Grundfos CRN Series - Reduced Performance or No Water Delivery; Excessive Pump Cycling

Technical data
27
All dimensions in inches unless otherwise noted.
*Oval flanged pump B1 and B1+B2 dimension is one inch less than ANSI flanged pump and weight is approximately 9 lbs. less.
• Available
TM03 1450 2205
7/8"
M10 x 40
B2
G 1/2 PLUG
3"
2"
13/16"
B1
5 11/16"
3 15/16"
6 5/16"
7 1/16"
8 11/16"
4 x ø1/2"
WITH 1/4"TAP
FOR GAUGE/
SENSOR
PRIMING
PORT (G 1/2)
DISCHARGE
SUCTION AND
1"NPT (F)
PLUG (G 1/2)
DRAIN
D2
D1
TM03 1451 2205
G 1/2 PLUG
B1
WITH 1/4"TAP
FOR GAUGE/
SENSOR
PRIMING
PORT (G 1/2)
DISCHARGE
SUCTION AND
1 1/4"250 lb.R.F.
PLUG (G 1/2)
DRAIN
ø1 3/8"
ø5 1/2"
3"
13/16"
5 9/16"
3 15/16"
9 7/8"
ø3 15/16"
ø3 1/2"
7 1/16"
8 11/16"
4 x ø1/2"
3/4"x1"
B2
D2
D1
Pump type
P2
[hp]
Ph. Oval*
ANSI dimensions [inch]
Ship Wt.
[lbs.]
B1
TEFC
D1 D2 B1+B2
CR 1s-2
1/3
1• 11.97
6.19 5.18 21.26 69
3• 11.97
5.55 4.57 19.41 67
CR 1s-3
1/3
1• 11.97
6.19 5.18 21.26 69
3• 11.97
5.55 4.57 19.41 67
CR 1s-4
1/3
1• 12.68
6.19 5.18 21.97 70
3• 12.68
5.55 4.57 20.12 68
CR 1s-5
1/3
1• 13.39
6.19 5.18 22.68 71
3• 13.39
5.55 4.57 20.83 69
CR 1s-6
1/2
1• 14.09
6.19 5.18 23.38 75
3• 14.09
5.55 4.57 21.53 70
CR 1s-7
1/2
1• 14.80
6.19 5.18 24.09 76
3• 14.80
5.55 4.57 22.24 71
CR 1s-8
1/2
1• 15.51
6.19 5.18 24.80 77
3• 15.51
5.55 4.57 22.95 72
CR 1s-9
3/4
1• 16.22
6.19 5.18 26.13 82
3• 16.22
5.55 4.57 23.66 73
CR 1s-10
3/4
1• 16.93
6.19 5.18 26.84 83
3• 16.93
5.55 4.57 24.37 74
CR 1s-11
3/4
1• 17.64
6.19 5.18 27.55 84
3• 17.64
5.55 4.57 25.08 75
CR 1s-12
3/4
1• 18.35
6.19 5.18 28.26 85
3• 18.35
5.55 4.57 25.79 76
CR 1s-13
1
1• 19.06
7.19 5.73 30.25 101
3• 19.06
5.55 4.57 26.50 77
CR 1s-15
1
1• 20.47
7.19 5.73 31.66 103
3• 20.47
5.55 4.57 27.91 78
CR 1s-17
1 1/2
1• 21.89
7.19 5.73 33.57 107
3• 21.89
5.55 4.57 30.51 84
CR 1s-19
1 1/2
1- 23.31
7.19 5.73 34.99 109
3- 23.31
5.55 4.57 31.93 86
CR 1s-21
1 1/2
1-
24.72
7.19 5.73 36.40 111
3- 24.72
5.55 4.57 33.34 88
CR 1s-23
1 1/2
1- 26.14
7.19 5.73 37.82 113
3- 26.14
5.55 4.57 34.76 90
CR 1s-25
2
1- 27.56
7.19 5.73 40.12 126
3- 27.56
7.01 4.33 38.78 116
CR 1s-27
2
1- 28.98
7.19 5.73 41.54 127
3- 28.98
7.01 4.33 40.20 118
CR 1s