Goulds Pumps 3180-86 - IOM - Manual (Page 67)

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.
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. Run the pump for about 30 minutes or until grease no longer comes out of the housing.
6. Reinstall the grease-relief plugs.
7. Wipe off any excess grease.
8. 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.
Lubricate the bearings after a shutdown period
1. Flush out the bearings and bearing frame with a light oil to remove contaminants.
During flushing, make sure to rotate the shaft slowly by hand.
2. Flush the bearing housing with the proper lubricating oil to ensure oil quality after cleaning.
Shaft-seal maintenance
Mechanical-seal maintenance
WARNING:
The mechanical seal used in an Ex-classified environment must be properly certified. Prior to startup,
make sure that all areas that could leak pumped fluid to the work environment are closed.
CAUTION:
Never operate the pump without liquid supplied to mechanical seal. If you run a mechanical seal dry, even
for a few seconds, this can cause seal damage. Physical injury can occur if a mechanical seal fails.
Maintenance
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual 65