English (GB)
11
7. Control panel
7.1 Elements on the control panel
Fig. 8
GRUNDFOS ALPHA2 control panel
The control panel comprises:
7.2 Display
The display (fig. 8, pos. 1) is on when the power supply has been
switched on.
The display shows the actual pump power consumption in Watt
(integer) during operation.
If a fault is indicated, correct the fault and reset the pump by
switching the power supply off and on.
7.3 Light fields indicating the pump setting
The pump has eight optional settings which can be selected with
the push-button. See fig. 8, pos. 5.
The pump setting is indicated by eight different light fields.
See fig. 9.
Fig. 9
Eight light fields
See section
12. Pump settings and pump performance
information about the function of the settings.
7.4 Light field indicating the status of Automatic Night
SetBack
Light in
(fig. 8, pos. 3) shows that Automatic Night SetBack is
active. See section
7.5 Push-button for activation of Automatic
7.5 Push-button for activation of Automatic Night
SetBack
The push-button (fig. 8, pos. 4) activates/deactivates Automatic
Night SetBack.
Automatic Night SetBack is only relevant for heating systems
prepared for this function. See section
The light field
(fig. 8, pos. 3) is on when Automatic Night
SetBack is active.
Factory setting:
Automatic Night SetBack = not active.
7.6 Push-button for selection of pump setting
Every time the push-button (fig. 8, pos. 5) is pressed, the pump
setting is changed.
A cycle is eight button presses. See section
TM
03 89
19 27
07
Pos.
Description
1
Display showing the actual pump power
consumption in Watt
2
Eight light fields indicating the pump setting
3
Light field indicating the status of Automatic Night
SetBack
4
Push-button for activation of Automatic Night
SetBack
5
Push-button for selection of pump setting
Note
Faults preventing the pump from operating
properly (for example seizing-up) are indicated in
the display by "- -". See section 13. Fault finding.
Note
If the pump impeller is rotated, for example when
filling the pump with water, sufficient energy can
be generated to light up the display even if the
power supply has been switched off.
1
2
3
4
5
ALPHA2 15-50 130
AUTO
ADAPT
TM
03 89
26 270
7
Number of
button
presses
Light field
Description
0
AUTO
ADAPT
(factory setting)
AUTO
ADAPT
1
PP1
Lowest proportional-pressure
curve
2
PP2
Highest proportional-pressure
curve
3
CP1
Lowest constant-pressure
curve
4
CP2
Highest constant-pressure
curve
5
III
Constant curve, speed III
6
II
Constant curve, speed II
7
I
Constant curve, speed I
8
AUTO
ADAPT
AUTO
ADAPT
Note
If the pump has been set to speed I, II or III, it is
not possible to select Automatic Night SetBack.
AUTO
ADAPT
III II I
AUTO
PP1
PP2
CP2
CP1