© MAHLE
24 | ACX11 80 | Maint enance
en
7 . Maint enanc e
7.1 M aint enanc e
int er val
Desc ript ion
Per iod
Calibration of scale
1 x per year
Vacuum pump oil replacement
and system leak test
After 10 hours of service
Inline filter replacement
Refer to filter drier
Combo filter replacement and
system leak test
After 68kg (150lbs)
of refrigerant processed
White sample filter of refrigerant
identification unit
As soon as red spots begin to
appear on any portion of the
white element
m
Never perform any maintenance work which is not
expressly recommended in this Section.
m
Contact customer service if components have to be
replaced other than in the course of maintenance work.
1.
7.2
Calibrat ion of r ef rigerant sc ale
t
The internal refrigerant bottle is calibrated at the factory.
1. Use and to select "Set up >> M aint enanc e Op-
t ions".
2. Select a Sit e Calibrat ion to perform a calibration using
the MAHLE 4kg weight.
3. Follow on screen instructions to recalibrate unit.
4. Remove the calibrating weight once complete.
7.3 Calibrat ion
c hec k
1. Use and to select "Set up >> Maint enanc e Op-
t ions >> Calibrat ion c hec k ".
2. Follow on screen instructions to check calibration.
t
Getting message "calibration check failed", calibration
check should be performed again and if it still fails a
second time, a calibration of the internal refrigerant
bottle scale should be performed.
7 .4
Replac ing inline f ilt ers
t
The inline filters must always be changed when
replacing the filter drier.
The inline filters consist of a filter element fitted in
the hose adapter.
1 Adapter for connection
3 Adapter for hoses
2 Filter element
4 Sealing ring
1. Drain the service hoses.
2. Disconnect the service hoses from the inline filters.
Fig. 12:
Removing adapter
3. Remove the filter element.
4. Install the new filter element.
Fig. 13:
Installing lter element
t
Make sure the sealing ring is correctly positioned at the
adapter and not damaged. Replace the sealing ring if it
is damaged.
5. Screw the inline filter onto the adapter.
6. Attach the service hoses to the adapter.
