Goulds Pumps 3393 - IOM - Manual (Page 52)

Maintenance
3393 Ball Bearings
Pump size
2.5x4-8 4x5-10 5x6-11 6x8-13
2.5x5-8 4x6-10 5x8-11 5x10-13
Initial Fill per Bear- 3.4 / 1.6 3.4 / 1.6 5.3 / 2.5 5.3 / 2.5
ing Housing - Oil
(US pt, l)
Bearing - Driver End
7408 BCBM 7409 BCBM 7311 BECBM 7214 BECBM
Bearing - Outboard SiC/SiC SiC/SiC SiC/SiC SiC/SiC
(ES) 2
Bearing - Outboard 6408 6409 6311 6214
(RS)
Maximum permis-
180 / 82 180 / 82 180 / 82 180 / 82
sible surface tem-
perature measured
at the 12 o'clock
(top of bearing
housing) position
(
O F, O C)
Mechanical-seal maintenance
WARNING:
The mechanical seal used in an ATEX or 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.
Before you start the pump
Check the seal and all flush piping.
Disassembly
Introduction
The section on disassembly will address the bearings, mechanical seal, balance drum and
balance drum stator as well as the complete pump. Where the disassembly is the same for end
and radial suction pumps, no distinction will be made. When the disassembly is different, it will
be identified for either end or radial suction configuration.
2 Product lubricated bearing
50 Model 3393 Installation, Operation, and Maintenance Manual