MAINTENANCE |
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Table 2 Check Points for Periodic Inspection |
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Check Point | Check Item | Check Method | Criteria | Disposition |
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Operating | Loose bolts, | Tighten using | Make sure all bolts, nuts | Tighten if loose. |
Mechanism | nuts or screws | screwdriver or | and screws are tight. | See Table 1 for |
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| wrench. |
| tightening torques. |
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| Dust or foreign | Visual | The circuit breaker | Wipe with a clean |
| matter inside | inspection. | should be clean and | dry cloth. |
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| contain no foreign matter. |
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| Indicator | Visual | Make sure the number of | Check the cause |
| operation | inspection. | operations is correctly | and repair. |
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| displayed. |
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| Warpage | Visual | There should be no | Check the cause |
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| inspection. | warpage or missing | and repair. |
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| parts. |
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| Smooth | Manual | Make sure moving parts | Apply a small |
| operation | operation. | operate smoothly. | amount of |
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| Visual |
| lubrication. |
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| inspection or |
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| touch. Check |
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| lubrication. |
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Main Circuit | Discoloration | Visual | Make sure there is no | Check the cause |
| due to heat | inspection. | discoloration. | and repair. Tighten |
| from conducting |
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| connections to circuit |
| parts |
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| breaker. See Table |
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| 1 for tightening |
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| torques. |
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| Loose bolts, | Tighten using a | Make sure all bolts, nuts | See Table 1 for |
| nuts or screws | wrench. | and screws are tight. | tightening torques. |
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| Dust on surface | Visual | Make sure there is no | Wipe with a clean, |
| of vacuum | inspection. | dust on the surface. | dry cloth. |
| interrupter |
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Insulator | Dust, foreign | Visual | Make sure there is no | Wipe with a clean, |
| matter or | inspection. | dust, foreign matter or | dry cloth. If |
| damage |
| breakage. | damaged, contact |
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| Toshiba. |
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