Goulds Pumps 3640 - IOM - Manual (Page 44)

Commissioning, Startup, Operation, and Shutdown
2. On the thrust housing, replace the 1/4 in. NPT plug with an oil-mist fitting. Replace the 1/2
in. NPT plug with a 1/2 in. to 1/4 in. bushing and insert an oil-mist fitting provided by the oil-
mist system manufacturer.
Oil-mist connections
A. Radial and thrust (1/4 in.)
B. Thrust only (1/2 in.)
C. Radial and thrust drain
NOTICE:
In both housings, the inboard channel beneath the 1/4 in. NPT connection must be 1/4 in. plug-
epoxied to prevent rapid oil drainage. Drill a 1/8 in. hole for required but restricted drainage.
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 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.
42 Model 3640 Installation, Operation, and Maintenance Manual