Recover Function - Bosch ACS 553 Service Manual

ACS 553, ACS 563 Service Manual
N O T E : R e f e r t o S c a l e C a l i b r a t i o n a t
Replacement Scale Assembly in the Electrical
section, if necessary.
The Recover and Charge function tests must be
performed sequentially, in the order presented
here.

Recover Function

During the Recover process, the system will
initiate a filter check, service data entry, and
inlet pressure check.
1. Empty the oil drain bottle before starting a
recovery.
2. Connect the high-side (red) and/or low-side
(blue) hoses to the test tank.
3. Open the coupler valves on the hoses by
turning the collars clockwise.
4. Select the RECOVER icon from the main
menu.
5. The screen will message display: "Connect
both service hoses to AC system being
serviced and open both coupler valves".
6. Select OK icon and unit perform:
• Inlet pressure check.
• A/C unit internal clearing process.
• Recovery stage.
7. Select OK icon to continue or ESC icon to
cancel.
8. The machine (if the external refrigerant
identifier is enabled) checks the refrigerant
in the source tank to verify it is R1234yf and
not contaminated. The machine displays the
following screens:
INITIALIZING REFRIGERANT IDENTIFIER
ANALYZING REFRIGERANT SAMPLE
REFRIGERANT PURITY PASSED
9. The unit performs a self-cleaning cycle to
clean the internal hoses from refrigerant
traces, if any.
10. The function stops when the refrigerant is
fully recovered.
Robert Bosch GmbH
Diagnostics and Testing
11. After the recovery, the machine performs an
oil drain procedure, which may take up to
90 seconds to be completed.
12. After the oil drain is complete, a summary
of the amount of refrigerant recovered and
oil drained is displayed. The unit displays:
Or:
13. Select Print icon to print out recovery
information and pre-recover diagnostics or
select OK icon to return the main menu.
The displayed recovered weight can vary
depending on ambient conditions and
should not be used as an indicator of
scale accuracy. The amount of oil that was
removed from the A/C system is the amount
of new oil that can be charged into the A/C
system after evacuation is complete.
• Use only new oil to replace the oil removed
during the recycling process.
• Dispose of used oil according to government
laws and regulations.
Recovery is complete.
27
1 689 975 295 2021-04-13