© MAHLE
Maintenance | ACX1281 | 29
ACX1281 | 29
| 29
en
8.8
Combo filter
8.8.1 Changing Combo-Filter
Warning – Risk of frostbite from
escaping refrigerant
Refrigerant causes severe frostbite on the skin.
h
Check the service hoses for damage.
h
Firmly connect the service quick-release cou-
plings to the service hoses.
h
Wear protective goggles.
h
Wear protective gloves.
t
Unit operation is disabled at the end of the filter service life.
Each filter is marked with a unique code. This code must be
entered when replacing the filter. It is not possible to operate
the ACX1281 if the same code is re-used. It is advisable to
keep a supply of filters in stock to avoid downtimes due to
the unit being disabled.
t
The ACX1281 is disabled once 150kg of R1234yf refrigerant
have passed through the filter. A new filter must be installed
and its unique code entered in the ACX1281 before vehicle
A/C service can be performed.
t
The message "Filter replacement due" appears once 125kg of
refrigerant have passed through the filter. As soon as this warn-
ing message is displayed, contact customer service to order a
new filter. The contact data can be found on the rating plate.
m
Pay attention to correct positioning of the two O-rings when
fitting a new filter!
Fig. 16: O-Rings
Fig. 17: Replacing filter
1 Combo filter
R-1234yf only
45
9897_46Nk
v
1
Fig. 18: Location of PIN number on filter
1 Code
1.
Check that gauges are both at 0 bar or less. If they are, skip
to step 3.
2.
If gauges show pressure, a hose drain must be performed
by selecting "
Maintenance
>>
Hose drain
". Allow process
to run to completion.
3.
Disconnect unit from power.
4.
Remove the right service door.
5.
Loosen the nut, using a 1 3/8" (35 mm) wrench.
6.
Remove the filter.
t
Make sure the old sealing rings are removed before securing
the new filter.
7.
Insert a new filter.
8.
Tighten the filter to 74 ft-lbs (100 N-m).
9.
Reinstall the service door.
10.
To finish filter reset, follow instruction in Section 8.8.2.
m
Take care not to damage any hoses or electrical connections
when changing the filter.
m
Never re-use an old filter.
8.8.2 Resetting filter replacement interval
1.
Plug unit electrical cord in appropriate receptacle and
power on unit.
2.
Select "
Maintenance
>>
Service report
>>
Statistics
>>
Filter drier life
".
3.
Enter the 16-position PIN number of the new filter.
4.
Store entries and return with
O
.
The leak test process is started.
Summary of Contents for ACX1281
Page 1: ...MAHLE ACX1281 EN Operation manual A C Service Units...
Page 33: ...MAHLE Notes 33 en 12 Notes...
Page 34: ...MAHLE 34 ACX1281 Notes en...
Page 35: ...MAHLE Notes 35 en...
