Service; Technical Data; Enclosure Class; Sound Pressure Level - Grundfos CM Instrucciones De Instalación Y Funcionamiento

11. Service

If a pump has been used for a liquid which is
injurious to health or toxic, the pump will be
classified as contaminated.
Before returning the pump to Grundfos for service, the safety
declaration at the end of these instructions must be filled in by
authorized personnel and attached to the pump in a visible
position.
If Grundfos is requested to service the pump, it must be ensured
that the pump is free from substances that can be injurious to
health or toxic. If the pump has been used for such substances,
the pump must be cleaned before it is returned.
If proper cleaning is not possible, all relevant information about
the chemical must be provided.
If the above is not fulfilled, Grundfos can refuse to accept the
pump for service.
Possible costs of returning the pump are paid by the customer.
The safety declaration can be found at the end of these instructions.

13. Maximum system pressure and permissible liquid temperature

Material variant
Cast iron
(EN-GJL-200)
Stainless steel
AISI 304 (EN 1.4301)
Stainless steel
AISI 316 (EN 1.4401)
* At liquid temperatures below +32 °F (0 °C), higher motor outputs may be needed due to increased viscosity, for instance if glycol has
been added to the water.
** +248 °F (+120 °C) applies only if the pump has an AQQE shaft seal.
*** CM and CME pumps for liquid temperatures below –4 °F (–20 °C) are available on request. Please contact Grundfos.
10
Shaft seal Permissible liquid temperature*
–4 °F to +104 °F
AVBx
+105 °F to +194 °F
AQQx –4 °F to +194 °F (–20 °C to +90 °C)
–4 °F to +104 °F
AVBx
+105 °F to +194 °F
–4 °F to +194 °F
AQQx
+195 °F to +248 °F
–4 °F to +104 °F
AVBx
+105 °F to +194 °F
–4 °F to +194 °F
AQQx
+195 °F to +248 °F

12. Technical data

12.1 Enclosure class

• Standard: TEFC (IP55).
When the rubber plug is removed the rating
becomes IP34. This applies to both CM and CME
pumps. The use of a cover does not affect the IP
rating.

12.2 Sound pressure level

The sound pressure level of the pumps is lower than 70 dB(A).

12.3 Ambient temperature

Max. ambient temperature
131 °F (+55 °C)
122 °F (+50 °C)
113 °F (+45 °C)
104 °F (+40 °C)
*Note: Only the stainless-steel variants AISI 304 (EN 1.4301)
and AISI 316 (EN 1.4401) are suitable for pumping liquids with
temperatures above +194 °F (+90 °C).
(–20 °C to +40 °C)
(+41 °C to +90 °C)
(–20 °C to +40 °C)
(+41 °C to +90 °C)
(–20 °C*** to +90 °C)
(+91 °C to +120 °C**)
(–20 °C to +40 °C
(+41 °C to +90 °C)
(–20*** °C to +90 °C)
(+91 °C to +120 °C**)
Liquid temperature
194 °F (+90 °C)
212 °F (+100 °C)*
230 °F (+110 °C)*
248 °F (+120 °C)*
Maximum system pressure
145 psi (10 bar)
87 psi (6 bar)
145 psi (10 bar)
145 psi (10 bar)
87 psi (6 bar)
232 psi (16 bar)
145 psi (10 bar)
145 psi (10 bar)
87 psi) (6 bar)
232 psi (16 bar)
145 psi (10 bar)