Confirming Proper Application; Checking Operating Conditions - Grundfos CR Installation And Operating Instruction Manual

4. Confirming proper application

Compare the pump's nameplate data or its performance curve
with the application in which you plan to install it. Will it perform
the way you want it to perform? Also, make sure the application
falls within the following limits.
Type Designed to pump
Hot and chilled water, boiler feed, condensate
CR
return, glycols and solar thermal fluids.
Deionized, demineralized and distilled water.
Brackish water and other liquids unsuitable for
CRI/CRN
contact with iron or copper alloys. (Consult
manufacturer for specific liquid compatibilities.)
High pressure washdown, reverse osmosis, or other
CRN-SF
high pressure applications.
Salt water, chloride based fluids and fluids approved
CRT
for titanium.

5. Checking operating conditions

5.1 Fluid temperatures
s
Pump
CR(I)(N) 1s, 3, 5, 10, 15, and 20
*CR(N) 32, 45, 64, and 90
*CR(N) 120 and 150
(up to 60 hp)
CR(N) 120 and 150
(75 and 100 hp)
CRT 2, 4, 8, 16
CRN-SF
with Cool-Top™
All motors are designed for continuous duty in +104 °F (+40 °C)
ambient air conditions. For higher ambient temperature
conditions consult Grundfos.
* xUBE Shaft Seals are recommended for temperatures above
+200 °F. Pumps with hybrid shaft KUHE seals can only operate
up to +200 °F (+90 °C). Pumps with xUUE shaft seals can be
operated down to –40 °F (–40 °C) (where "x" is the seal type).
8
5.2 Minimum inlet pressures
All CR, CRI, CRN
CRN-SF
5.3 Maximum inlet pressures
CR, CRI, CRN 1s
CR, CRI, CRN 1
CR, CRI, CRN 3
CR, CRI, CRN 5
CR, CRI, CRN 10
CR, CRI, CRN 15
Fluid
Temperatures
CR, CRI, CRN 20
–4 to +248 °F
(–20 to +120 °C)
CR, CRN 32
–22 to +248 °F
(–30 to +120 °C)
–22 to +248 °F
CR, CRN 45
(–30 to +120 °C)
+32 to +248 °F
(0 to +120 °C)
–4 to +248 °F
CR, CRN 64
(–20 to +120 °C)
–4 to +221 °F
(–15 to +105 °C)
CR, CRN 90
up to +356 °F
(+180 °C)
CR, CRN 120
CR, CRN 150
CRT 2
CRT 4
CRT 8
CRT 16
CRN-SF
* while pump is off or during start-up
** during operation
Pump Type/ 50 Hz
Connection Stages
2 to 36
2 to 36
2 to 29
31 to 36
3 to 16
18 to 36
1 to 6
7 to 22
1 to 3
4 to 17
1 to 3
4 to 17
1-1 to 4
5-2 to 10
11 to 14
1-1 to 2
3-2 to 5
6-2 to 13-2
1-1 to 2-2
2-1 to 4-2
4-1 to 8-1
1-1 to 1
2-2 to 3-2
3 to 6
1 to 2-1
2 to 5-1
6-1 to 7
1-1 to 1
2-1 to 4-1
5-2 to 6
2 to 11
13 to 26
1 to 12
14 to 22
1 to 20
2 to 16
all
NPSHR + 2 feet
29 psi (2 bar)
60 Hz Max.
Stages psi/bar
2 to 36 145 / 10
27 217 / 15
2 to 36 145 / 10
27 217 / 15
2 to 15 145 / 10
17 to 25 217 / 15
2 to 9 145 / 10
10 to 24 217 / 15
1 to 5 116 / 8
6 to 18 145 / 10
1 to 2 116 / 8
3 to 12 145 / 10
1 116 / 8
2 to 10 145 / 10
1-1 to 2 58 / 4
3-2 to 6 145 / 10
7-2 to 11-2 217 / 15
1-1 to 1 58 / 4
2-2 to 3 145 / 10
4-2 to 8-1 217 / 15
1-1 58 / 4
1 to 2-1 145 / 10
2 to 5-2 217 / 15
58 / 4
1-1 to 1 145 / 10
2-2 to 4-1 217 / 15
1-1 to 1 145 / 10
2-2 to 3 217 / 15
4-1 to 5-2 290 / 20
1-1 145 / 10
1 to 2 217 / 15
3-2 to 4-2 290 / 20
2 to 6 145 / 10
7 to 18 217 / 15
1 to 7 145 / 10
8 to 16 217 / 15
1 to 16 145 / 10
2 to 10 145 / 10
all 72 / 5*
362 / 25**