ACS 653, ACS 663 Service Manual
SP00D00624
2021-04-08
Robert Bosch GmbH
33
Diagnostics and Testing
NOTE:
Refer to Scale Calibration at
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.
• 1st recovery stage.
• 2 st recovery stage (deep recover).
7. Select
OK
icon to continue or
ESC
icon to
cancel.
8.
The machine (for ACS 663-RI only) 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 will run low-side clearing then enter
into a 1
st
stage Recovery.
10. When the system has recovered to
-0.4 bar, the vacuum pump starts and runs
until recover is complete.
11. 2
th
stage recovery. Unit perform special
deep recovery function where pump and
compressor are working togheter to intake all
refrigerant small parts still in the A/C vehicle
system. Deep recover min tiem is 5 minutes.
Then Oil drain process to evacuate the
accumulator from used oil recoverd by vehicle.
12. After the oil drain is complete, a summary
of the amount of refrigerant recovered and
oil drained is displayed. The unit displays:
13. Select
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.
Or:
