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Electrical Wiring Warning Warning Facility Water Supply Series HED Specific Product Precautions 2 Be sure to read this before handling. Refer to front matter 41 for Safety Instructions and pages 1246 to 1249 for Temperature Control Equipment Precautions. 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 earth leakage breaker. As a countermeasure against current leakage, install an earth leakage breaker in the main power supply. 3. Confirmation of 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, capacity, and frequency. Confirm that the voltage fluctuation is within the specified value. 4. Grounding Be sure 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 pull the cord or cable. 6. Wire with an applicable cable size 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, communications 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. 8. Check for incorrect wiring. Incorrect wiring can damage the Chemical Thermo-con or cause malfunction. Be sure to check wiring is connected properly. 9. Check the model of the Chemical Thermo-con. The HED003 and HED005 series use the same connector. If the temperature controller and heat exchanger of different models are combined by mistake, an alarm may be generated and the specified performance may not be obtained. Be sure to check the combination of models. 1. Be sure 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. (Facility water flow rate range: 5 to 10 L/min) 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 extremely 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, and removing the cause of the flow rate reduction. Secondly, make sure that there is no leakage again. . Electrical conductivity should be 100 [μS/cm] or more. Standard item Reference item Item pH (at 25°C) Electrical conductivity (25°C) Chloride ion Sulfuric acid ion Acid consumption amount (at pH4.8) Total hardness Calcium hardness Ionic state silica Iron Copper Sulfide ion Ammonium ion Residual chlorine Free carbon Standard value 6.5 to 8.2 100. to 800 [μS/cm] 200 [mg/L] or less 200 [mg/L] or less 100 [mg/L] or less 200 [mg/L] or less 150 [mg/L] or less 50 [mg/L] or less 1.0 [mg/L] or less 0.3 [mg/L] or less Should not be detected. 1.0 [mg/L] or less 0.3 [mg/L] or less 4.0 [mg/L] or less 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 objects 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 . Circulating type . Circulating water” Facility Water Quality Standards 2. If the temperature of the facility water is too low, it can cause formation of condensation inside the heat exchanger. Supply facility water with a temperature over the atmospheric dew point to avoid the formation of dew condensation. 3. If the facility water piping is connected to multiple machines, the facility water exchanges heat at the upstream side and its temperature will become higher as it goes downstream. Limit the number of connected Chemical Thermocons to two per facility water system, and if more than two chemical thermocons are to be connected, increase the number of systems. 1438