ITT Goulds Pumps XHD, Installation, Operation And Maintenance Manual

Page: 75 / 160

Maintenance
XHD Installation, Operation, and Maintenance Manual 73
Figure 49: Grease-lubricated bearings
1. Wipe dirt from the grease fittings(319H).
2. Fill both of the grease cavities through the fittings with a recommended grease until the
fresh grease comes out of the relief fittings (319Y).
3. Make sure that the grease retention rings (253) are seated in the bearing housing.
If they are not, press them in place with the drains located at the bottom.
4. Wipe off any excess grease.
5. 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.
3. Refer to Reassembly section for proper bearing greasing procedure.
Shaft-seal maintenance
Mechanical-seal maintenance
WARNING:
The mechanical seal used in an Ex-classified environment must be properly certified.
The mechanical seal used in an ATEX classified environment must be properly certified.
CAUTION:
Running a mechanical seal dry, even for a few seconds, can cause seal failure and physical
injury. Never operate the pump without liquid supplied to the mechanical seal.
Cartridge-type mechanical seals
Cartridge-type mechanical seals are commonly used. Cartridge seals are preset by the seal
manufacturer and require no field settings. Cartridge seals installed by the user require
disengagement of the holding clips prior to operation, allowing the seal to slide into place. If the
seal has been installed in the pump by ITT, these clips have already been disengaged.
Other mechanical seal types
For other types of mechanical seals, refer to the instructions provided by the seal manufacturer
for installation and setting.