Replacing Load Cell - Bosch ACS 653 Repair Instruction

Electrical
ss01362
GND
Figure 3-10. Scale Assembly

Replacing Load Cell

WARNING: Disconnect the unit from
the power source before beginning
service work. Incorrect use or
connections can cause electrical
shock.
WARNING: Wear safety goggles
when working with refrigerants.
Refrigerants can cause eye injury.
WARNING: Use extreme caution
w h e n d i s c o n n e c t i n g h o s e s .
Pressurized refrigerant may be
present in hoses. Point hoses away
from you and anyone nearby.
Instructions
These general instructions outline the steps to
replace the oil drain load cell. See Figure 3-11.
Removing the Load Cell
1. Disconnect the unit from the power source.
2. Remove the oil drain bottle from the load
cell.
3. Remove the oil PAG bottle.
4. Remove the cap nearby the usb ports and
remove the screw.
5. Remove the 8 screws from the front plastic
dashboard and open it in order to access
the control board to disconnect the load
cell cable.
6. Remove the 4 screws securing the load cell
to adapter block (internal side of the panel
and outside the panel, see Figure 3-11).
7. Remove the load cell.
SP00D00624 2021-04-08
Installing the Load Cell
1. Connect the new load cell to the adapter
block and secure in place with screws
CBP8
(arrow going down see picture).
2. Be sure adapter or load cell don't toching
the external frame.
3. Connect the load cell wire harness to the
control board.
4. Close and fix the front plastic dashboard
with 8 screws.
5. Screw back the screw and place the cap
(see Figure 1-15 in the Maintenance section).
6. Connect the unit to its power source and
turn the unit on. Press the MENU icon.
7. Select the SERVICE MENU.
8. Enter password and select OK icon.
9. Select the Up or Down arrow key to scroll
to CALIBRATIONS and select OK icon.
10. Scroll to the load cell requiring calibration
and and select OK icon.
11. The process of calibrating the load cell
involves two weights. The first is the
unloaded load cell (0.0 grams), the second
is with a weight hanging from the load
cell (500 grams) Pause between each
calibration step to make sure the values are
loaded into the data set.
12. Double check with sample weight of
250 grams is needed to complete calibration
After entering, select OK icon.
Cell mounting
direction
Screws
80
ACS 653, ACS 663 Service Manual
Screws
Figure 3-11. Load cell
Robert Bosch GmbH
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