Grundfos DDI 222 Montage- Und Betriebsanleitung Seite 42

9.10.7 Calibrating the sensor after the sensor has been
replaced
Once a sensor has been replaced, the new sensor must be
calibrated to the ambient pressure.
Prepare the pump for the calibration:
1. Before screwing in the sensor, check that no dosing liquid is
left in the place where the pressure sensor will be screwed in!
2. Screw in the new sensor with the correctly fitting O-ring.
3. Screw the sensor plug into socket 2.
4. Unscrew the suction valve.
Calibration of sensor
Calibration of pressure sensor
Prepare the pump first!
Fig. 50 Calibration of pressure sensor
1. Open the service level.
2. Repeatedly press the "Menu/Info" button to navigate in the
service level until you reach menu item "P" (calibration of
pressure sensor).
– "P:OFF" appears in the display.
3. Press the "Up" button to prepare the calibration.
– "P:ON" appears in the display.
When the pump is prepared for the calibration, calibrate the
pressure sensor:
1. Press the "Start/Stop" button.
– "P:- - -" is displayed for approximately 2 seconds.
– "P:CAL" appears in the display.
– The pressure sensor has been calibrated.
2. Press the "Start/Stop" button
– to confirm the new settings
– to exit the service level
– to open the first function level.
3. Fit the pump back on.
4. Screw in the suction valve.
Warning
Risk of chemical burns!
Wear protective clothing (gloves and goggles) when
working on the dosing head, connections or lines!
Do not allow any chemicals to leak from the pump.
Collect and dispose of all chemicals correctly!
The O-rings must be correctly placed in the specified
groove.
Caution
Observe the flow direction (indicated by an arrow)!
Only tighten the valve by hand.
42
Service level
Menu
Info
P:OFF
Up
CAL
P:- - - P:CAL
Stop
Start
CAL
Wait approximately 2 seconds
Stop
Start
P:ON
CAL
CAL