Series HRZ Specific Product Precautions 3 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. Operation Caution 1. Confirmation before operation 1. The circulating fluid should be within the specified range of “HIGH” and “LOW”. 2. Be sure to tighten the cap for the circulating fluid port until the click sound is heard. 2. Emergency stop method In the case of an emergency, press down the EMO switch which is fitted on the front face of this product. Operation Restart Time Caution 1. Wait five minutes or more before restarting operation after it has been stopped. If the operation is restarted within five minutes, the protection circuit may activate and the operation may not start properly. Maintenance Warning 1. Do not operate the switch with wet hands or touch electrical parts such as an electrical plug. This will lead to an electrical shock. 2. Do not splash water directly on this product for cleaning. This will lead to an electrical shock or a fire. 3. When the panel was removed for the purpose of inspection or cleaning, mount the panel after works were done. If the panel is still open, or running the equipment with the panel removed, it may cause an injury or electric shock. Caution 1. In order to prevent a sudden product failure of the unit, replace the replacement parts every 36 months. 2. Perform an inspection of the circulating fluid every 3 months. 1. In the case of fluorinated fluids: Discharge the circulating liquid and avoid any dirty objects, or water moisture, or foreign objects entering the system. 2. In the case of ethylene glycol aqueous solution: Maintain the condensation at 60%. 3. In the case of clear water, deionized water: Replacement is recommended. 3. Check the water quality of cooling water every 3 months. Regarding the water quality standards for cooling water, refer to “Temperature Control Equipment Precautions”. 1346