Grundfos CR 10 User Manual

15
English (US)
8.8 Bypass
Install a bypass in the outlet pipe if there is any risk that the pump
may operate against a closed valve in the outlet line. Flow
through the pump is required to ensure that adequate cooling and
lubrication of the pump is maintained. See 7.3 Minimum inlet
pressures for minimum flow rates.
Elbows should be at least 12" from the bypass opening to prevent
erosion.
Fig. 7 Recommended bypass arrangement
Fig. 8 Optional bypass arrangement
Fig. 9 Optional bypass arrangement for CR, CRN 32, 45 and
64
TM04 3926 3613TM04 3909 3613TM04 3924 0409
Outlet
Inlet
Bypass line
B
y
p
a
s
s
o
p
e
n
i
n
g
Outlet
Bypass line
Bypass
opening
Inlet
Bypass line
Bypass
opening
Inlet
Outlet

Grundfos CR 10 Specifications

General

Type	Centrifugal Pump
Liquid Temperature	-20°C to +120°C
System Pressure	Max 25 bar
Pump Housing	Stainless Steel
Impeller	Stainless Steel
Motor Type	Asynchronous motor
Frequency	50/60 Hz
Protection Class	IP55
Insulation Class	F
Max Head	Up to 160 m
Motor Power	0.37 kW
Approvals	CE, EAC