MAINTENANCE AND SERVICE OF SCREW COMPRESSORS
Many users screw compressors, rental services and contractors for execution of non-standard maintenance and repair of machines. Overhaul and maintenance require specialist, but some important observations and service functions may be the responsibility of the operating personnel. Valuable data that will be recorded and analyzed include: suction pressure, the temperature, the suction superheat, pressure, flow, temperature, oil pressure in the compressor, pressure drop of oil, filter, oil temperature and oil level. Some of these items, such as pressure and temperature of the suction and discharge pressures are conditions imposed by the system, but they should normally be in order for the compressor to function properly.
Preventive maintenance task is to periodically clean the filter for oil off the compressor is required. Service valves on both sides of the filter first closed the purge valve is opened to relieve the pressure of the refrigerant. Filter filter opened and cassettes removed by flushing with clean oil.
After replacing the print cartridge canister is filled with pure oil, closed, and then ready for resumption of service.
Other maintenance procedure is usually handled by the operating staff of the periodic replacement of elements in the Association of the separator. Compressor off, discharge valve is closed, and the intake valve is open for ventilation refrigerant low pressure region. Combining elements are accessible after removal of the ladder. A new gasket is available ladder to the Assembly.
High quality oil is necessary because the crucial role of oil performs the operation of the compressor. When the initial charging of the oil in the compressor, two blood samples must be collected and analysis in the laboratory as a reference control. Other samples should be stored in a glass container and used as a reference basis for the clarity of oil produced every 2000 operating hours. Systematic oil analysis program should determine the viscosity of the oil at two temperatures, 38C (100F) and 100C (212F). In addition, the moisture content should be measured, and the content of mineral substances (iron, antimony, phosphorus, copper, magnesium). The presence of minerals may indicate problems in the cooling system or the compressor itself. All data from periodic analysis of oils are used as an indication of when to change the oil...
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Industrial