En
gl
is
h
(G
B)
12
34. Maintenance
The CU 3X2 is maintenance-free during normal use
and operation. It should be cleaned with a wet cloth.
35. Service
The CU 3X2 cannot be serviced. It must be replaced
if faulty. See section
13. Replacing the CU 3X2
.
36. Replacing the CU 3X2
1. Switch off the power supply to the CU 3X2.
2. Switch off the power supply to components with
external supply.
3. Mark the individual conductors with the numbers
of the corresponding terminals.
4. Disconnect all conductors.
5. Remove the CU 3X2 from the panel/cabinet.
6. Fit the new unit as described in section
5. Mechanical installation
.
7. Connect all conductors according to markings.
8. Configure the new CU 3X2 by means of a PC
Tool. See service instructions for the product in
question.
36.1 Replacing the CIM module
See
also section
29
.3
Fitting the CIM module
.
1. Switch off the power supply to the CU 3X2.
2. Switch off the power supply to components with
external supply.
3. Mark the individual conductors with the numbers
of the corresponding terminals.
4. Remove the screws that holds the CIM module.
5. Remove the CIM module from the CU 3X2.
6. Fit the new CIM module.
7. Connect the CIM module as described in the
installation and operating instructions supplied
with the CIM module.
37. Dimensions
Fig. 17
Dimensional sketch
38. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
Subject to alterations.
9
USB port
USB 2.0, type B
10
70
Relay 1
C
71
NO
72
NC
73
Relay 2
C
74
NO
75
NC
* GND is isolated from other earth connections.
Group Terminal Designation
Data
Diagram
74
73
72
70
71
75
TM
04
20
68
19
08
CU 35
2
73
