Grundfos DDI 150-4, Installation And Operating Instructions Manual

Page: 29 / 632

English (GB)
29
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.
Calibrate the pump under normal operating conditions with the
discharge line connected and at operating counter-pressure.
"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.
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).
Fig. 30 Calibration
Note
With activated flow compensation (see section
4.4.4 Flow compensation ):
When dosing media with a viscosity different from
water or after a software update the pump has to be
calibrated. After a software update "cal" is flashing in
the display.
Note
The dosed volume must be gauged in litres during
calibration, e.g. by drawing the dosing medium from
a gauged tank.
Note
The calibration process does not change the setting
for the assignment/weighting of the current input and
output for the flow rate.
If a current input or output is used, check after
calibration to determine whether a new current
weighting is required.
TM
03
66
78
45
06
red LED
red LED
Down
Up
Stop
Start
Stop
Start
Stop
Start
OFF
Up
Down
CAL
- - -
CAL
Menu
Info
Menu
Info
Menu
Info
Menu
Info
OFF
CAL
99
Run
CAL
200
Stop
CAL
87
Stop CAL
1315
Stop CAL
ml
1295
Stop CAL
On
CAL
Up
Flashing
Green LED flashing Process 200 strokes
Manual stop at user-defined
stroke number
Value of manufacturing calibration - calculated for stroke number of
actual calibration
Input of actual ascertained
calibration volume
Flashing Wait until ON CAL (not
flashing) is displayed
Red LED
Red LED