Vogt 100/75 HAD, Service Manual, Page: 9 / 36

9
Pump Start
Initial Start-up
Next Starts
Figure 2. Time compared to temperature characteristics of a grease lubricated bearing assembly
The most common causes of high initial temperatures are:
- Excessive grease in bearings during initial start-up due to excessive relubrication.
- Belt drive tension is high for initial operation.
- Operation while idle state is indicated.
- Initial grease load is high to improve the chance of the bearings surviving the initial storage period.
!
WARNING
- Do not add grease during start-up and initial operation.
- Check belt tension.
- Run the pump at the active operating point.
- According to the graph in figure 2, the temperature should not exceed a pick of 105°C, then wait approximately 4 hours
to cool it down and test it again. The pick should go down until it stabilizes.
If the assembly continues to heat up, recheck belt tension, operating point and speed. Check:
- Presence of solid particles inside. It is recommended to split the tests with water.
- Verify system pressure and flow.
Pump Start