11.4 The performance is unstable and there is a green indicator light
Cause
The pump inlet pressure is too low.
•
The inlet pipe is partly blocked by impurities.
•
There is a leakage in the inlet pipe.
•
There is air in the inlet pipe.
Remedy
•
Check the inlet conditions of the pump.
•
Remove and clean the inlet pipe.
•
Remove and repair the inlet pipe.
•
Vent the inlet pipe and the pump.
11.5 The pump is not running and the motor shows a red indicator light
Cause
The motor is overheated.
Remedy
•
Check the inlet conditions of the pump.
•
Remove and clean the inlet pipe.
•
Remove and repair the inlet pipe.
•
Vent the inlet pipe and the pump.
Cause
The sensor is defective.
Remedy
•
Replace the sensor.
Cause
Cause unknown.
Remedy
•
Contact Grundfos or an authorised service workshop.
12. Technical data
Operating conditions
Max. head
100 m
Max. flow rate
16 m
3
/h
Min. inlet pressure (relative)
-0.1 bar (-0.01 MPa)
Max. outlet pressure
10 bar (1 MPa)
Max. operating pressure
10 bar (1 MPa)
Min./max. ambient temperature
-20 °C/+55 °C
Min./max. storage temperature
-30 °C/+60 °C
Liquid temperature
0-60 °C
Heat protection:
> 80 °C: The pump will stop.
< 50 °C: The pump will start automatically.
Sound pressure level
≤ 55 dB(A)
Start/stop frequency
Max. 100/h
Electrical data
Supply voltage
1 x 200-240 V
Power connection
Plug or terminal box
Leakage current per pump
~ 2.5 mA (AC)
Leakage current for CMBE TWIN (two pumps running)
≥ 5.0 mA (AC)
Further electrical data
CMBE TWIN 3-30 CMBE TWIN 3-62 CMBE TWIN 3-93 CMBE TWIN 5-31 CMBE TWIN 5-62
Max. current for both pumps combined
[A]
13.4 - 11.2
13.4 - 11.2
18.2 - 13.4
13.4 - 11.2
1.2 - 13.4
Max. power for both pumps combined
[W]
1336
2420
3440
2180
3440
27
English (GB)
