TABLE OF CONTENTS Refer to Figure B-4 for this section.
Item 1 is the electric motor. The most common inspection item for the motor is for heat. The motor should be approximately 25 to 29 F higher in temperature than the surrounding environment. If the motor's temperature is higher than this, it will have a shorter life dueto the deteriorating effect the heat has on the insulation of the motor. Every 20 -temperature rise above the environmental temperature cuts the life of the insulation by one half. When the insulation fails, so does the motor. If the temperature rises above this level, efforts should be made to find the problem so the motor can be cooled back down again.
| Preventive Maintenance Inspection | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Inspection 4: Belt Conveyor | |||||||||
| Check the column that indicates the condition of the unit or what problem exists named in the left column. | O. K. | Requires lubrication | Requires adjustment | Requires replacement | Requires cleaning | Excessive vibration | Excessive heat | Loose | See additional comments |
| 1. Electric Motor | |||||||||
| A. Bearings | |||||||||
| B. Base and bolts | |||||||||
| C. Temperature | |||||||||
| D. Vibration | |||||||||
| E. Noise | |||||||||
| Coupling Roll |
