Grundfos Control MPC Serie Manual De Instrucciones página 67

8.7.68 Fault, feedback sensor (4.4.10)
Fig. 120 Fault, feedback sensor
Description
You can set how the system is to react if the primary sensor fails.
Setting range
• Stop (without delay)
• Stop (with delay)
• Min.
• Max.
• User-defined
• Operating mode "Local"
• Emergency run
• Reset: Manual or Auto.
Setting via the operating panel
• Settings > Monitoring functions > Fault, feedback sensor.
1. Select reaction in case of a fault in the primary sensor.
2. Select resetting: Manual or Auto.
8.7.69 Non-return valve (4.4.11)
Fig. 121 Non-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".
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