Technical Data; Enclosure Class; Sound Pressure Level 16 Note; Ambient Temperature - Grundfos CM 1 Manual De Instrucciones

11. Technical data

11.1 Enclosure class

• Standard: IP55.
11.2 Sound pressure level
The sound pressure level of the pumps is lower than
70 dB(A).

11.3 Ambient temperature

Self-priming pumps:
Caution
The liquid temperature must not
exceed 60 °C (140 °F).
Maximum ambient
temperature
+55 °C (131 °F)
+50 °C (122 °F)
+45 °C (113 °F)
+40 °C (104 °F)
* Note: Only the stainless-steel variant
(EN 1.4301/AISI 304) is suitable for pumping
liquids with temperatures above +90 °C (194 °F).

11.4 Maximum system pressure and permissible liquid temperature

Material variant
Cast iron
(EN-GJL-200)
Stainless steel
(EN 1.4301/AISI 304)
Stainless steel
(EN 1.4401/AISI 316)
* At liquid temperatures below 0 °C (32 °F), higher
motor outputs may be needed due to increased
viscosity, for instance if glycol has been added to
the water.
** 120 °C applies only if the pump has an AQQE
shaft seal.
*** CM pumps for pumping liquids at temperatures
below -20 °C are available on request. Please
contact Grundfos.
16
Liquid temperature
+90 °C (194 °F)
+100 °C (212 °F)*
+110 °C (230 °F)*
+120 °C (248 °F)*
Shaft seal Permissible liquid temperature*
-20 °C to +40 °C
AVBx
+41 °C to +90 °C
AQQx -20 °C to +90 °C
-20 °C to +40 °C
AVBx
+41 °C to +90 °C
-20 °C*** to +90 °C
AQQx
+91 °C to +120 °C**
-20 °C to +40 °C
AVBx
+41 °C to +90 °C
-20 °C*** to +90 °C
AQQx
+91 °C to +120 °C**
Maximum system
(-4 °F to 104 °F) 10 bar
(105.8 °F to 194 °F)
(-4 °F to 194 °F) 10 bar
(-4 °F to 104 °F) 10 bar
(105.8 °F to 194 °F)
(-4 °F to 194 °F) 16 bar
(195.8 °F to 248 °F) 10 bar
(-4 °F to 104 °F) 10 bar
(105.8 °F to 194 °F)
(-4 °F to 194 °F) 16 bar
(195.8 °F to 248 °F) 10 bar
pressure
(145 psi)
6 bar (87 psi)
(145 psi)
(145 psi)
6 bar (87 psi)
(232 psi)
(145 psi)
(145 psi)
6 bar (87 psi)
(232 psi)
(145 psi)