Technical Data; Motor Cooling Requirements; Maximum Water Temperatureminimum Velocity/Flow Past The Motor - Grundfos SP Serie Instrucciones De Instalación Y Operación

10. Technical data

10.1 Motor cooling requirements

10.1.1 Maximum water temperature -
minimum velocity/flow past the motor
Maximum water temperature - minimum velocity/flow past the motor
Minimum well
Motor type
MS 402 / MS 4000
MS 402 / MS 4000
MS 6000C (T40)
MS 6000C (T60)
MMS 6 (T30)
MMS 6 (T50)
MMS 8000 (T30)
MMS 6 (T50)
MS 10000
(175, 200 hp)
MS 10000
(250 hp)
ft/s = feet per second
* A flow inducer or flow sleeve must be used if the water enters the well above the motor or if there is
insufficient water flow past the motor.
Note: For MMS6, 50 hp and MMS 8000, 150 hp, the maximum liquid temperature is 9 °F (5 °C) lower
than the values stated in the table. For MMS 10000, 250 hp, the temperature is 18 °F (10 °C) lower.
32
casing or Minimum
sleeve velocity
diameter
[in. (mm)] [ft/s (m/s)]
4 (102) 0.00 (0.00)
4 (102) 0.25 (0.08)
6 (152) 0.50 (0.15)
6 (152) 3.30 (1.00)
6 (152) 0.15 (0.05)
6 (152) 0.15 (0.05)
8 (203) 0.50 (0.15)
8 (203) 0.50 (0.15)
10 (254) 0.50 (0.15)
10 (254) 0.50 (0.15)
Maximum temperature of
Minimum
flow
Vertical
installation
3
[gpm (m /h)] [°F (°C)]
0.0 (0.0) 86 (30)
1.2 (0.27) 104 (40)
9 (2) 104 (40)
30 (6.8) 140 (60)
13 (3) 86 (30)
13 (3) 122 (50)
25 (5.7) 86 (30)
25 (5.7) 122 (50)
55 (12.5) 86 (30)
41 (9.3) 68 (20)
pumped liquid
Horizontal
installation
[°F (°C)]
Flow sleeve
recommended*
104 (40)
104 (40)
140 (60)
86 (30)
122 (50)
86 (30)
122 (50)
86 (30)
68 (20)