Control Functions; Elements On The Operating Panel; Display; Light Fields Indicating The Pump Setting - Grundfos ALPHA1 15-50 Bedienungsanleitung

6.4.2 Type key
Example
Pump type
[ ]: Standard version
Nominal diameter (DN) of inlet and outlet
ports [mm]
Maximum head [dm]
[ ]: Cast-iron pump housing
N: Stainless-steel pump housing
Port-to-port length [mm]

7. Control functions

7.1 Elements on the operating panel

ALPHA1
1
2
3
Fig. 14 Operating panel
Pos. Description
1 Display showing the actual power consumption in watt.

Light fields indicating the pump setting.

2
See section 7.3 Light fields indicating the pump
3

Button for selection of pump setting.

7.2 Display

The display (1) is on when you have switched on the power
supply.
The display shows the actual pump power consumption in watt.
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.
ALPHA1 25 -40 N 180
setting.
7.3 Light fields indicating the pump setting
The pump has nine performance settings which you can select
with the button (5). See fig. 14.
The pump setting is indicated by nine light fields in the display.
See fig. 15.
Fig. 15 Nine light fields
Button Active light
presses fields
Factory setting
0
1
2
3
4
5
6
7
8
For information about the function of the settings, see section
7.5 Control modes.
7.4 Button for selection of pump setting
Every time you press the button
See fig. 14, pos. 5.
A cycle is nine button presses. See section
indicating the pump setting.
Description
Intermediate
proportional-pressure curve,
PP2
Highest
proportional-pressure curve,
PP3
Lowest constant-pressure
curve, CP1
Intermediate
constant-pressure curve,
CP2
Highest constant-pressure
curve, CP3
Constant curve/constant
speed III
Constant curve/constant
speed II
Constant curve/constant
speed I
Lowest proportional-pressure
curve, PP1
, the pump setting is changed.
7.3 Light fields
13