Step 6 Check for voltage and phase where the compressor is going to be located. Check with your equipment manufacturers for psig recommendations on other equipment. Other tools, such as tire changers, require up to 150 psig. Step 5 Determine the required pressure (psig). This is the amount of CFM you would use to determine the proper compressor. Step 4 Duty Cycle: How long do you expect the compressor to run during working hours? In this example, 70% of the time you expect the compressor to be providing air to the equipment. Step 3 Allow for leaks and growth of the business. Step 2 Once all the air requirements have been determined, total the CFM needed for the air compressor. In the example below, we are sizing the compressor for a typical auto body shop. Use the chart below to determine your average CFM requirements per tool or check with the manufacturer. The following lays out a systematic approach for making the right decision. Sizing an air compressor requires a logical sequence of steps to determine the proper amount of air for the application. Moisture downstream of the cleanup equipment.Increased refrigerant suction pressures on the air dryer.Compressor shutdowns at high temperature.High compressor operating temperatures.Some symptoms of poor installations of air. When installing air-cooled compressed-air equipment, consider the pressure dew point of the compressed airĮxiting the air dryer, which is dependent on proper installation.Keep the outside of the air-cooled heat exchangers clean.Position equipment so that the cooling fan exhaust is in the direction of the airflow.Provide the correct airflow pattern across air-cooled compressed air equipment by installing intake louvers in the wall.The location of the compressed-air equipment, which should be based on delivering the desired compressed-air quality and should:.Important factors to consider in achieving and maintaining air quality standards with air-cooled compressed-air equipment include:
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