Scale Calibration (Load Cells) - Bosch ACS 753 Repair Instructions

Electrical

Scale Calibration (Load Cells)

1. Switch the power on. The unit will verify
application loaders, files, and sensors
during the power up sequence and then will
display the amount of refrigerant available
in the internal tank.
2. Disconnect the liquid hose and vapor hose
from the tank.
3. Disconnect the electrical wires from the air
purge solenoid, tank temperature sensor,
and pressure transducer.
4. Remove the bolts securing the tank to the
scale assembly.
5. Remove the tank from the scale and verify
there is no weight on the scale or anything
interfering with the operation of the scale.
6. Access the SERVICE MENU.
7. Enter yearly password.
8. Complete the necessary steps to select
CALIBRATE LOAD CELLS.
NOTE: Calibration can be performed in Imperial
or Metric units. The unit of measure displayed
is determined at machine set-up.
9. Perform Calibrate Load Cells procedure in
the Diagnostics and Testing section.
10. Remove the weights and place the tank on
the scale.
11. Reconnect tank temperature sensor, air
purge solenoid, and pressure transducer
wires.
12. Reconnect liquid and vapor hoses to tank.
13. Secure the tank to the scale with two bolts.
14. Perform a functional test, check for leaks,
and replace shrouding.
SP00D00609 2018-03-26
ACS 753, ACS 763, ACS 863 Service Manual
ss01362
GND
Figure 3-9. Scale Assembly/Magnet
70
CBP8
Robert Bosch GmbH