Motor Protection; Emc-Correct Installation; Control Panel - Grundfos RCME Notice D'installation Et De Fonctionnement

8.2 Motor protection

8.2.1 CME 5-4 booster pump
The motor incorporates thermal protection against slow
overloading, blocking and dry running.
8.2.2 SB 3-45 feed pump
The feed pump is protected by a motor-protective circuit breaker
with automatic resetting. The motor-protective circuit breaker is
located inside the control cabinet and has been set from factory.

8.3 EMC-correct installation

In order to ensure an EMC-correct installation, these guidelines
for communication and signal cables must be followed:
• Leave the screen of the cable as close to the connecting
terminals as possible.
• Fix the screen with a cable clamp.
Example of stripped cable with screen
Fig. 5
• Connect the screen of communication and signal cables to
frame at both ends.
• Screws for frame connections must always be tightened
whether a cable is fitted or not.

9. Control panel

1
CU 372 control panel
Fig. 6
8
2
3
5
4
6
7
8
9
10
11
13 12
Button/
Pos. indicator Description
light
1 LCD display
Go to next column in menu structure
Press [>] to go to the next column in the
2 menu structure. If [>] is pressed in the last
column, it changes to the first column to
the left.
Go to help text
Press [?] to display the relevant help text.
All the elements in the display have a
3
selectable help text.
Press [?] again to close the help text
window.
Move up in lists
Press [ ∧ ] to move up in lists.
4
Press [ ∧ ] in the top line of the list to move
to the bottom of the list.
Move down in lists
Press [ ∨ ] to move down in lists.
5
Press [ ∨ ] in the bottom line of the list to
move to the top of the list.
Increase the value of a selected
parameter
6
Press [+] to increase the value of a
selected parameter.
Decrease the value of a selected
parameter
7
Press [-] to decrease the value of a
selected parameter.
Go one display back
Press the button to return to the previous
8
display in the menu.
Press this button to cancel a change.
Return to the "Status" menu
9 Press the button to return to the system
overview display.
Save a value
Use [OK] as Enter button.
10
Also use [OK] to begin the process of
changing a value and to save the change.
Green indicator light (operation)
11 The green indicator light is on when the
power supply has been switched on.
Red indicator light (alarm)
The red indicator light is on if there is an
12
alarm or a warning. The fault can be
identified from the alarm list.
Change the contrast of the display
Press the contrast button to change the
13 display contrast.
Press [+] or [-] to increase or decrease the
contrast.
Active buttons are backlit.