Finish Thompson MSVKC Series - Manual (Page 5)

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17. After the housing is secure, insert a screw driver into the suction
and push down on the front of the first stage impeller assembly to
completely seat the drive shaft (item 23) into the 2nd stage impeller
(item 18). Push firmly on all three areas separated by the front spindle
support in the suction.
Caution: Do not press on the gray thrust ring.
18. Slide the lock ring (item 11) over the drive magnet assembly and past
the corresponding flats on the column extension (motor adapter if 12”
pump) making sure the smaller inside diameter side is toward the
motor. Lubricate the external threads on the column extension (motor
adapter on 12” models), the o-rings, and the internal threads on the
barrier column section. Gripping the assembled pump end firmly, slide
it down over the drive hub until the threads touch, and screw the pump
end onto the column section. Use a strap wrench to tighten until there
is no gap between the sections and the flats are parallel. Pull the lock
ring up. Match with corresponding flats and snap into place.
Caution: Do not allow your fingers to get between the drive hub and
the barrier column section during assembly.
19. Rotate the motor fan and listen/feel for drive hub rubbing (recheck
drive hub setting) or the first stage impeller (item 19) rubbing on the
housing (recheck step 17).
20. Reinstall the pump into the system according to the installation instructions.
GeneRal notes
1. Do not pump liquids containing metal fines.
2. If magnets decouple, stop the pump immediately. The rare earth magnets
used in this pump are more resistant to demagnetization, but operating the
pump with the magnets decoupled will eventually weaken the magnets.
3. Plastic pumps will expand and contract with temperature so periodically
check and hand tighten screws.
4. Use a chemically compatible thread lubricant on threads of column sections.
5. The setting of the drive magnet dimension is critical. Failure to properly set
the dimension may result in decoupling or damage to pump components.
6. An information sticker is attached to the motor adapter section or the
mounting plate. The first line is the model number, and the second line
is the serial number.
7. The pump will contain various numbers of shaft bearings (item 28)
based on the length of the pump as follows:
18” pump = (1) shaft bearings
24” pump = (2) shaft bearings
30” pump = (3) shaft bearings
36” pump = (4) shaft bearings
42” pump = (5) shaft bearings
48” pump = (6) shaft bearings
54” pump = (7) shaft bearings
60” pump = (8) shaft bearings
8. Due to the hermetically sealed design, the pump will displace liquid
as follows:
18” pump = approximately 1-1/4 gallons (4.73 liters)
Add approximately 1 quart (.95 liter) per column section.
E.G. 24” pump = 1-1/2 gallons (5.68 liters)
9. 18” pumps do not have column extensions.
10. Largest diameter impeller is always closest to motor.