Grundfos Control MPC Montage- Und Betriebsanleitung Seite 54

8.6.38 Min., max. and user-defined duty (4.3.14)
Min., max. and user-defined duty
Description
The function allows you to let the pumps run in open loop at a set
performance.
Setting range
CU 352 allows you to change between three operating modes:
1. Min. duty (4.3.14.1).
2. Max. duty (4.3.14.2).
3. User-defined duty (4.3.14.3).
For each of these operating modes, you can set the
number of operating pumps and the pump
performance (speed).
Related information
8.6.39 Min. duty (4.3.14.1)
8.6.40 Max. duty (4.3.14.2)
8.6.41 User-defined duty (4.3.14.3)
8.6.39 Min. duty (4.3.14.1)
Min. duty
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Description
In all systems, minimum duty is only possible for variable-speed
pumps.
Setting range
• Number of pumps in operation.
• Speed as percentage (25 to 100 %) for variable-speed pumps.
Setting via the operating panel
• Settings > Secondary functions > Min., max. and user-
defined duty > Min. duty.
Select and set:
• Number of pumps in operation, min. duty.
• Speed.
Factory settings
Number of pumps in operation during min. duty:
Speed as percentage for variable-speed pumps:
1
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