Calibration - Grundfos DDI 222 Instrucciones De Instalación Y Funcionamiento

9.6 Calibration

The dosing flow display is set by default for an operating
counter-pressure of 3 bar. Calibration can be used to set the
pump flow to the actual operating conditions.
With activated flow compensation (see section
4.4.4 Flow compensation
When dosing media with a viscosity different from
Note
water or after a software update the pump has to be
calibrated. After a software update "cal" is flashing in
the display.
Calibrate the pump under normal operating conditions with the
discharge line connected and at operating counter-pressure.
The dosed volume must be gauged in litres during
Note calibration, e.g. by drawing the dosing medium from
a gauged tank.
"OFF CAL" appears in the display.
1. Press the "Up" button.
– "- - -" and "CAL" (flashing) appear in the display.
2. Wait until "ON" and "CAL" (not flashing) appear in the display.
– "ON CAL" appears in the display.
Menu
Info
OFF
Menu
Info
Fig. 30 Calibration
):
Up
CAL
Down
Green LED flashing
99
Run
CAL
Flashing
Manual stop at user-defined
stroke number
Red LED
red LED
ml
1315
Stop
CAL
Value of manufacturing calibration - calculated for stroke number of
actual calibration
3. Press the "Start/Stop" button.
– Calibration is started. The LED flashes green and "Run"
flashes in the display.
• 200 strokes are performed by default. The number of strokes
performed appears in the display.
• Press "Start/Stop" to stop at any stroke value.
– The LED lights up red.
4. Press the "Start/Stop" button.
The current calibration value is displayed (not with replacement
circuit boards!).
5. Use the "Up" and "Down" buttons to enter the calibration
value (gauged volume in ml).
• Press the "Menu/Info" button (confirm the setting and move on
to the next menu item), or
• press the "Start/Stop" button (confirm the setting and close the
second function level).
The calibration process does not change the setting
for the assignment/weighting of the current input and
output for the flow rate.
Note
If a current input or output is used, check after
calibration to determine whether a new current
weighting is required.
- - - On
CAL
Flashing Wait until ON CAL (not
flashing) is displayed
OFF
CAL
Menu
Info
Process 200 strokes
200
Stop
CAL
Stop
Start
87
Stop CAL
Red LED
red LED
Up
1295
Down
Stop
CAL
Input of actual ascertained
calibration volume
Stop
Start
CAL
Stop
Start
Up
Menu
Info
29