Grundfos rmq-a, Installation & Operating Instruction

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7.2 Setting the collecting tank height
The height is the distance from the bottom of the
tank to the overflow.
Setting the collecting tank height on the control panel
is only necessary if you require exact display
indication of the water level.
The RMQ unit operates independently of this setting
as the system switches automatically to mains-water
supply when the water level in the collecting tank is
approx. 0,3 metre.
The unit can be set to display correct water level in
the collecting tank. The setting can be made using a
screwdriver. See fig.
12 .
Fig. 12 Setting the height
Procedure
1. Remove the rubber plug from the potentiometer.
See section 8. Control panel , pos. 2.
2. To activate the setting, turn the potentiometer
approx. 45 °.
3. Turn the potentiometer to the maximum water
depth in the collecting tank. Do as follows: Turn
the potentiometer until the desired height is
shown in the display. See the table.
4. Press [Reset] to store the setting. An acoustic
signal confirms the operation.
5. Insert the rubber plug.
Significance of the display reading during the setting
process.
Examples:
Example: If the water level is set to max. 1 m, the 50
% display reading means that the water level in the
tank is 0,5 m.
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Display reading
Height [m] Permanently on Flashing
1.0 10 % 100 %
1.1 10 % 10 %
1.2 10 % 20 %
1.3 10 % 30 %
1.4 10 % 40 %
1.5 10 % 50 %
2.0 10 % / 20 %
2.1 20 % 10 %
2.2 10 % 20 %
2.3 10 % / 20 % 30 %
Height [m] Display reading
1.0 10 % on, 100 % flashing.
1.1 10 % flashing.
1.3 10 % on, 30 % flashing.
1.4 10 % on, 40 % flashing.
2.5 10 % + 20 % on, 50 % flashing.