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Temperature Control Equipment Precautions 3 Be sure to read this before handling. For detailed precautions on each series, refer to the main text. (Water-cooled refrigeration) Facility Water Supply Warning 1. Be certain to supply the facility water. 1. Prohibition of water-cut operation, very little flow rate of water operation. Do not operate under the condition that there is no facility water or where there is very little flow rate of water is flowing. In this kind of operation, facility water temperature may become extremely higher. It is dangerous enough the material of hose may soften and burst when the piping supplying the facility water is connected with hose. 2. Actions to be taken when an emergency stop occurs due to high temperature. In case a stop occurs due to extremely high temperature resulting from a decrease in the facility water flow rate, do not immediately flow facility water. It is dangerous enough the material of hose may soften and burst when the piping supplying the facility water is connected with hose. First, naturally let it cool down by removing the cause of the flow rate reduction. Secondly, confirm that there is no leakage again. 1. Facility water quality 1. Use the facility water within the specified range. When using with other fluid than facility water, please consult with SMC. 2. When it is likely that foreign matter may enter the fluid, install a filter (20 mesh or equivalent). Caution The Japan Refrigeration and Air Conditioning Industry Association JRA GL-02-1994 “Cooling water system . Circulation type . Circulating water” Facility Water Quality Standard Electrical Wiring Warning 1. Electrical wiring job should be performed by a knowledgeable and experienced person. Power supply facilities and wiring works should be implemented in accordance with the electric facilities technical standards and provisions and conducted correctly. 2. Mounting a dedicated circuit breaker As a countermeasure against current leakage, install a ground fault circuit interrupter (GFCI) in the main power supply. 3. Check the power supply. If this product is used with voltages other than specified, it will likely lead to a fire or an electrical shock. Before wiring, confirm the voltage, volume, and frequency. Confirm that the voltage fluctuation is within ±10% of the specified value. 4. Grounding Be certain to ground (frame ground) with class D grounding (grounding resistance of 100 Ω or less). Can be grounded with the PE line of the power supply cable. Also, do not use together with equipment that generates a strong electrical magnetic noise or high frequency noise. 5. Wiring cable should be handled with care. Do not bend, twist or stretch the cord or cable. 6. Wire with an applicable size cable and terminal. In the event of attaching a power supply cable, use a cable and terminal size which is suitable for the electrical current of each product. Forcibly mounting with an unsuitable size cable will likely result in a fire. 7. Avoid wiring the signal line and power line in parallel. Since there may be a possibility of malfunction from noise, avoid parallel wiring between the temperature sensor line, communication line, signal line of alarm line, etc. and the power line and high voltage line. Also, do not place them in the same wiring tube. Standard item Reference item Item pH (at 25°C) Electric conductivity (25°C) Chloride ion (Cl.) Sulfuric acid ion (SO4 2.) Acid consumption amount (at pH4.8) Total hardness Calcium hardness (CaCO3) Ionic state silica (SiO2) Iron (Fe) Copper (Cu) Sulfide ion (S2 .) Ammonium ion (NH4 +) Residual chlorine (Cl) Free carbon (CO2) Unit . [μS/cm] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] Standard value Influence Corrosion Scale generation 6.5 to 8.2 100. to 800. 200 or less 200 or less 100 or less 200 or less 150 or less 50 or less 1.0 or less 0.3 or less Should not be detected. 1.0 or less 0.3 or less 4.0 or less キ キ キ キ キ キ キ キ キ キ キ キ キ キ キ キ キ . In the case of [MΩ縦m], it will be 0.00125 to 0.01. イ : Factors that have an effect on corrosion or scale generation. Even if the water quality standards are met, complete prevention of corrosion is not guaranteed. 59