Replacing The Filter Drier; Replacing The Inline Filters - Bosch ACS 255 Original Instructions Manual

7.5

Replacing the filter drier

The filter drier removes the moisture and suspended
particulate matter from the refrigerant. It is recom-
mended to change the filter drier after the specified
duration of usage. Reusing saturated filter driers may
result in reduced recycling capability of the ACS 255.
Consequently, the purity level of the refrigerant to be
charged to the vehicle A/C system also reduces.
i
The filter drier needs to be replaced after every
75 kg of refrigerant is recovered. When it is time to
replace the filter drier, the message "
Replacement Due
" is displayed before starting
vehicle A/C service.
As soon as the warning message is displayed, contact
customer service for ordering a new filter drier.
i
When inserting the new filter drier, ensure that it is
installed in the correct position.
1. Perform hose drain (see chapter 6.8.2).
2. Disconnect the power cable from the mains supply.
3. Disconnect the power cable from the power socket.
4. Disconnect the fresh oil bottle and the used oil
bottle.
5. Disconnect the HP and LP hoses from the respective
connectors.
6. Open the front panel.
Fig. 9: Replacing the filter drier
1 Nut
2 Filter drier
3 Tie
4 Tie
5 Nut
Bosch Limited
7. Cut the cable ties (Fig. 9, Pos. 3, 4) that bind the
filter drier to the bracket of the ACS 255.
i
Use a suitable spanner to unfasten or fasten the
nuts.
8. Hold the filter drier firmly and loosen the fastening
nuts (Fig. 9, Pos. 1, 5).
9. Detach the filter drier (Fig. 9, Pos. 2).
10. Connect the new filter drier. Ensure that the O-
Filter Drier
!
Ensure that you tighten the fastening nut only after
ensuring that the threads of the filter drier are en-
gaged properly with the fitting.
!
Ensure that you do not disturb the hose connections
or the electrical connections while replacing the
filter drier.
11. Tighten the fastening nuts.
12. Close the front panel.
13. Attach the fresh oil bottle and the used oil bottle.
14. Connect the end connectors of the service
15. Connect the power cable to the power inlet on the
16. Connect the other end of the power cable to the
17. Power on the ACS 255.
18. In the main menu, select "ACS Maintenance" >>
19. Select "Reset Filter" and press .
20. Press  to confirm.
"
You have successfully replaced the filter drier and reset
the maintenance counter.
1
7.6
2
The inline filters have to be changed every time the fil-
3
ter drier is changed. The inline filters consist of a filter
insert (Fig. 10, Pos. 2) mounted inside the filter body.
4
5
459897_117Nkv
Fig. 10:
1. Adapter for manifold
2. Filter insert
3. Adapter for hoses
4. O-ring
Maintenance | ACS 255 | 19
rings are present at the mating part of the filter.
hoses (Fig. 7, Pos. 2) to the hose connections
(Fig. 7, Pos. 1). Observe the red / blue identifica-
tion stickers on the front panel before connecting
the hoses. Tighten the hose connections.
ACS 255.
mains supply.
"Maintenance".

Replacing the inline filters

1
Inline filter overview
F 002 DG9 432
en
3
2
4
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2014-12-19