ENGLISH
47
Both with sensor operation and with pressure switch operation there will be an
automatic exchange of the order of switching on the two pumps at each start,
or an exchange between the two pumps every 24 hours, depending on the regulation
chosen in the DS_A2.
The two pumps will always be started alternately with a minimum interval of
2 seconds between one and the other.
12. FILLING FUNCTION
In filling, the floats, if present, are positioned in this order:
12.1 Operation with 2 floats
In operation with 2 floats, Pump P1 starts with the closed contact of the float B, while Pump P2 starts with the
closed contact of the float C.
Both pumps stop with the open contact of the float B.
The following table sums up the behaviour described:
Sequence Pump P1
Pump P2
START
Float B = NC
Float C = NC
STOP
Float B = NO
Float B+C = NO
12.2 Operation with 3 floats
In operation with 3 floats, Pump P1 starts with the closed contact of the float B, while Pump P2 starts with the
closed contact of the float C.
The pumps stop with the open contact of the floats A+B+C which controls the maximum level for both.
The following table sums up the behaviour described:
Sequence Pump P1
Pump P2
START
Float B = NC
Float C = NC
STOP
Float A+B+C = NO
Float A+B+C = NO
ELECTRIC
PANEL
Electric probes