EN
Using the oil checker
Oil Checker
18
5.4
Extracting contaminated oil
➤
Close the quick service coupling (fig.
1
5, page 3) on the high-pressure
connection of the air conditioner.
➤
Hold the sight glass (fig.
2
3, page 3) vertical (blue at the top).
➤
Slowly open the low-pressure shut-off valve (fig.
2
1, page 3) until the
refrigerant has been completely drawn out of the sight glass.
➤
If necessary, use a separate disposal unit for emptying the residue.
➤
Ensure that the sight glass is depressurized.
➤
Close the low-pressure coupling on the vehicle.
➤
Release the low-pressure quick coupling (fig.
1
4, page 3) and the high-
pressure quick coupling from the vehicle.
➤
Open the sight glass in the depressurized state and feed the oil inside to
the waste oil disposal.
➤
Clean the sight glass (chapter “Cleaning and maintenance” on page 20).
➤
Evacuate the oil checker through the service connection (fig.
2
7,
page 3).
5.5
Ending the test and returning the oil
➤
Close the quick service coupling (fig.
1
5, page 3) on the high-pressure
connection of the air conditioner.
Dark red
Yellow-red
Film possibly degraded
Replace the refrigerant oil.
The compressor may be dam-
aged. Notify the owner of the
vehicle.
Orange
Yellow
Film possibly degraded
Replace the refrigerant oil to
improve cooling.
The compressor may be dam-
aged. Notify the owner of the
vehicle
Light yellow
Clear
Normal condition
–
Color
Meaning
Action
AirCon-Oilchecker-EMEA16.book Seite 18 Dienstag, 20. August 2019 2:23 14
Содержание AirCon Oil Checker R134a
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