Pentair NOCCHI FREQUENCY CHANGER Instrucciones Originales página 29

Vice versa, if YES is entered, the following option is displayed
PROGR. MENU
# DIRECT THRESHOLDS
Press key (20)
ENTE R
Bar PO: 2
Max04.2 Min03.7
For every pump successive to the first, it is possible to establish the pressure value appropriate for startup (Min.) and for stop
(Max.). The minimum pressure must be lower than the value ascribed to the SET POINT. The maximum pressure must be higher
than SET POINT value and lower or equal to the STOP THRESHOLD VALUE. The minimum pressure ascribed to a pumps must be
lower than the maximum one. The values ascribed to each pump are interdependent and, except in particular needs of the plant,
they can be the same for all pumps directly operated. Example
STOP THRESHOLD
MAX PRESSURE
SET POINT
MIN PRESSURE
NOTA
The number of pumps that do not compose the group has no connection with the numbering used by the microprocessor program.
In fact the program logic considers as pump 1 the one that leaves first; pump 2 the one that leaves for second and so on. The choice
of the pump that leaves first (that can be n.3 or n.4 or n.5 or n.2 or n.1) is carried out by the section of the program that manages
the logic of inversions and commands.
PROG MENU.
9
DIRECT TEMP.
By press key (20)
ENTE R
P.2 TEMPORIZA TION
START 8 STOP 0
Line n.1 TEMPORIZATION P.2
Description non modifiable
Line n.2 START XX
Indicates delay time, in seconds, for starting the second pumps in the presence of suitable pressostatic conditions for startup.
• MINIMUM: 0 tenth of seconds
• MAXIMUM: 99 tenth of seconds
BAR
5,5
-
5,0
-
the following option is displayed:
9a
PUMP 2 PUMP 3
- -
5,3 5,3
- -
4,7 4,7
GB
PUMP 4 PUMP 5
- -
5,3 5,3
- -
4,7 4,7
25