Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - Manual (Page 39)

APPENDIX VIII
INPRO Labyrinth Oil Seal Installation Instructions
Description of Operation
The INRP VBXX-D ® Labyrinth Oil Seal is specially
designed to protect pump bearings from lubrication
starvation as well as environmental contamination.
The bearing is made up of three basic parts: the rotor
(1), stator (2), and VBX
®
Ring (3). The rotor (1) fits
over the shaft and is held in place by an elastomeric
drive ring (4). The drive ring causes the rotor to turn
with the shaft and provides a positive, static seal
against the shaft. There is no metal-to-metal contact,
therefore, no friction or wear concerns.
Intallation Procedures
l
! CAUTION
The INPRO VBX is a one piece design. Do not
attempt to separate the rotor (1) from the stator
(2) prior to or during installation.
1. Assemble the power end per the instructions in
Section 6 - Disassembly and Reassembly.
l
! CAUTION
The edges of the keyway can be sharp. Failure
to cover the keyway with tape may result in a
cut o-ring and a damaged seal.
2. Wrap some electrical tape around the coupling
end of the shaft to cover the keyway.
NOTE: The smooth surface of the electrical
tape provides an excellent surface to slide the
rotor O-ring over.
3. Lightly lube the shaft and rotor drive ring (4) with
supplied lubricant.
NOTE: Lubricant will aid in the installation
process. If used, be sure the lubricant is
compatible with the O-ring material and plant
standards.
4. Use an arbor press to install the outboard INPRO
VBXX-D ® into the bearing cover with the expulsion
port (6) at the 6 o'clock position. Press it only as far
as the beginning of the stator location ramp (9) and
avoid angular misalignment. There is nominal 0.002"
interference fit. Discard any residual material from
the stator gasket (5).
For STX Units
5.
Press the inboard seal over the shaft into the
bearing frame as described in Step 4 above.
For All Other Units
5.
Once the frame adapter is installed on the
bearing frame, press the inboard seal over the shaft
and into the adapter as descbied in Step 4 above.
ANSIFAM IOM - 5/08
141
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Fig. VIII-1