Oscillating fan
From DDL Wiki
(Difference between revisions)
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| Inhibited Rotation, Blade Fracture || Complete Inoperable||8 || Penetration of Cover ||4 ||Penetrate Repeatedly ||1 ||32 ||Warning Label, Redesign Cover ||User ||- ||8 ||3 ||1 ||24 | | Inhibited Rotation, Blade Fracture || Complete Inoperable||8 || Penetration of Cover ||4 ||Penetrate Repeatedly ||1 ||32 ||Warning Label, Redesign Cover ||User ||- ||8 ||3 ||1 ||24 | ||
|- | |- | ||
| - | ! | + | ! Shaft |
| - | | | + | | Non-concentric Rotation|| Vibration and Noise ||5 ||Broken Bearing, Unbalanced Weight, Shaft Non-Uniformity ||2 ||Quality Control ||3 ||30 ||Vibration Testing ||Assembly ||- ||5 ||1 ||3 ||15 |
|- | |- | ||
Revision as of 22:19, 18 September 2007
| 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 |
| Blade Cover | Inhibited Rotation, Blade Fracture | Complete Inoperable | 8 | Penetration of Cover | 4 | Penetrate Repeatedly | 1 | 32 | Warning Label, Redesign Cover | User | - | 8 | 3 | 1 | 24 |
| Shaft | Non-concentric Rotation | Vibration and Noise | 5 | Broken Bearing, Unbalanced Weight, Shaft Non-Uniformity | 2 | Quality Control | 3 | 30 | Vibration Testing | Assembly | - | 5 | 1 | 3 | 15 |
