| Item and Function | Failure Mode | Effects of Failure | S | Causes of Failure | O | Design Controls | D | RPN | Recommended Action | Responsibility and Deadline | Actions Taken | S | O | D | RPN
|
| Motor/Shaft
| Inhibited Rotation | Inefficient Operation | 5 | Debris (e.g. dust) in Fan | 4 | Run Under Extreme Dust and Debris Conditions | 2 | 40 | Filter, Accessibility for Cleaning, Better Protection of Rotating Parts | Motor Housing | - | 5 | 3 | 2 | 30
|
| Swivel Mount
| Nut Stripping, Plastic Fracture | Cannot Adjust Vertical Directoin Fan Cannot Effectively Circulate Air | 8 | Overtightening, Material Failure | 3 | Overtightened Screw, Force applied on Swivel Area | 1 | 24 | Use Torque Limited Fastening, Using Stronger Plastic | Swivel | - | 8 | 2 | 1 | 16
|
| Oscillation Button
| Dislocation of Button | Cannot Toggle Oscillation | 6 | Stripped Gear, Button Disengaged | 5 | Stronger Gears, Improved Connection | 2 | 60 | Fatigue Testing | Gears and Button | - | 6 | 3 | 2 | 36
|
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