Flushing The Air Conditioning System - Waeco AirCon Service Center Operating Manual

Operation
8.9

Flushing the air conditioning system

I
NOTE
The "Flushing" menu is used to flush the vehicle air conditioning sys-
tem with fresh refrigerant. Flushing is especially suitable for replacing
old compressor oil or removing most metallic residue from the system.
Before flushing, the refrigerant must first be extracted from the vehicle
air conditioning system. Afterwards the system components which can-
not be flushed must be disconnected from the refrigerant circuit (for
example the compressor or filter). After that, the components to be
flushed are connected to the service ports of the AirCon Service Center
using special adapters to form a flushing circuit.
1. Start by fitting the connections of the AirCon Service Center to the
vehicle air conditioning system, and opening them.
2. In the basic menu, use the cursor keys  or  to select
"Free selection":
3. Press ENTER to confirm.
4. If necessary, use the keypad (7) to enter the data and press ENTER
to confirm.
If no data is to be entered, press ENTER to switch to the next
program step.
5. Select "Rec/Recycling phase ?" (the chosen setting flashes) and
press ENTER to confirm.
6. For the "Pressure increase test time", enter 1 minute and press
ENTER to confirm.
7. Deselect "Vacuum phase ?" using No (the chosen setting flashes)
and press ENTER to confirm.
8. Deselect "Filling phase?" using No (the chosen setting flashes)
and press ENTER to confirm.
9. Select "Process start ?" with ENTER.
10. Disconnect the station from the vehicle after the extraction process is
complete.
11. Disconnect the system components which cannot be flushed from
the refrigerant circuit. These components include:
– Compressor
– Line filter
– Fixed choke
– Collection container
– Filter dryer
– Expansion valve
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S h o r t s e l e c t i o n
F r e e s e l e c t i o n
O t h e r s e l e c t i o n s
E N T E R - O K
VAS 6380B / VAS 6381B