Bosch ACS 653 Repair Instruction page 118

Parts and Components
S Y S T E M O I L S E PA R AT O R / H E AT
EXCHANGER— Heat exchanger with high-side
coils that provide internal heat to the canister
causing saturated vapor and accumulated liquid
refrigerants to evaporate. This process prevents
liquid refrigerant from entering the compressor
and separates the refrigerant oil.
TANK TEMPERATURE SENSOR— Monitors
the temperature inside the ISV.
TRANSDUCER, ACCUMULATOR (SYSTEM
OIL SEPARATOR) — Measures the pressure
within the system oil separator.
SP00D00624 2021-04-08
ACS 653, ACS 663 Service Manual
TRANSDUCER, AIR PURGE— Measures the
pressure within the ISV.
TRANSDUCER, LOW-SIDE— Measures the
pressure of incoming refrigerant from the A/C
system. Pressure readings are then relayed to
the control board.
VACUUM PUMP— Pump designed to removed
moisture and air from an A/C system. Also aids
in the recovery process by performing a deep
recovery of A/C system.
118
Robert Bosch GmbH