Oil Drain - Bosch ACS 553 Service Manual

Plumbing and Mechanical
Manifold
Service
Port
Recover Check
(T4)
Valve
(VU3)
Manifold
Flush Port
Check Valve
(VU5)
High Side
Low Side
Flush
Flush
OIL DRAIN PROCESS
During the Oil Drain process, the unit pressurize the accumulator until 1.1 bar. Then oil drain solenoid opens and
release pressure and oil (see application chart). The oil amount discharged is calculated in function of accumulator
depressurization time.
1 689 975 295 2021-04-13
Accum
Press
(P2)
Transducer
System Oil
Separator

Oil Drain

Solenoid
Filter / Drier
valve
(F2)
(S8)
Oil Drain
Bottle
Vacuum Pump
(PUMP)
Recover
Solenoid
Valve
(S11) Oil Inject
Solenoid
valve
(S14)
Oil Inject
Check Valve
(VU4)
Oil Inject
Bottle
Figure 4-9. Oil Drain
ACS 553, ACS 563 Service Manual
Tank
Check
Valve (VU1)
(P3)
High
Pressure
Switch
Oil
Return
Solenoid
Valve
(S13)
Compressor
(COMP)
Low Side
Press
Transducer
(P1)
Vacuum
Solenoid
Valve
(S9)
HS Inlet 2
Solenoid
valve
(S5-2)
HS Inlet 1
Solenoid
Valve
(S5-1)
High Low
Side Side
Gauge Gauge
(M2) (M1)
Low Side
High Side
Service Hose
Service Hose
(T1)
(T2)
84
Pressure
Air Purge
Relief
Solenoid
(V2)
Valve
Air
Diffuser
(S6)
Temp. Sensor
Internal
Tank
Tank Liquid
Solenoid
valve
(S7)
Tank Liquid Check
Valve
(VU2)
LS Inlet 2
Solenoid
valve
(S4-2)
LS Inlet 1
Solenoid
Valve
(S4-1)
Contamination
Port
(T3)
Robert Bosch GmbH