Mutator Rotation Check; Mechanical Seals; Single Mechanical Seal; Double Mechanical Seal - SPX Votator II Instruction Manual

Installation

Mutator Rotation Check

Mechanical Seals

Figure 2 - Single Mechanical Seal
Figure 3 - Double Mechanical Seal
Page 10
Waukesha Cherry-Burrell
• Refrigeration Valves:
liquid feed solenoid valve
dual pressure regulating valve
level switch
hot gas pressure regulating valve
hot gas solenoid valve
Freeze Protection Components (if furnished):
•
current sensing relay
instrument current transformer
digital current indicator
Correct mutator shaft rotation is counterclockwise when looking
down the unit from the drive end (indicated by a sticker located
near the motor). To check for correct rotation, momentarily start
the drive motor and observe the rotation of the shaft in the back
of the unit.
If rotation of the shaft is incorrect, the drive motor is wired
incorrectly. Have a Licensed Electrician change the wiring so the
rotation of the shaft is correct.
The Votator II is furnished with either a single or double
mechanical seal on both ends of the mutator shaft. Units
furnished before 2005 were installed with either a single or
double mechanical seal configuration. See "2005 Mechanical
Seal Design" on page 11 for units furnished between 2005 and
2012. See "2012 Mechanical Seal Design" on page 11 for
standard units finished from 2012 to the present. Certain
Votator II units have also been supplied with a special "Ball-lock
Mechanical Seal" or a "Packing Gland" instead. Consult your
order documentation to verify the specific seal configuration for
each Votator II unit.

Single Mechanical Seal

The single mechanical seal is normally not flushed but it can be. It
is shipped with a lip seal (See Figure 2) designed to contain water
or a liquid flush. The spring in the seal must be removed and the
seal reinstalled with the lip in the relief position to allow flushing.
This will minimize any damage to the contact surface on the stub
end of the shaft.
When the single mechanical seal is rotating, there must be
product or water flow to provide cooling to the rotating surfaces to
avoid permanent damage to the seal assembly.
If the seal is flushed, the fluid flow should be in the range of 5 to
10 gallons per hour and not exceed 5 psig. Piping to seals should
be in the bottom of head and out the top and with parallel flow,
never in series.

Double Mechanical Seal

The double mechanical seal is furnished with a primary seal for
product and a secondary seal to contain a steam or water flush.
95-03057 11/2012