8 Appendix
8.1 Labyrinth Seal Installation Instructions
8.1.1 Description of Operation
The labyrinth oil seal serves two functions. The first being to exclude environmental contamination from
the power-end. This is accomplished with a series of tight clearance fits between the stationary and rotor.
Any water that manages to enter the seal is eliminated from the seal through a drain slot located at the
six o'clock position when installed.
On the oil side, a series of oil grooves are present to direct any oil between the shaft and stationary back
into the oil sump through a drain slot at the six o'clock position.
Viton® 0-rings are supplied as standard due to their chemical resistance. The stationary uses an 0-ring
to fit the labyrinth seal to the housing. The stator uses an 0-ring to fit the labyrinth to the housing. The
rotor uses an 0-ring to seal along the shaft and to serve as the drive.
8.2 Installation Procedures
CAUTION:
The Goulds labyrinth oil seal is a one piece assembly. Do not attempt to separate the rotor and
stator. Damage to the seal may result.
1.
Assemble the power end per the instructions in Section 6 - Disassembly & Reassembly.
CAUTION:
The edges of the keyway can be sharp. Failure to cover the keyway may result in a cut o-ring
and a damaged seal.
2.
Wrap tape around the coupling end of the shaft to cover the keyway.
NOTICE:
The smooth surface of electrical tape provides an excellent surface to slide the rotor o-ring
over.
Press the seal over the shaft into the thrust bearing housing or thrust bearing end cover by
hand until the shoulder of the seal is seated against the housing/cover.\
NOTICE:
As O-ring lubricant is note required, but can be used if desired. If used, be sure the lubricant is
compatible with the o-ring material and plant standards.
3.
Press the seal over the shaft into the trust bearing housing or thrust bearing end cover by hand unti
he shoulder of the seal is seated against the housing/cover.
NOTICE:
An o-ring lubricant is not required, but can be used if desired. If used, be sure the lubricant is
compatible with the o-ring material and plant standards.
4.
Once the frame adapter is installed on the motor, press the seal over the shaft into the frame adapt-
er by hand until the shoulder of the seal is seated against the adapter.
8 Appendix
3196CC Installation, Operation and Maintenance Instructions
69