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Machine has excessive | 1. | Motor fan rubbing on fan cover. | 1. Fix/replace fan cover; replace loose or damaged | |
vibration or noise. |
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| fan. |
| 2. | Machine incorrectly mounted on | 2. | Level/shim base; tighten/adjust mounting hardware |
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| floor or mobile base. |
| or feet. |
| 3. | Motor mounting loose. | 3. Tighten mounting bolts/nuts; use thread locking | |
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| fluid. |
| 4. | 4. | Replace | |
| 5. | Headstock gib loose. | 5. | Clean, |
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| (Page 38). |
| 6. | Knives are dull. | 6. | |
| 7. | Motor brushes worn/at fault (feed | 7. | Replace brush set (Page 35). |
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| motor only). |
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| 8. | Pulley loose or not in alignment; | 8. | Replace worn pulley, key, and shaft, and realign. |
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| shaft bent. |
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| 9. | Gearbox at fault (feed motor | 9. | Rebuild gearbox for bad gear(s)/bearing(s). |
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| only). |
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| 10. | Centrifugal switch out of | 10. | Adjust/replace centrifugal switch. |
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| adjustment; at fault (main motor |
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| only). |
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| 11. | Motor bearings worn or damaged. | 11. | Replace motor bearings or replace motor. |
| 12. | Cutterhead bearings at fault. | 12. | Replace bearing(s)/realign cutterhead. |
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Machine stalls or slows | 1. | Too much pressure when feeding | 1. | Reduce pressure when feeding workpiece. |
when operating. |
| workpiece. |
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| 2. | Workpiece is warped. | 2. | Straighten workpiece or use a different one. |
| 3. | Rails are incorrectly adjusted. | 3. | Adjust/calibrate rails. |
| 4. | Workpiece material not suitable | 4. | Only cut applicable metals with the correct grade |
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| for machine. |
| and size of blade or bit. |
| 5. | Feed rate or cutting speed too | 5. | Decrease feed rate or cutting speed. |
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| fast. |
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| 6. | Belt slipping. | 6. | Tension/replace belt; ensure pulleys are aligned. |
| 7. | Pulley or sprocket slipping on | 7. | Replace pulley and key or set screw. Replace shaft |
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| shaft. |
| if worn. |
| 8. | Motor connection wired | 8. | Review wiring diagram under motor junction box |
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| incorrectly. |
| cover; correct wire connections. |
| 9. | Motor brushes at fault (feed motor | 9. | Remove/replace brushes. |
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| only). |
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| 10. Circuit board at fault. | 10. Inspect circuitry for arcing or burns. Replace if at | ||
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| fault (wiring diagram on Page 40). |
| 11. Motor speed rheostat at fault. | 11. Test and replace if at fault. | ||
| 12. Contactor has poor contacts. | 12.Test all legs for continuity and power, test field coil | ||
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| and replace if at fault. |
| 13. Centrifugal switch at fault. | 13. Adjust/replace centrifugal switch if available. | ||
| 14. Motor at fault. | 14. Test for shorted windings, bad bearings and repair | ||
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| or replace. |
| 15. Gears in gearbox broken, slipping, | 15. Replace for broken or slipping gears. | ||
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| or stuck. |
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Handwheel binds or is | 1. | Lock lever is tightened. | 1. | Loosen lock lever knob. |
difficult to move. | 2. | Burr, debris, or gunk hindering way | 2. | |
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| and column slide. |
| leadscrew, ways, and gib. |
| 3. | Bushings worn, dry, or damaged. | 3. | Clean/lubricate/replace shaft and bushings. |
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