Calibration Check; Scales Reset - Bosch ACS 753 Repair Instructions

Introduction

Calibration Check

This function is used to ensure the machine's
internal scale is always calibrated. During this
test, use only the calibration weight provided
with the machine.
1. Verify the magnet on the bottom of the ma-
chine is clean. Refer to Figure 1-9.
2. Call up the Main Menu.
3. Select NEXT icon.
4. Select MENU icon.
5. Select Calibration Check from the Mainte-
nance Menu. The machine displays:
PLACE CALIBRATION WEIGHT ON MAGNET
LOCATED ON THE BOTTOM OF MACHINE
6. Attach the calibration weight to the magnet
(1) on the bottom of the machine.
7. Select OK icon to continue.
ALERT: Unit shown "Reading, do not
disturb".
The machine displays:
REMOVE CALIBRATION WEIGHT
FROM MAGNET LOCATED ON THE BOTTOM
OF MACHINE
8. Remove calibration weight from magnet
located on the bottom of machine.
9. Select OK icon to continue.
ALERT: Do not touch the unit in this
phase!
• If the display shows Calibration passed
the scale is calibration. Select OK icon to
return to the Maintenance Menu.
• If the display shows Calibration failed the
scale is out of calibration. Select RETRY
icon to retry. If calibration continues to fail,
contact an authorized service center for
assistance.
1
Figure 1-9. Magnet Location
SP00D00609 2018-03-26
ACS 753, ACS 763, ACS 863 Service Manual

Scales Reset

This procedure should be carried out regularly,
as the deviation from the zero point of the
oil/dye scales is corrected in the process.
1. Call up the Main Menu.
2. Select NEXT icon.
3. Select MENU icon.
4. Select Adjust Zero Offset from the Main-
tenance Menu.
5. Select the scale type to reset and confirm
with OK icon.
6. A message appears on the display to re-
move the oil bottles and/or the UV dye bottle
(according the selected scale type).
7. Carefully remove the bottle shown on the
display.
NOTE: To remove the "PAG", "POE" and "UV
Dye" bottles, you must pull the lever on the
colored covers of the bottles slightly to unlock
and pull them outward. Instead to remove the
oil drain bottle it is enought pulling it straight
outwards.
8. Select OK icon to confirm and reset the
selected scale.
9. Repeat the same procedure to reset the
other scales.
10. Zero position of the 4 scales will be set.
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Robert Bosch GmbH