1 689 988 238 2012-11-06| Robert Bosch GmbH
86 | ACS 651/751 | Commissioningen
i If the message Calibration Check OK is dis-
played, the calibration check is complete and the refrig-
erant tank cylinder does not require calibration.
7. Press E.
8. Press c thrice to return to the main menu.
"You have successfully checked if the refrigerant tank
scale is accurate.
i If the message Calibration Check NOK is dis-
played, the refrigerant tank sensor has to be calibrat-
ed. Contact customer service to perform calibration.
4.6 Refrigerant tank scale calibration
check
The refrigerant tank scale is calibrated at the factory.
You can perform a calibration check to determine the
accuracy of the R134a scale.
i Before performing the calibration check, ensure
that the ACS 651/751 is positioned on a horizontal,
vibration-free surface.
1. In the main menu select "ACS Maintenance".
2. Select "Maintenance" → "R134a Calibration
Check".
3. Select "Start Calibration Check".
4. Attach the calibrating weight (Fig. 24, Pos. 2) to the
neck (Fig. 24, Pos. 1) of the R134a cylinder.
2
1
Fig. 24: Attaching the standard calibrating weight to the cylinder
neck
i The part number of the weight is F 002 DG3 4RD.
5. Select "Place Standard Weight".
6. The option "Calibration Check" is automatically
selected.
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