ROTARY SCREW COMPRESSOR OPERATION |
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Rotary screw air compressors are generally "oil flooded". They utilize lubricant to cool the heat of compression, seal the compression chamber and lubricate the bearings. The lubricant-coolant system of a typical rotary screw air compressor is shown at left. This system is essential to the proper operation of the compressor. Proper system maintenance can add years of life to your compressor. Lack of maintenance can cause premature failure. Maintenance Agreement. There are four basic components which need to be serviced on a regular basis. The oil filter, air filter, air-oil separator elements and the Lubricant. |
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Oil Filters The oil filter element removes dirt and abrasive particles from the circulated lubricant. The elements are generally 3 to 25 micron rated, synthetic media or impregnated paper construction of the cartridge or spin-on design. A structural core and reinforcing screen support the filter media which is generally pleated to increase the dirt holding capacity. Change intervals are 1000 to 2000 hours using either synthetic or petroleum based lubricants. If the filter is equipped with a service indicator, the element should be changed as indicated. |
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Oil Filters An air filter is the first step in protecting your compressor from contaminants. They are generally constructed of paper or synthetic media and are normally of the surface loading design not in depth. Some filters are cleanable with a nonflammable solution and low pressure compressed air. Change intervals vary greatly with ambient conditions. In a normal industrial application, you should clean/change your element every 500 to 1000 hours. In some adverse environments, daily service is not uncommon. |
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Air-Oil Separators This element removes the lubricant from the compressed air flow prior to leaving the compressor. A coalescing action with an in-depth loading micro-fiber element uses direct interception and diffusion to remove lubricants. Separator elements come in a single or two stage, pleated or un-pleated design and have an outside-inside or inside-outside flow pattern. Efficient oil removal to 2-3 PPM (parts per million) are common. Change intervals are regulated by the pressure differential across the element and should be changed in the 8 to 10 PSIG range. |
| AIR-OIL SEPARATOR OPERATION | |
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Separators should be capable of removing .3 micron particles and larger with a 99.96% efficiency. Air-Oil separators use a two stage coalescing process to separate the entrained oil from the air stream. The first stage intercepts the oil mist and creates larger droplets. The second stage separates these larger droplets from the air stream and allows them to drain to a collection point. The accumulated oil returns to the air end to be recycled automatically. A separator is constructed of borosilicate or micro-fiber media strengthened by steel support cylinders capable of withstanding differential pressures up to 50 PSIG. Proper grounding prevents static electricity buildup. |
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| Texas Address Air Mac Inc. 8901 Directors Row Dallas, TX 75247 Map Phone - 214.879.1010 Fax - 214.879.1011 |
Oklahoma Address Air Mac Inc. 1104 SE 59th Oklahoma City, OK 73129 Map Phone - 405-632-2510 Fax - 405-632-0023 |
E-mail us at sales@airmac.com |
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