Internal Refrigerent Identifier Maintenance (For Acs 663-Ri Only); Vacuum Pump Maintenance - Bosch ACS 653 Repair Instruction

ACS 653, ACS 663 Service Manual
Internal Refrigerent Identifier
Maintenance (for ACS 663-RI only)
A refrigerant identifier samples refrigerant
going into the ISV to verify it is R1234yf and
not contaminated. Replace the sample hose
assembly during every filter change and also if
prompted by an error message saying the hose
is clogged. See Figure 1-6.
1. Switch off the machine.
2. Open the service rear door.
3. Remove the rear cover (above the service
door) by pushing it up and extract it by
pulling it out.
1
Figure 1-6. Internal refrigerent identifier location
4. Disconnect the existing sample hose
assembly (2) between the rear side of the
manifold and the refrigerant identifier, and
install a new sample hose assembly. If the
filter is any color but white, the filter must
be replaced.
5. Pull the filter barbs from the rubber hoses.
Snap the filter (1) out of the clip.
6. Install a new filter (filter arrow in the same
direction as shown on the refrigerant
identifier). Do not kink the rubber hoses.
Push the rubber hoses back into the
refrigerant identifier housing until they are
straight.
7. Insert the rear cover so that the 4 holes on
the sides the cover fit into the 4 clips on the
machine. Push down to hook the rear cover.
8. Close the service rear door.
Robert Bosch GmbH
2
LED legend of the refrigerant identifier
Led
Flashing Red
Solid Blue
Flashing Blue
Alternating Blue and Green
Alternating Blue and Red
Flashing Yellow
Alternating Yellow and
Green
Alternating Yellow and Red

Vacuum Pump Maintenance

NOTE: Vacuum pump oil must be changed with
every filter change, every 100 hours pump runs
or more often as necessary.
1. Call up the Main Menu.
2. Select NEXT icon.
3. Select MENU icon.
4. Select Pump Maintenance from the
Maintenance Menu or when prompted.
The display shows how long the vacuum
pump has operated since the last oil change.
REMAINING OIL LIFE XXX:XX (hhh:mm)
CHANGE OIL NOW?
5. Select OK icon to change vacuum pump oil.
6. If the the machine displays:
WARMING OIL FOR DRAIN
• allow the vacuum pump to run for two
minutes to warm up the oil.
7. If the oil is already warm, the display shows:
DRAIN USED OIL FROM PUMP AND REPLACE
WITH 550 ML OF NEW OIL REMOVE CAP TO
SPEED DRAINING OF OIL
8. Switch off the machine.
9. Open the service rear door.
10. Slowly open the oil fill port cover (2) to verify
there is no pressure in the machine. Then
carefully remove the cover. See Figure 1-7.
11. Remove the oil drain fitting cap (3) and
drain the oil into a suitable container for
disposal. Reinstall the oil drain cap (3) and
close tightly.
17
Introduction
Working status
Warm up phase
Warm up phase completed
Calibration in progress
Calibration OK, ready for
measurement
Calibration failed
Measurement in progress
Measurement completed,
passed
(displayed for max. 10 sec)
Measurement finished,
not passed
(displayed for max. 10 sec)
SP00D00624 2021-04-08