Installation; Pump Location; Foundation - Grundfos CR Serie Instrucciones De Instalación Y Operación

8. Installation

Warning
Do not turn on the power supply until the pump is
properly installed.

8.1 Pump location

Locate the pump in a dry, well-ventilated, frost-free area which is
not subject to extreme variation in temperature.
Make sure the pump is mounted at least 6 inches (150 mm) clear
of any obstruction or hot surfaces.
The motor requires an adequate air supply to prevent overheating
and adequate vertical space to remove the motor for repair.
In open systems requiring suction lift, locate the pump as close to
the liquid source as possible to reduce friction loss in pipes.

8.2 Foundation

Use concrete or similar foundation material to provide a secure,
stable mounting base for the pump.
See table below for bolt hole center line dimensions for the
various pump types.
Secure the pump to the foundation using all four bolts and shim
pump base to assure the pump is vertical and all four pads on the
base are properly supported (uneven surfaces can result in pump
base breakage when mounting bolts are tightened).
Base and bolt hole center line dimensions
Pump type
[inches]
CR 1s, 1, 3, 5 3 15/16
CRI, CRN 1s 1, 3, 5
3 15/16
CRT 2, 4
CR 10, 15, 20 5 1/8
CRN 10, 15, 20
5 1/8
CRT 8, 16
CR 32 6 11/16
CRN 32 6 11/16
CR 45, 64 7 1/2
CRN 45, 64 7 1/2
CR, CRN 90 7 13/16
CR, CRN 120, 150 10 13/16
12
L
1
L
2
L1 L2
[mm] [inches] [mm]
100 5 11/16 145
100 5 7/8 150
130 6 15/16 176
130 7 7/8 200
170 8 3/4 223
170 8 7/8 226
190 9 3/4 248
190 9 7/8 251
199 10 1/4 261
275 13 9/16 344
Pump position
Fig. 4
The pump can be installed vertically or horizontally. See fig. 4.
Ensure that an adequate supply of cool air reaches the motor
cooling fan. The motor must never fall below the horizontal plane.
Arrows on the pump base show the direction of flow of liquid
through the pump.
To minimize possible noise from the pump, it is advisable to fit
expansion joints on either side of the pump and anti-vibration
mountings between the foundation and the pump.
Make sure the vent plug is located in the
Note
Note
uppermost position.
Fit isolating valves on either side of the pump to avoid draining
the system if the pump needs to be cleaned, repaired or replaced.
4 x ø
B
1
B
2
B1
[inches] [mm] [inches]
7 1/16 180 8 11/16
7 1/16 180 8 11/16
8 7/16 215 10 1/16
8 7/16 215 9 3/4
9 7/16 240 11 3/4
9 7/16 240 11 3/4
10 1/2 266 13 1/16
10 1/2 266 13 1/16
11 280 13 11/16
14 15/16 380 18 9/16
∅
B2
[mm] [inches] [mm]
220 1/2 13
220 1/2 13
256 9/16 13.5
248 1/2 13
298 9/16 14
298 9/16 14
331 9/16 14
331 9/16 14
348 9/16 14
472 11/16 18