EN
Oil Checker
Using the oil checker
19
➤
Hold the sight glass (fig.
2
3, page 3) vertical (blue at the top).
➤
Slowly open the low-pressure shut-off valve (blue) (fig.
2
1, page 3) until
the refrigerant has been completely drawn out of the sight glass.
✓
The refrigerant flows back to the air conditioner.
➤
Close the low-pressure shut-off valve (blue).
➤
Turn the sight glass by 180° (red on top).
A
➤
Open the low-pressure shut-off valve (blue) very slowly so that the refrig-
erant oil can be drawn out of the sight glass.
➤
Close both shut-off valves.
➤
Release the quick service couplings for the low-pressure and high-pres-
sure connections (fig.
1
4+5, page 3).
➤
Clean the hoses and the oil checker if necessary.
5.6
Cleaning the filter
A
➤
Unscrew the sight glass in the depressurized state on the low-pressure
side.
➤
Remove the filter.
➤
Clean the sintered filter.
➤
Insert the filter.
➤
Screw the sight glass back together.
➤
Evacuate the oil checker after assembly through the service connection
(fig.
2
7, page 3).
NOTICE!
If you open the shut-off valve too quickly, compressor damage is
possible.
NOTICE!
Before cleaning the filter, ensure that the sight glass is depres-
surized.
Evacuate the oil checker through the service connection
(fig.
2
7, page 3).
AirCon-Oilchecker-EMEA16.book Seite 19 Dienstag, 20. August 2019 2:23 14
