Appendix; Seal And Bearing Replacement (Large Vertical Pumps With Stand) - Grundfos KP Instrucciones De Instalación Y Funcionamiento

Appendix

1. Seal and bearing replacement (large vertical pumps with stand)

Large vertical KPV with stand
Fig. 1
DANGER
Moving machine parts
Death or serious personal injury
- Before any inspection, maintenance, service or
repair of the product, make sure the motor controls
are in the "OFF" position, locked and tagged.
WARNING
Overhead load
Death or serious personal injury
- Do not allow anyone to stand near or below the
rotating assembly while it is being lifted.
- The upper bearing is friction fit on the shaft.
If you are lifting the rotating assembly above
ground, pick it up with slings on both sides of the
impeller.
The following procedure works for changing any
component of the rotating assembly (impellers,
Note
Note
sleeves, etc.)
Housing work requires removing the motor.
84
4. Pump housing
1. Close the inlet and outlet water valves.
2. Drain the liquid from the pump.
3. Remove support piece (2).
4. Remove support piece (1).
5. Any shims that are removed from support piece (1) must go
6. Remove the coupling guard (3) but not the motor bracket.
7. Remove the cover assembly on the coupling, then remove the
8. Remove the cap screws from each of the bearing housings
9. Remove the roll pins.
10. To remove the upper pump housing half (4) use two
back in the same location during reassembly.
grid assembly from the coupling halves.
except the screws that connect to the lower pump housing.
Leave those cap screws to hold the rotating assembly in place
when removing the upper pump housing.
3/4 in. diameter threaded rods, 14 in. long, for removing upper
pump housing and 1/2 in. eye bolt in the top of the upper
pump housing. Remove all the pump housing cap screws and
remove the upper pump housing.
3. Coupling guard
(not shown)
1. Support
2. Support