Filter Maintenance - Bosch ACS 653 Repair Instruction

Introduction
• Connect a second recovery machine to
the fitting (1) located on the side of the
machine. See Figure 1-3. Run a recovery
to remove the refrigerant sampled by the
refrigerant identifier in the machine.

Filter Maintenance

The filter is designed to trap acid and particulates,
and to remove water from refrigerant. To meet
this mandate, the filter must be replaced after
(SEE TABLE) of refrigerant has been filtered.
The unit gives a warning when (SEE TABLE) of
the filter capacity has been used; the unit locks
down when the (SEE TABLE) filter capacity has
been reached and will no longer function.
Check Remaining Filter Capacity
1. Call up the Main Menu.
2. Select NEXT icon.
3. Select MENU icon.
4. Select Filter Maintenance from the
Maintenance Menu or when the machine
prompts. The machine displays:
REMAINING FILTER CAPACITY: XXX.XYY
REPLACE FILTER NOW?
• The machine displays amount of filter
capacity remaining until the machine
locks down. This message may occur at
anytime during the course of an A/C system
maintenance action.
5. Select OK icon to change the filter; Select
ESC icon to resume using the machine.
Replace the Filter
1. If OK icon was selected to change the filter,
the unit will clear the filter, then prompts for
the new filter code to be entered:
ENTER NEW FILTER SERIAL NUMBER
NOTE: If S E R I A L N U M B E R W R O N G is
displayed, the serial number has been incorrectly
entered or the filter has already been used in this
machine.
2. Use the keypad to enter the serial number
that appears on the new filter and select OK
icon to continue.
• The machine clears the existing filter and
displays:
TURN POWER OFF
AND REPLACE FILTER
SP00D00624 2021-04-08
ACS 653, ACS 663 Service Manual
3. Switch off the machine.
4. Open the service rear door.
5. Remove the old filter (1) by turning it
counterclockwise. Refer to Figure 1-4.
6. Look at the new filter. Verify both O-rings
are lubricated and correctly located in the
grooves as shown in Figure 1-5.
7. Install the new filter by threading it
clockwise into place. Verify the filter is
positioned correctly. Tighten the filter to
20 Nm ± 1.
8. Close the service rear door.
9. Switch on the machine.
10. Machine starts with vacuum pump oil
change (Refer to the "Vacuum Pump
Maintenance" in this section).
11. Recycle the filter that was removed from
the machine according to the laws in your
jurisdiction.
CAUTION: Use only authentic Bosch filters
in this machine. All performance tests and
claims are based on using this specific filter.
Model Replacement filter at: 68 kg
R134a (alert 56 kg)
Model Replacement filter at: 150 kg
R1234yf (alert 138 kg)
Figure 1-4. Filter Location
O-rings
Figure 1-5. O-ring Location
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Robert Bosch GmbH