Goulds Pumps 3610 - IOM - Manual (Page 43)

Commissioning, Startup, Operation, and Shutdown
Pure-oil mist lubrication provides constant oil mist in the bearing housing. This system does not
use the oil sump, oil ring, or constant-level oiler. The drain connections in the bearing housing
are used as part of the oil recirculation system.
1. On the radial housing, replace the 1/4 in. NPT plug with an oil-mist fitting provided by the
oil-mist system manufacturer.
The 1/2 in. NPT connections remains plugged because it is not required in the oil-mist
system.
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.
NOTICE:
• The mechanical seal must have an appropriate seal-flush system. Otherwise, excess heat
generation and seal failure can occur.
• Cooling systems such as those for bearing lubrication and mechanical-seal systems must
be operating properly to prevent excess heat generation, sparks, and premature failure.
• Sealing systems that are not self-purging or self-venting, such as plan 23, require manual
venting prior to operation. Failure to do so will result in excess heat generation and seal
failure.
Shipping
Pumps may be shipped with or without a mechanical seal installed.
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.
Installation, Operation, and Maintenance Manual 41