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25
AC1234-6 Rev. C
Operating Instructions — System Flush
System Flushing Process
Thismachineprovidesamethodofremovingoilby
forcingliquidrefrigerantthroughanA/Csystem,or
componentsofanA/Csystem.Aspecialushing
adapter(purchasedseparately)accessestheA/C
systematthecompressorblock.Afterushing,the
refrigerantisrecoveredbythemachineandlteredby
therecyclingcircuit,returningittoSAEpuritylevels.
A/Csystemsvaryandmayrequiretheadaptingand
ushingofindividualcomponents.Refertoservice
bulletinsasneededduringthisprocedure.
Notes:
•
The machine must have at least 4.5 kg (10 lbs.) of
refrigerant available in the ISV (as indicated on the
display) for charging.
•
If the ush process is interrupted by an accidental
power-down or other fault, use the Recovery mode
to remove the refrigerant from the vehicle.
Setup
1.Verifytheoildrainbottleonthefrontofthemachine
isempty.SeeFigure10.Recoverrefrigerantas
outlinedinthismanualunderRecover Refrigerant
from a Vehicle.
2.Closeservicecouplervalvesanddisconnecthoses
fromvehicleaccessports.
3.Closethevalveontheexternalsourcetank.
Note: During this procedure, up to
4.5 kg (10 lbs.)
of refrigerant is charged into the vehicle A/C system.
If the ushing cycle is stopped before it is complete
and the external source valve is open, the machine
automatically adds refrigerant to the ISV, and there will
be no room to recover the refrigerant used for ushing.
4.RemovetheA/Csystemexpansiondevice,and
reconnectthettingstocreateabypass.
5.Disconnectthecompressorblockattherearofthe
compressor.
6.Attachthecompressorblockadapter(fromthe
ushingkit)tothesystemsideofthecompressor
block.
Figure 10
Oil Drain
Bottle
WARNING: To prevent personal
injury while working with
refrigerant, read and follow the
instructions and warnings in
this manual, and wear protective
equipment such as goggles and
gloves.