Shaft Sealing With A Mechanical Seal - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

Commissioning, Startup, Operation, and Shutdown
2. Check that the oil level is correct. The correct oil level is centered in the bullseye sight
glass, when the pump is not in operation. During operation, bullseye sight gives a false oil
level reading. Shown is general schematic. Oil level is below outer race of bearing.
1. Plug
2. Reservoir
3. Main body
Lubricate the bearings with pure or purge-oil mist (optional)
Before lubricating with purge-oil mist, make sure that the bearing frame is properly lubricated.
See Lubricate the bearings with oil.
The oil requirements for ring-oil-lubricated bearings also apply to oil-mist-lubricated bearings.
1. Prepare the oil-mist generator according to the manufacturer's instructions.
2. Connect the oil-mist supply lines to the inlet connections.
3. Connect the drain and vent lines to the outlet connections.
1. Oil mist inlet
2. Oil mist outlet
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 sealing with a mechanical seal

Precautions
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.
48 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual