Bosch ACS 663 Notice Originale page 65

6.10 Flushing
WARNING: to prevent injuries while
working with the refrigerant, read and
follow the instructions and warnings in this
manual, and wear protective clothing, such
as safety glasses and gloves.
WARNING: DO NOT disconnect the
service connections during the flushing
procedure. The refrigerant may escape
from the connections and exposure may
cause injury.
!
The flushing kit contains a replaceable filter that can
hold particles of certain dimensions, which can clog.
At the end of the flushing cycle, check the pressure
in the A/C system on the high pressure gauge (red)
and check the adapter for complete refrigerant
removal.
!
If there is still pressure or refrigerant remains, close
the flushing cycle and go to the recovery function
to recover the refrigerant with the high pressure
(red) and low pressure (blue) hoses. Then perform
the filter maintenance and repeat the flushing
procedure.
The flushing function must be performed using a
flushing kit approved by the vehicle manufacturer. Also
refer to the instructions included in the adapter while
performing the following procedure.
1. Check that the filter of the flushing device is not
clogged.
2. Install the flushing device according to the flushing
device instructions on the back of the station.
Do not make any connections at this stage.
3. Remove the oil drain bottle from the Bosch
station.
4. Empty it and dispose of the oil according to the law.
5. Reinstall the oil drain bottle on the station.
6. Recover all refrigerant from the A/C system to be
flushed.
7. Record the amount of oil collected during the
recovery. This quantity must be replaced with the oil
collected during flushing, if any.
!
The amount of oil collected and documented during
the A/C system flushing does not include the
amount of oil collected during the initial recovery.
Robert Bosch GmbH
Instructions for use | ACS 663 | 65
8. Check that there is at least 6,0 kg (13,2 lb) of
refrigerant in the station.
i
To complete the A/C system flushing effectively,
ensure that the station has at least 6,0 kg (13,2 lb)
of refrigerant in the internal tank.
i
If the station does not contain at least
6,0 kg (13,2 lb) of refrigerant in the tank, see the
Tank filling section.
9. Disconnect the station from the vehicle.
10. Refer to the vehicle maintenance manual and
connect the appropriate flushing adapters and
bypass hoses.
11. Connect the low pressure service hose (blue)
directly to the flushing kit filter.
12. Remove the high pressure service connection (red)
and connect the high pressure service hose (red) to
the A/C system suction hose adapter.
13. Use the supplied hose to connect the A/C system
drain hose adapter to the inlet of the flushing
device.
14. Connect the hoses following the instructions
provided with the flushing kit.
15. Call up the Main Menu.
16. Select
.
17. Select
.
18. Select Functions.
19. Select System Flush.
20. Enter the service data and confirm with
(see chapter 6.1).
« The station displays a message to confirm that
the flushing kit is properly connected.
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
recovered through the low pressure service hose.
en
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SP00D00616 2019-11-08