User Guide
16
11.2 Changeover between proportional pressure and 
constant pressure 
When the buttons   and   are pressed simultaneously, the light 
fields will indicate the selected control mode, i.e. proportional 
pressure or constant pressure
.
If the buttons are pressed for more than 5 seconds, the control 
mode will change over to constant pressure and proportional 
pressure respectively. 
11.3 Setting to max. curve duty
Press   continuously to change over to the max. curve of the 
pump (top light field flashes). When the top light field is on,   
must be pressed for 3 seconds before the light field starts
flashing. 
To change back, press   continuously until the desired head is 
indicated. 
Fig. 25 Max. curve duty
11.4 Setting to min. curve duty
Press   continuously to change over to the min. curve of the 
pump (bottom light field flashes). When the bottom light field is 
on,   must be pressed for 3 seconds before the light field starts 
flashing. 
To change back, press   continuously until the desired head is 
indicated. 
Fig. 26 Min. curve duty
11.5 Start/stop of pump
Stop the pump by continuously pressing   until none of the light 
fields are activated and the green indicator light flashes.
Start the pump by continuously pressing   until the desired head 
is indicated.
Light fields Control mode
Top + bottom light fields flash Proportional pressure
Middle light fields flash Constant pressure
TM00 7345 1304TM00 7346 1304
H
Q
H
Q
Grundfos.bk Page 16 Thursday, November 11, 2010  11:21 PM










