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Centrifugal fans are extremely sensitive to variations in either suction or discharge conditions. In addition to variations in ambient conditions (i.e., temperature, humidity, etc.), control variables can have a direct effect on fan performance and reliability. Most problems that limit fan performance and reliability are … See more Generally, the control range of centrifugal fans is about 15 percent above and below its BEP. Fans operated outside this range tend to become … See more In applications where a measurable fan-speed change can occur (i.e., V-belt or variable-speed drives), care must be taken to ensure that the selected speed does not coincide with any of … See more Dirt, moisture, and other contaminates tend to adhere to the fan's rotating element. This buildup, called plate out, increases the mass of the rotor assembly and decreases Source: Integrated Systems, Inc. … See more By design, the structural support of most general-purpose fans lacks the mass and rigidity needed to prevent flexing of the fan's housing and rotating assembly. This problem is more pronounced in the horizontal plane but … See more WebOct 31, 2015 · 1. The furnace blows hot air only in "FAN" mode. 2. When the mechanical thermometer is switched to "AUTO", I could hear the click sound from the unit, however the FAN does not start blowing the hot air … WebNov 22, 2024 · A failure mode is a state where a design fails to meet user needs and/or its intended functions, among other requirements. Since a function of the seat system is to support the user’s weight, then a failure mode—one of the ways this system could fail—is that the seat might break. Step #3: Describe the potential effects of each failure ... organisation structure in word format