Xylem Lowara SM30 Manual De Instalación, Funcionamiento Y Mantenimiento página 38

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6.2.2 PUMP START/STOP THRESHOLDS
Note: The THRESHOLDS parameters can be set only with a system with a pressure or level sensor.
The thresholds must be set considering the hydraulic performances of the pump (curve Q-H) and of
the type of system.
Phas Display
e
0 THRESHOLDS
1 P1 STOP THRESH.
2 P1 START THRESH.
3 P2 STOP THRESH.
4 P2 START THRESH.
5 P3 STOP THRESH.
6 P3 START THRESH.
6.2.3 PUMPS STARTING ROTATION
Phas Display
e
0 PUMPS ROTATION
1 PUMPS ROTATION
2 PUMP SEQUENCE
3 SWITCH INTERVAL
NOTE: The jockey pump, if present, is not subject to rotation and is started first, it remains on when
the duty pumps start and it switches off last.
38
Comment
Application with pressure / level
Stop (OFF) threshold (pressure/level)
for pump 1
Start (ON) threshold (pressure/level)
for pump 1
Stop (OFF) threshold (pressure/level)
for pump 2
Start (ON) threshold (pressure/level)
for pump 2
Stop (OFF) threshold (pressure/level)
for pump 3
Start (ON) threshold (pressure/level)
for pump 3
Comment
Enable pump rotation.
Set YES to activate pump rotation. Automatic
pump rotation takes place each time the set is
restarted after stopping in automatic mode.
The jockey pump, if present, is not subject to
rotation, so it always starts first.
Insert the duty pump that you want to start
first after electrically switching on the set.
In systems with a jockey, as this is P1, the
first duty pump that can be set can only by P2
or P3.
If automatic pump rotation does not take
place (the set has never been able to stop),
after the set time a "forced" rotation of the
duty pumps is performed (excluding the
jockey).
To disable this function set 0h
Field Default
0.. FS +3.50 bar
0.. FS +2.70 bar
0.. FS +3.40 bar
0.. FS +2.60 bar
0.. FS +3.30 bar
0.. FS +2.50 bar
Field Default
YES YES
NO
P1
P2
P3
0 h
1÷12 h
P1
0 h