Other recommended tools include an infrared thermometer, an infrared camera, an ultrasonic metal thickness meter, a vibration meter (ultrasonic or accelerometer), a laser alignment tool, a multimeter for voltage and amperage, a micrometer depth gauge, and a dye penetrant test kit to detect cracks. Most people carry a smartphone with a good digital camera, which is a useful tool for photographing or recording inspection findings. This is usually done by employing a vacuum system prior to entering or servicing the condenser. To ensure worker safety, all proper lock out-tag out procedures for the unit and any site safety procedures must be followed prior to beginning inspection or maintenance work. Additionally, measures must be taken to confirm there is no refrigerant left in the coil. Digital images are a useful method for documenting present conditions and demonstrating changes over time. Although maintenance frequency will depend on a variety of factors-e.g., condition of circulating water, cleanliness of ambient air, and the unit’s operating environment-each area of inspection should be performed at least annually and more frequently as recommended by the manufacturer for a particular component or as circumstances warrant.įor each inspection, it is important to document the inspection process and all findings. These guidelines cover 10 areas and should be done in accordance with the manufacturer’s recommendations and plant preventative maintenance schedule. Baltimore Air Coil (BAC) product applications manager, Steve Kline, provides an effective evaporative condenser preventative maintenance program.
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