Product Manual
Table Of Contents
- 1. SQ, SQE introduction
- 2. SQ, SQE applications
- SQ with pressure switch and pressure tank
- Constant-pressure control with CU 301, residential water supply
- Constant-pressure control with CU 301, irrigation
- Maintaining a constant water table
- Emptying or filling a tank
- Pumping from one tank to another
- Setting of operating parameters
- SQE with manual speed control
- 3. Performance range
- 4. SQ, SQE installation
- 5. Sizing and selection
- 6. Cable sizing
- 7. SQ, SQE curve charts
- 8. SQ, SQE technical data
- 9. SQ, SQE construction
- 10. CU331SP variable frequency drive
- 11. Accessories
- 12. SP introduction
- 13. SP product overview
- 14. SP construction
- 15. SP operating conditions
- 16. How to read the curve charts
- 17. SP curve charts and technical data
- 4" and larger wells
- SP 5S (5 gpm)
- SP 7S (7 gpm)
- SP 10S (10 gpm)
- SP 16S (16 gpm)
- SP 25S (25 gpm)
- SP 35S (35 gpm)
- SP 45S (45 gpm)
- SP 62S (62 gpm)
- SP 77S (77 gpm)
- 6" and larger wells
- SP 85S (85 gpm)
- SP 150S (150 gpm)
- SP 230S (230 gpm)
- SP 300S (300 gpm)
- 8" and larger wells
- SP 385S (385 gpm)
- SP 475S (475 gpm)
- 10" and larger wells
- SP 625S (625 gpm)
- SP 800S (800 gpm)
- SP 1100S (1100 gpm)
- 18. SP electrical data
- 19. Accessories
- 20. Energy consumption
- 21. Cables
- 22. Friction loss tables
- 23. Grundfos Product Center
SP introduction
SQ, SQE, CU 331, and SP
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63
Shaft seal
MS 402
The shaft seal is of the lip seal type characterized by
low friction against the rotor shaft.
The rubber material offers good wear resistance, good
elasticity and resistance to particles, and it is approved
for use in drinking water.
MS 4000
Ceramic/tungsten carbide materials provide the MS
shaft seals with optimum sealing, optimum wear
resistance and long life.
MS 6000C
The MS 6000C shaft seal material is SiC/SiC. The
spring loaded shaft seal is designed with a large
surface and a sand shield. The result is a minimum
exchange of pumped and motor liquids and no
penetration of particles.
Motors, version R, are supplied with a SiC/SiC shaft
seal. Other combinations are available request. See
fig. 60 and fig. 61 for an illustration of shaft seal
components and configuration.
MMS rewindable motors
The standard shaft seal is a SiC/SiC mechanical shaft
seal. The shaft seal is replaceable.
The material features good wear resistance and
resistance to particles.
Together with the shaft seal housing, the sand shield
forms a labyrinth seal, which during normal operating
conditions prevents penetration of sand particles into
the shaft seal.
Fig. 60 Shaft seal, MS 4000
Fig. 61 Shaft seal, MS 6000C
TM00 7306 0412TM03 9225 3607