Goulds Pumps 3355 - IOM - Manual (Page 37)

Maintenance
4. 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. 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.
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.
Reference drawing
The manufacturer supplies a reference drawing with the data package. Keep this drawing for
future use when you perform maintenance and seal adjustments. The seal drawing specifies
the required flush fluid and attachment points.
Before you start the pump
Check the seal and all flush piping.
Mechanical seal life
The life of a mechanical seal depends on the cleanliness of the pumped fluid. Due to the
diversity of operating conditions, it is not possible to give definite indications as to the life of a
mechanical seal.
Model 3355 Installation, Operation, and Maintenance Manual 35