18
Troubleshooting
Fault | Probable cause | Suggested remedy | ||
|
|
|
|
|
Excessive blade | 1. | Material loose in vise. | 1. | Clamp work securely. |
breakage | 2. | Incorrect speed or feed. | 2. | Refer to Figure 6 or check |
|
|
|
| Machinist’s Handbook for speed/ |
|
|
|
| feed appropriate for the material |
|
|
|
| being cut. |
| 3. | Teeth too coarse for material. | 3. | Check Machinist’s Handbook for |
|
|
|
| recommended blade type. |
| 4. | Incorrect blade tension. | 4. | Adjust blade tension to the point |
|
|
|
| where the blade just does not slip |
|
|
|
| on the wheel. |
| 5. | Saw blade contacts workpiece | 5. | Start the motor before placing the |
|
| before the saw is started. |
| saw on the workpiece. |
| 6. | Blade rubs on the wheel flange. | 6. | Adjust blade tracking. |
| 7. | Misaligned guides. | 7. | Adjust guides. |
| 8. | Cracking at weld. | 8. | Longer annealing cycle. |
|
|
|
|
|
Premature blade | 1. | Blade teeth too coarse. | 1. | Use a finer tooth blade. |
dulling | 2. | Blade speed too high. | 2. | Try a lower blade speed. |
| 3. | Hard spots in workpiece or scale | 3. | Increase feed pressure (hard |
|
| on/in workpiece. |
| spots). Reduce speed, increase |
|
|
|
| feed pressure (scale). |
| 4. | Work hardening of material | 4. | Increase feed pressure by reduc- |
|
| (especially stainless steel). |
| ing spring tension. |
| 5. | Insufficient blade tension. | 5. | Increase tension to proper level. |
| 6. | Operating saw without pressure | 6. | Do not run blade at idle in/on |
|
| on workpiece. |
| material. |
|
|
|
|
|
Bad cuts | 1. | Feed pressure too fast. | 1. | Decrease pressure. |
2. | Guide bearings not adjusted | 2. | Adjust guide bearing clearance to | |
|
| properly. |
| 0.001 inch (0.002 inch maximum). |
| 3. | Inadequate blade tension. | 3. | Gradually increase blade tension. |
| 4. | Dull blade. | 4. | Replace blade. |
| 5. | Incorrect blade speed. | 5. | Check blade speed |
|
|
|
| (see Figure 6). |
| 6. | Blade guide assembly is loose. | 6. | Tighten blade guide assembly. |
| 7. | Blade guide bearing assembly | 7. | Tighten blade guide bearing |
|
| loose. |
| assembly. |
| 8. | Blade track too far away from | 8. | Adjust blade tracking. |
|
| wheel flanges. |
|
|
| 9. | Guide bearing worn. | 9. | Replace worn bearing. |
|
|
|
|
|
Bad cuts (rough) | 1. | Blade speed too high for feed | 1. | Reduce blade speed and feed |
|
| pressure. |
| pressure. |
| 2. | Blade is too coarse. | 2. | Replace with finer blade. |
|
|
|
|
|
