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Warning 1. Do not use the product near flames, or in equipment or machinery that exceeds an ambient temperatures of 60°C. There is a danger of causing a fire because the air-hydro type uses a flammable hydraulic fluid. Refer to the Material Safety Data Sheet (MSDS) of the hydraulic fluid when supplying the fluid. 2. Do not use the product in a clean room. Caution 1. Do not use in an environment, equipment, or machine that is not compatible with oil mist. The air-hydro type generates an oil mist during operation which may affect the environment. 2. Be certain to install an exhaust cleaner on the directional control valve for the air-hydro type. A very small amount of hydraulic fluid is discharged from the exhaust port of a directional control valve, which may contaminate the surrounding area. 3. Install the air-hydro type in locations where it can be serviced easily. Since the air-hydro type requires maintenance, such as refilling of hydraulic fluid and bleeding of air, ensure sufficient space for these activities. Selection Caution 1. Select an air-hydro type in combination with an air-hydro unit. Since good operation of an air-hydro type depends on its combination with an air-hydro unit, carefully select an appropriate air-hydro unit. Piping Warning 1. For air-hydro type piping, use self-aligning fittings. Do not use one-touch fittings in the piping for an air-hydro type, because oil leakage may occur. 2. For air-hydro type piping, use hard nylon tubing or copper piping. As in the case of hydraulic circuits, surge pressures greater than the operating pressure may occur in an air-hydro type piping, making it necessary to use safer piping materials. Lubrication Warning 1. Completely discharge the compressed air in the system before filling the air-hydro unit with hydraulic oil. When supplying hydraulic fluid to the air-hydro unit, first confirm that safety measures are implemented to prevent dropping of objects and the release of clamped objects, etc. Then, shut off the air supply and the equipment’s electric power and exhaust the compressed air in the system. If the air-hydro unit’s supply port is opened with compressed air still remaining in the system, there is a danger of hydraulic fluid being blown out. Refer to the Material Safety Data Sheet (MSDS) of the hydraulic fluid when supplying the fluid. 2. Use petroleum hydraulic fluid which can be used as turbine oil. If non-flammable hydraulic fluid is used, it may cause problems. Suitable viscosity is in the range of approximately 40 to 100 mm2/s in operating temperature. The suitable operating temperature for ISO VG32 is the range of 15 to 35°C. If the operating temperature range is beyond ISO VG32, select ISO VG46 (suitable for 25 to 45°C range). Note) Refer to SMC’s website for details about each manufacturer’ s brand name of class 1 turbine oil (no additive) ISO VG32. Additionally, please contact SMC for details about class 2 turbine oil (with additives) ISO VG32. For Air-hydro Type Please read this page along with the Rotary Actuators Precautions. Rotary Actuators Precautions 6 Be sure to read this before handling. Caution 1. Bleed air from the air-hydro type on a regular basis. Since air may accumulate inside the air-hydro type, bleed air from it, for example before starting work. Bleed air from a bleeder valve provided on the air-hydro type or the piping. 2. Verify the oil level of the air-hydro system on a regular basis. Since a very small amount of hydraulic fluid is discharged from the air-hydro type and the air-hydro unit circuit, the fluid will gradually decrease. Therefore, check the fluid regularly and refill as necessary. The oil level can be checked with a level gauge in the air-hydro converter. Maintenance Design 28