ACS 553, ACS 563 Service Manual
1 689 975 295 2021-04-13 Robert Bosch GmbH
74
Plumbing and Mechanical
1. Place the tank on the scale.
2. Secure the tank to the scale with two bolts.
3. Reconnect liquid and vapor hoses to tank
and open the tank valves.
4. Reconnect tank temperature sensor and air
purge solenoid wires.
5. Connect the unit to the power source.
6. Perform service vacuum (refer to “Service
Vacuum” in the Diagnostics and Testing
section).
7.
Maintenance section).
Every time the ISV is replaced, during
detector.
Reinstall the front plastic cover.
These instructions outline the steps to replace
the ISV assembly.
1. Remove the front plastic cover.
2. Close red and blue tank valves and
depressurize the unit (select “AC unit
emptying” function in the service menu).
3. Disconnect unit from the power source.
4. Disconnect the liquid hose and vapor hose
from the tank.
5. Disconnect the wires from the air purge
solenoid and tank temperature sensor.
6. Remove the two bolts securing the tank to
the scale.
7. Remove the tank from the scale.