Bosch ACS 651 Originalbetriebsanleitung Seite 105

15. Press E.
 The selected service phase starts. To abort, press
c. At the end of the service, Hose Drain screen is
displayed.
Warning - Risk of frostbite!
If refrigerant escapes, there is a risk of frost-
bite to the hands and body.
¶
Carefully disconnect filling hoses as all
hoses can contain pressurized refrigerant.
16. Turn the quick couplers in the counterclockwise
direction and detach the HP/LP couplers from the
service connections on the vehicle.
17. Press .
18. Press  to start draining the refrigerant from the
hoses.
 Once the refrigerant is drained, a summary screen
is displayed.
19. Press  to print a brief report of the service. If you
require more printouts, press ' for each copy.
20. Press E to return to the main menu.
"
The servicing of the vehicle A/C system is complete.
Robert Bosch GmbH
Program description | ACS 651/751 | 105
6.8 Flushing the ACS 651/751 after
changing the oil type
When the oil type is changed from PAG to POE or vice-
versa, it is necessary to flush the hydraulic system of
the ACS 651/751. This has to be done to avoid cross-
contamination of PAG and POE oil.
!
If the ACS 651/751. is not flushed, cross-contami-
nation might cause damage to the internal hydraulic
system and also the vehicle A/C system. In such
cases, Bosch will not be liable for any damages.
Execute the following procedure to flush the
ACS 651/751.
1. Connect the HP and LP quick couplers via a connec-
tor.
2. Execute steps 4 - 6 of the procedure in chapter 6.9.
In the main menu, select "Vehicle A/C Service" and
press E.
3. Select "Short flushing" and press E.
4. Press E.
 The flushing process starts.
To cancel the flushing, press c. After the flushing is
5.
complete, disconnect the quick couplers from the
connector,
"
The flushing is complete.
en
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1 689 988 238 2012-11-06