51 6.10 Pressures Test - Bosch ACS 753 Originalbetriebsanleitung

21. Select
to continue.
22. The station generates a vacuum in the A/C system
for the programmed time interval.
« After the vacuum has been carried out, the sta-
tion performs a leak check.
23. After a small charge, the refrigerant charged is re-
covered through the low pressure service hose.
24. The operation 23 is repeated three more times to
ensure an effective system flushing.
« After completing the fourth cycle, the station au-
tomatically drains oil.
« When the oil drain is complete, the station dis-
plays the total amount of oil discharged during
the process.
25. After successfully completing the flushing and after
reassembling the A/C system, replace the oil lost
during the process.
26. For further instructions, refer to the vehicle mainte-
nance manual.
27. Select
to return to the Functions Menu.
Robert Bosch GmbH
Instructions for use | ACS 753 | 63 |
6.10 Pressures test
To check if the system is efficient, check the pressures
in the system as follows:
1. Call up the Main Menu.
2. Select
.
3. Select
.
4. Select Functions.
5. Select A/C Perfomance Test.
6. Enter the service data and confirm with
(see chapter 6.1).
« ACS 753 displays a dedicated message that
indicates to the operator the procedures to be
performed to start the test.
i
It is possible not to perform the test with
go directly to phase 12 displaying.
7. Connect the high pressure (red) and low pressure
(blue) service hose to the vehicle A/C system.
8. Open the valves of the service hose connections
turning the ring nuts clockwise.
9. Turn on the vehicle and the A/C system on the
vehicle.
10. Select
to continue.
i
Wait for the stabilization of the pressures and read
the high pressure value displayed on the respective
pressure gauge.
11. Enter the high pressure reading value and the air
temperature value of the air vents in the appropri-
ate fields. Confirm with
i
Select to print the displayed report.
Select to continue.
12. Follow the instructions displayed and confirm with
.
13. Turn off the A/C system and the vehicle.
14. Close the valves of the service hose connections
turning the ring nuts counter-clockwise.
15. Select
to end.
en
and
.
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1 689 989 612 2020-12-01