Goulds Pumps 3796 i-FRAME - IOM - Manual (Page 68)

Regrease the grease-lubricated bearings
NOTICE:
Make sure that the grease container, the greasing device, and the fittings are clean. Failure to do this can
result in impurities entering the bearing housing when you regrease the bearings.
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1. Wipe dirt from the grease fittings.
2. Remove the two grease-relief plugs from the bottom of the frame.
3. Fill both of the grease cavities through the fittings with a recommended grease until the fresh grease
comes out of the relief holes.
4. Make sure that the frame seals are seated in the bearing housing.
If they are not, press them in place with the drains located at the bottom.
5. Reinstall the grease-relief plugs.
6. Wipe off any excess grease.
7. Recheck the alignment.
The bearing temperature usually rises after you regrease due to an excess supply of grease. Temperatures
return to normal in about two to four operating hours as the pump runs and purges the excess grease
from the bearings.
Lubricating-grease requirements
Precautions
NOTICE:
• Never mix greases of different consistencies (NLGI 1 or 3 with NLGI 2) or with different thickeners.
For example, never mix a lithium-based grease with a polyurea-based grease. Doing so may result in
decreased performance.
• Remove the bearings and old grease if you need to change the grease type or consistency. Failure to
do so may result in equipment damage or decreased performance.
Bearing temperature
Bearing temperatures are generally about 20°F (18°C) greater than bearing-housing outer surface
temperatures.
This table shows the type of grease required for the operating temperature of the pump.
Bearing temperature Type of grease
5°F to 230°F (-15°C to 110°C) Use a lithium-based mineral-oil grease with a
consistency of NLGI 2.
Maintenance (Continued)
66 Model 3796 i-FRAME Installation, Operation, and Maintenance Manual