ACS 753, ACS 763, ACS 863 Service Manual
SP00D00609
2018-03-26
Robert Bosch GmbH
67
Electrical
Figure 3-7. High-Pressure Cut-Out Switch
Replacement High-Pressure Cut-Out
Switch
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
when disconnecting hoses.
Pressurized refrigerant may be
present in hoses. Point hoses away
from you and anyone nearby.
Replacement Instructions
Follow these steps to replace the high-pressure
cut-out switch on the unit. See Figure 3-7.
1. Evacuate the unit with a recovery service
unit.
2. Turn off the power switch and disconnect
the unit from the power source.
3. Remove the shroud to access the manifold
block.
4. Disconnect the wires from the faulty high-
pressure cut-out switch.
5. Carefully remove the faulty cut-out switch.
6.
Clean the fitting by wiping away dirt, grease,
and oil.
NOTE:
DO NOT apply thread sealant to any
internal threads. Apply thread sealant to only
the external pipe threads of the fittings.
WARNING: Thread sealant contains
ADHHM-128 anaerobic adhesive and
methacrylic ester. If there is skin
contact with the sealant, thoroughly
wash the skin with soap and water.
7. Install the new high-pressure cut-out switch.
8. Connect the wires to the new switch.
9. Connect the unit to the power source.
10. Operate the unit and check for leaks.
11. Replace the shroud.
9. Return to the Service Menu and scroll to
Set
serial number
and select
OK
icon to select.
10. Enter the serial number from the serial
number decal on the machine.
11. Select
OK
icon to save the serial number.
12. Perform the Scale Calibration.
13. Enter the software registration code in the
registration screen. If you don’t know the
code, contact Bosch tech support.
14. Perform a functional check of the unit.
Attach control wires
to these terminals
