ACS 653, ACS 663 Service Manual
SP00D00624 2021-04-08Robert Bosch GmbH
41
Diagnostics and Testing
4. Select icon to repeat, or icon
to return to the Service Menu.
Service vacuum is a manually operated test
used to pull a vacuum on the machine to
remove air from the manifold and ISV prior to
relling the ISV after service.
1. From the Service Menu, scroll to
.
2. Select icon. The following displays:
3. Enter a new time using the keypad and
select icon to begin the vacuum.
If the pressure is greater than 0.35 bar, this
screen displays:
The A/C unit internal clearing is used to
evacuate service hoses, oil separator and
dryer lter (compressor discharge not cleared).
Components ON:
1. LS inlet Solenoid S4.
2. HS Inlet Solenoid S5.
3. Recover Solenoid S11.
4. Compressor.
5. The vacuum pump should turn on and the
time begins to count down. Process will stop
early if sucient vacuum level is achieved.
To pause at any point during the process
select icon. At the Pause function,
the Service Vacuum can either be resumed
or cancelled.
7. Select icon to return to the Service
Menu.
The inlet pressure should stay below 0.35 bar
throughout the Service Vacuum. The Vacuum
Pump, Vacuum Solenoid, HS Charge Solenoid,
Oil Return Solenoid, LS Inlet Solenoid, Tank
Liquid Solenoid and Recover Solenoid will turn
ON during this test.
6. When the vacuum Time Remaining falls
to 00.00, the outputs will turn OFF and the
following displays:
To Next Page
Loading...
