Hose Flush - Bosch ACS 561 Repair Instructions

Plumbing and Mechanical

HOSE FLUSH

Accumulator
Transducer
Heat Exchanger/
System Oil
Separator
Oil Drain
Solenoid
(S6)
Service
Port
FRONT PANEL
MANIFOLD
HOSE FLUSH
Hose Flush
MANIFOLD
Check
Valve
HOSE FLUSH
Flushing of the hoses is required if the next vehicle to be serviced contains a different type of A/C system oil than
the previous vehicle serviced. During the Hose Flush process, the compressor and tank liquid solenoid are on, the
high- and low-side valves are open, and the charge and oil return solenoids operate intermittently to flush hoses of
refrigerant and any residual oils.
SP00D00517 2018-07-11
High Pressure
Filter/Dryer
Compressor
(COMP)
Oil Return
Solenoid
(S7)
Vacuum Pump
(PUMP)
Oil Drain
Bottle
Low Side
Transducer
Recover Recover
Solenoid
Check
(S1)
Valve
High Side
Gauge
Oil Inject
Solenoid (S5)
Oil Inject
Check Valve
Oil Inject
Bottle
High Side
Service Hose
Figure 4-13. Hose Flush
Pressure Relief
Switch
Compressor
Oil Separator
Tank Liquid
Solenoid
(S4)
Vacuum
Solenoid
(S2)
High Side
Low Side
Ball Valve
Ball Valve
Low Side
Gauge
BULKHEAD
INJECTION
MANIFOLD
HS LS
Bulkhead Bulkhead
Service Hose
80
ACS 561 Service Manual
Air Purge
Pressure Relief
Vapor
Check
Valve
Liquid
Ball
Valve
Internal
Storage
Vessel
Charge
Solenoid
(S3)
Charge Check
Valve
Suction
Discharge
Intermittent
Energized
Tank
Pressure
Low Side
Robert Bosch GmbH