Installing The Pump; Pump Location; Foundation - Grundfos CR Installation And Operating Instruction Manual

6. Installing the pump

Warning
Do not energize pump until properly installed.

6.1 Pump location

The pump should be located in a dry, well-ventilated area which is
not subject to freezing or extreme variation in temperature.
Care must be taken to ensure 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.
For open systems requiring suction lift the pump should be
located as close to the water source as possible to reduce piping
losses.

6.2 Foundation

Concrete or similar foundation material should be used to provide
a secure, stable mounting base for the pump.
See table of 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).
Pump type
in
CR 1s, 1, 3, 5 3 15/16
CRI, CRN 1s 1, 3, 5 3 15/16
CR 10, 15, 20 5 1/8
CRN 10, 15, 20 5 1/8
CR 32 6 11/16
CRN 32 6 11/16
CR 45,64 7 1/2
CRN 45,64 7 1/2
CR(N) 90 7 13/16
CR(N) 120, 150 10 13/16
10
L
1
L
2
L1 L2
mm in 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
Fig. 4 Pump position
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.
Note: Care should be taken to ensure that the vent plug is
located in the uppermost position.
Isolating valves should be fitted 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
in mm in
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 ø
mm in 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