Intended Use - Grundfos CU 301 Notice D'installation Et De Fonctionnement

Maximum head at maximum flow and minimum head
at no flow can be found in the following table:
Min. head at Q
= 0 m
Pump type 3000 min
[m] / [feet]
SQE 1-35 18 / 59
SQE 1-50 28 / 91
SQE 1-65 37 / 121
SQE 1-80 46 / 151
SQE 1-95 56 / 184
SQE 1-110 65 / 213
SQE 1-125 74 / 243
SQE 1-140 81 / 266
SQE 1-155 92 / 302
SQE 2-35 19 / 62
SQE 2-55 29 / 95
SQE 2-70 38 / 125
SQE 2-85 47 / 154
SQE 2-100 56 / 184
SQE 2-115 66 / 217
SQE 3-30 15 / 49
SQE 3-40 24 / 79
SQE 3-55 31 / 102
SQE 3-65 39 / 128
SQE 3-80 47 / 154
SQE 3-95 55 / 180
SQE 3-105 62 / 203
SQE 5-15 7.7 / 25
SQE 5-25 15 / 49
SQE 5-35 23 / 75
SQE 5-50 30 / 98
SQE 5-60 38 / 125
SQE 5-70 45 / 148
SQE 7-15 8.6 / 28
SQE 7-30 18 / 59
SQE 7-40 27 / 89
10
Max. head at Q
3
/h, = Q ,
max
-1 -1
10,700 min
[m] / [feet]
29 / 86
44 / 131
59 / 177
75 / 222
90 / 270
105 / 315
120 / 360
136 / 405
151 / 450
35 / 105
54 / 164
71 / 215
88 / 267
108 / 328
128 / 390
26 / 75
42 / 123
56 / 164
70 / 205
84 / 246
98 / 287
113 / 328
11 / 36
23 / 77
36 / 117
48 / 159
61 / 200
73 / 240
9 / 33
23 / 82
37 / 126

3.3 Intended use

DANGER
Electric shock
Death or serious personal injury
- Install the product horizontally on a flat
surface to allow any condensed water
inside the product to escape.
CU 301 is for use only with Grundfos SQE pumps
incorporating electronic power factor correction
(PFC). The system maintains a constant pressure
within the maximum pump performance in spite of a
varying water consumption. The pressure is
registered by means of the pressure sensor, which
transmits a 4-20 mA signal to CU 301. CU 301
adjusts the pump performance accordingly to
maintain a constant pressure by changing the pump
speed. It is possible to connect an operating relay for
indication of pump operation. The product is
designed for outdoor use.