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Text version of the page
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| f\ Vacuum Equipment / Common Precautions Be sure to before handling. | |||
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| Selection & Design A Warning ► Safe designs should be developed, which accounts for the possibility of accidents resulting from a drop in vacuum pressure due to power failure or trouble with the air supply, etc. If vacuum pressure drops and there is a loss of vacuum pad adsorption force, work pieces being carried may fall, causing human injury or damage to machinery, Safety measures should be implemented such as the installation of drop prevention guides. ► Follow vacuum specifications for vacuum switching valves and vacuum breakers. If valves are installed in vacuum piping which do not follow vacuum specifications, vacuum leakage will occur, Be certain to use vacuum specification valves. ► Select vacuum pumps which have a suitable suction flow rate. <When there is a vacuum leak from the work piece or the piping> If the vacuum pump suction flow rate is too low, this will cause poor adsorption. <When piping is long or large diameter> The adsorption response time will increase due to the increased volume of the piping. Select vacuum pumps with a suitable suction flow rate by referring to their technical data. ► If the suction flow rate is too high, setting of vacuum switches will become difficult. In the case of adsorbing a small work piece of only a few millimeters, if an vacuum pump is selected which has a high suction flow rate, the pressure difference when adsorbing and releasing the work piece is small, and sometimes setting of the vacuum switch becomes difficult. Therefore, an appropriate vacuum pump should be selected. ^ When two or more pads are piped to one vacuum pump, if one pad releases its work piece, the other pads will also release. When one pad is removed from its work piece, there is a drop in vacuum pressure which causes the other pads to release their work pieces also. ► Use piping with an adequate effective sectional area. Select piping for the vacuum side which has an adequate effective sectional area, so that the vacuum pump s maximum suction flow rate can be accomodated by the piping. Also, make sure that there are no unnecessa restrictions or leaks, etc. along the course of the piping. The piang on the air supply side must be designed so that it corresponds to each vacuum pump s air consumption. The effective sectional area of tubing, fittings and valves, etc., should be sufficiently large, and the pressure drop reaching the vacuum pump should be kept to a minimum. Furthermore, design of the air supply should be performed while taking into consideration the vacuum pump maximum air consumption and the air consumption of other pneumatic circuits. Caution |> For information on related items, such as directional control equipment and drive equipment, refer to the caution sections in each respective catalog. | Mounting A Warning ► Do not obstruct the exhaust port of the Vacuum pump. If the exhaust port is obstructed when mounted, a vacuum will not be generated Piping | ||
| Caution ^ Avoid disorganized piping. Piping which is direct and of the shortest possible length should be used for both the vacuum and supply sides, and dis organized piping should be avoided. Unnecessary length increases the piping volume, and thus increases the response time. ► Use piping with a large effective sectional area on the exhaust side of the vacuum pump. If the exhaust piping is restrictive, there will be a decline In the vacuum pump s performance. ► Make sure that there are no crushed areas in the piping due to damage or bending. Operating Environment A Warning ► Do not operate in atmospheres of corrosive gases, chemicals, sea water, water or steam. ► Do not operate in explosive areas. ► Do not operate in locations where vibration or impact occurs. ► Confirm the specifications for each series. ^ In locations which receive direct sunlight, provide a protective cover, etc. ^ In locations near heat sources, protect against radiated heat. in locations where there is contact with spatter from water, oil or solder, etc., implement suitable protective measures. ► In cases where the vacuum unit is surrounded by other equip ment, etc., or the unit is energized for an extended time, implement measures to exhaust excess heat, so that temperatures remain within the range of the vacuum unit's specifications. Maintenance A Warning ► Clean suction filters on a regula basis. (Refer to specifications). The performance of vacuum pumps will deteriorate due to clogging in filters. Large flow filters should be used, especially in dusty locations. | |||
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