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13. Technical data
13.1 Operating conditions
13.1.1 Maximum total head
Pump type
CMBE 1-44
CMBE 1-75
CMBE 3-30
CMBE 3-51
CMBE 3-62
CMBE 3-93
CMBE 5-62
CMBE 10-54
13.1.2 Pressure
Min. inlet pressure (relative)
without pressure switch
Min. inlet pressure with pres-
sure switch
Max. outlet pressure
Max. operating pressure
13.1.3 Ambient temperature during storage and
transportation
-30 to +60 °C.
13.1.4 Ambient temperature during operation
-20 to +50 °C.
The motor can operate with the rated power output
(P2) at 50 °C, but continuous operation at higher
temperatures will reduce the expected product life. If
the motor is to operate at ambient temperatures
between 50 and 60 °C, an oversized motor must be
selected. Contact Grundfos for further information.
See section Installation altitude.
Related information
5.1 Installation altitude
13.1.5 Liquid temperature
0-60 °C.
Heat protection:
> 80 °C: The pump will stop.
< 50 °C: The pump will start automatically.
13.1.6 Sound pressure level
≤ 55 dB(A).
20
Max. head[m]
44
75
30
51
62
93
62
54
[bar]
[MPa]
-0.1
-0.01
1
0.1
10
1
10
1
13.1.7 Start/stop frequency
Max. 100/h.
13.2 Supply voltage
1 x 220-240 V - 10 %/+ 10 %, 50/60 Hz - 2 %/+ 2 %,
PE.
13.3 Overload protection
The overload protection of the E-motor has the same
characteristic as an ordinary motor-protective circuit
breaker. As an example, the E-motor can stand an
overload of 110 % of rated current for 1 minute.
13.4 Cable requirements
1 x 200-230 V
Power [kW]
0.25 - 1.5
1.5 - 2.5
3 x 380-500 V
Power [kW]
0.25 - 2.2
1.5 - 2.5
3.0 - 4.0
3 x 220 V, 3 x 380-500 V
Power [kW]
1.1 - 1.5
1.5 - 2.5
2.2 - 4.0
Conductor types
Stranded or solid copper conductors.
Conductor temperature ratings
Temperature rating for conductor insulation: 60 °C
(140 °F).
Temperature rating for outer cable sheath: 75 °C (167
°F).
Cross-section
2
[AWG]
[mm
]
16-12
Cross-section
2
[AWG]
[mm
]
16-12
2.5 - 4
12-11
Cross-section
2
[AWG]
[mm
]
16-12
2.5 - 4
12-11
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