Grundfos Control MPC-Serie Installationsanleitung Seite 65

8.7.64 Non-return valve (4.4.11)
Fig. 116Non-return valve
Description
The function enables CU 352 to detect if a "Non-return valve" is
leaking or faulty. A small leakage will after five accumulated
incidents result in a warning. A faulty NRV will instantly result in
an alarm and pump stop. In this case the motor is not able to
overcome the backflow through the pump with the faulty NRV.
The function is only valid for a MPC-E system with
MGE motors model G, H, I or J.
Setting range
• Monitoring, non-return valve: Enabled or Disabled.
• Automatic resetting of alarm: Enabled or Disabled.
Setting via the operating panel
• Settings > Monitoring functions > Non-return valve
1. Enable the function.
2. Select if "Automatic resetting of alarm" is to be "Disabled".
Factory setting
The function is "Enabled".
8.7.65 Functions, CU 352 (4.5)
Fig. 117Functions, CU 352
Description
Make the basic settings of CU 352 in this submenu.
CU 352 comes with most of these settings, or they are made at
startup and normally not to be changed.
The service language, British English, can be selected for service
purposes. If no buttons are touched for 15 minutes, the display
returns to the language selected at startup or to the language set
in Display language (4.5.1).
If the service language is selected, the wrench
symbol is to the right in the top line of all displays.
Setting range
• Activation of service language, British English.
• Re-activation of startup wizard. (After startup, the wizard is
inactive.)
• Selection of "Display language".
• Selection of display units.
• Setting of "Date and time".
• Selection of password for menu "Operation" and "Settings".
• Setting of "Ethernet" communication.
• Setting of "GENIbus number".
• Reading of "Software status".
65