TROUBLESHOOTING
|
|
|
| SECTION | |
|
|
|
| Mechanical Faults | |
|
|
|
|
|
|
PROBLEM |
| PROBABLE CAUSE |
| REMEDY | |
Mechanical Faults |
|
|
|
|
|
A. Bearing overheating | 1. | Excessive wear on the V- | 1. | Check belt tension and |
|
| Belt drive | adjust as necessary |
| ||
| 2. | Inadequate lubrication | 2. | Check lubrication frequency |
|
|
|
| and the recommended |
| |
|
|
| lubricants in motor and rotor |
| |
|
|
| bearings |
| |
| 3. | Dirt/Contamination in | 3. | Eliminate source of |
|
| bearing | contamination |
| ||
B. Visible cracks in knives | 1. | Incorrect grinding | 1. | Check grinding procedures |
|
| procedure or incorrect | and contact a Cumberland |
| ||
| grinding wheels in use | Service Engineer |
| ||
C. Knives moving on seats | 1. | Uneven knifes seat surfaces | 1. | Clean knife seats to provide |
|
|
|
| maximum bearing surface |
| |
| 2. | Loose knife screws | 2. | Tighten to correct torque, |
|
|
|
| per section 4 |
| |
| 3. | Stretched knife screws | 3. | Knife screws should not be |
|
|
|
| used more than six times. |
| |
|
|
| Renew them if there is |
| |
|
|
| evidence of stretching |
| |
D. Knives breaking | 1. | Possibly due to cracks | 1. | Refer to problem B. |
|
| caused by incorrect grinding | “Visible cracks in knives” |
| ||
|
|
| (above left) |
| |
| 2. | Abnormally heavy material | 2. | Contact a Cumberland |
|
|
|
| Service Engineer |
| |
| 3. | Contaminated input | 3. | Inspect the material for |
|
| material | contaminates and foreign |
| ||
|
|
| matter |
| |
E. Excessive knife wear | 1. | Open knife setting | 1. | Reset as detailed in |
|
|
|
| alternate material |
| |
| 2. | Abrasive materials | 2. | Contact a Cumberland |
|
|
|
| Service Engineer |
| |
F. Screens wearing | 1. | Incorrectly seated | 1. | Check that the screen is |
|
|
|
| seated correctly and fully on |
| |
|
|
| its cradle |
| |
| 2. | Abrasive materials being | 2. | Obtain special alloy or heat |
|
| granulated | treated screens |
|
96