Filling Refrigerant - Bosch ACS 810 Repair Instructions

8.7

Filling refrigerant

i
The refrigerant in the internal refrigerant cylinder is
used for filling the vehicle air conditioning system.
i
Refrigerant can only be added to a vehicle air
conditioning system under a vacuum. The vacuum
phase must therefore be performed before filling.
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 | 19 |
1. Press the key
 EV3, EV6 and EV10 are opened.
 Refrigerant pump (11) will start.
 Refrigerant flows from the internal refrigerant
cylinder through valves V4 and V2, through the
solenoid valves EV3, EV6 and EV10, the HP valve
(when filling on the high pressure side) and
along the service hose T2 into the vehicle air
conditioning system.
2. The filling quantity is checked by the scale (8),
which end the filling process after the quantity
previously entered in the service process.
EV3
P1
EV1
EV8
VU1
P
1
3 F1
V5
V1 V3
7
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
.
EV5
EV6
M3
2
V6
V4 V2
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