Bosch ACS 653 Repair Instruction page 102

Plumbing and Mechanical
ACS 653, ACS 663 Service Manual
RECOVERY PROCESS
During the first stage of the recovery process, the fan, compressor, HS and LS inlet solenoids, recovery solenoid,
oil return solenoid are activated (see application chart). Recover and oil return solenoids are activated intermittently.
Recovery stops when -0.45 bar is reached, plus 15 seconds.
Figure 4-10. Recover
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SP00D00624 2021-04-08 Robert Bosch GmbH