ACS 653, ACS 663 Service Manual
SP00D00624 2021-04-08Robert Bosch GmbH
25
Introduction
The scope of delivery of the conversion kit
consists of:
• Dryer lter.
• Service hoses (HP and LP).
• Quick couplers (HP and LP).
• Flush ports with o’ring and Schrader
valves (HP and LP).
• Contamination port with o’ring and
Schrader valve.
• R1234yf sticker.
• Air ow sensor.
• Vacuum pump oil.
• R1234yf tank adapters.
For the conversion kit installation follow
instructions hereby:
1. Call up the Main Menu.
2. Select icon.
3. Select icon.
4. Select " and
enter password then select icon.
5. Select and select
icon to start the function.
To empty the A/C unit make use of a
second recovery machine with same refrigerant
and suitable free capacity.
6. Connect the two A/C units as indicated on
display. Turn on the recovery unit and select
icon.
7. Start the recovery function from the recovery
unit.
1
1
1
2
2
In case of recovery machine without
deep-recovery capabilities, perform vacuum for
denitive emptying.
8. Disconnect the recovery machine and
connect hoses as indicated at display.
9. Select icon to start the vacuum function.
The A/C unit can move to the second step
“Convert unit refrigerant” only if previous “AC unit
emptying” has been completed successfully.
10. The vacuum function is nished when the
display shows:
SERVICE VACUUM COMPLETE
11. Select icon to continue.
12. Select and select
icon to start the function.
13. Select icon to continue with the
conversion procedure.
14. The display prompts to replace all the
components.
15. Switch o the machine.
16. Remove the 3 screws (1) either from left and
right side of the machine and the 2 screws
(2) underneath the frontal panel.
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