm the release to the atmosphere before performing an inspection. It is likely to cause injuiries. Warning 1. Do not wipe this product with chemicals such as benzine or thinner. Using such chemicals is likely to cause damage. Caution Maintenance Adjustment and Operation Serial Wiring EX510 Precautions 1. Do not short-circuit a load. If a load is short-circuited, excessive can cause damage to the connected devices. The fuse of the input unit will melt and below. The output and SI unit will activate its overcurrent protection function. However, they cannot cover all modes, so damage is likely to occur. 2. Do not manipulate or perform settings with wet hands. Performing such activity will likely cause an electrical shock. Warning 1. DIP switches and rotary switches should be set with a small watchmaker’s screwdriver. Caution Operating Environment 1. Do not use this product in the presence of dust, particles, water, chemicals, and oil. Use with such materials is likely to cause a malfunction or breakage. 2. Do not use this product in the presence of a magnetic field. Use in such an environment is likely to cause a malfunction. 3. Do not use this product in an atmosphere containing an inflammable gas, explosive gas, or corrosive gas. Use in such an atmosphere is likely to cause a fire, explosion, or corrosion. This reduced-wiring system is not explosion-proof. 4. Do not use this product in places where there are cyclic temperature changes. In case that the cyclic temperature is beyond normal temperature changes, the internal unit is likely to be adversely effected. 5. Do not use this product in places where there is radiated heat around it. Such a place is likely to cause a malfunction or breakage. 6. Do not use this product near sources that generate a surge which exceeds the benchmark test, even though this product is CEmarked certified. The internal circuit components are likely to deteriorate or become damaged when there are equipment (solenoid type lifter, high frequency guided furnace, motor, etc.) which generate a large surge around the reduced wiring system. Take measures to prevent an electrical surge and avoid having the wires touch each other. 7. Use the product type that has an integrated surge absorption element when directly driving a load which generates surge voltage by relay or solenoid valves. 8. The reduced wiring system should be installed in places with no vibration or shock. If installed in a place with vibration or shock, a malfunction or breakage is likely to occur. Warning Series VQZ Specific Product Precautions 7 Be sure to read before handling. Refer to front matter 53 for Safety Instructions and pages 3 to 8 for 3/4/5 Port Solenoid Valve Precautions. 1328