Refrigerant Preparation - Bosch ACS 810 Repair Instructions

8.5

Refrigerant preparation

1. Press the <MENU> key.
2. Select <R134a PREPARATION> and confirm with E.
"
ACS 810 starts internal preparation of the refrigerant.
"
EV5 and EV6 are opened and the compressor (6)
starts.
M2
HIGH
T2
M1
LOW
T1
F2
6
C
Des. Description
1 Fresh oil tank
2 Vacuum pump
3 Expansion valve
4 Evaporator/oil separator
5 Compressor oil separator
6 Compressor
7 Internal refrigerant cylinder
8 Refrigerant cylinder scale
9 Used oil bottle
10 Heat exchanger
11 Refrigerant pump
T1 Low pressure hose
T2 High pressure hose
M1 Low pressure gage
M2 High pressure gage
M3 Internal refrigerant cylinder pressure gage
F1 Coarse filter
Robert Bosch GmbH
EV10
P
11
P2
HP
5
4
10
EV7
9
Service phases | ACS 810 | 17 |
i
In that way, refrigerant is sucked from internal
refrigerant cylinder (7) and is conveyed through the
filter F1, the expansion valve (3), the Evaporator/ oil
separator (4) until reaching the internal refrigerant
cylinder (7) again, as it happens in the recovery stage.
i
Internal preparation of the refrigerant is the same
process that the ACS 810 performs in the recovery
phase to clean the refrigerant recovered from the
vehicle air conditioning system.
P1
EV1
EV8
VU1
1
3 F1
V5
V1 V3
8
Des. Description
F2 Combi filter
VU1 Oil non-return valve
EV1 Vacuum solenoid valve
EV3 Flow solenoid valve
EV5 Recovery solenoid valve
EV6 Filling solenoid valve
EV7 Oil drain solenoid valve
EV8 Oil injection solenoid valve
EV10 Refrigerant pump by-pass solenoid valve
P1 Pressure sensor
P2 Pressure switch
V1 Tank vapour side hose valve
V2 Tank liquid side hose valve
V3 Tank vapour side valve
V4 Tank liquid side valve
V5 Safety valve
V6 Non condensable drain valve
EV3
EV5
EV6
2
P
V6
V4 V2
7
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en
M3