1 689 988 238
2012-11-06
|
Robert Bosch GmbH
Program description | ACS 651/751 | 107
en
6.11 Hose drain
Every time a vehicle A/C service is performed, it is nec-
essary to drain the refrigerant from the hoses.
1.
In the main menu, select "
Vehicle A/C Service
" and
press
E
.
2.
Select the operator name and press
E
.
3.
Select "
Additional Services
"
→
"
Hose Drain
". Press
E
.
The
Hose Drain
screen is displayed.
Warning - Risk of frostbite!
If refrigerant escapes, there is a risk of frost-
bite to the hands and body
.
¶
Carefully disconnect filling hoses as all
hoses can contain pressurized refrigerant.
4.
Turn the quick couplers in the counterclockwise
direction and detach the HP/LP couplers from the
service connections on the vehicle
.
5.
Press
to select "
Start hose drain
". To abort the
hose drain, press
c
.
"
The hose drain starts.
6.12 A/C performance test
The A/C performance test can be conducted to check
for effective cooling of the vehicle A/C system. The
diagnosis can be done before or after vehicle A/C ser-
vice. However, there could be a risk of change in the
of R134a quantity in the vehicle A/C system by a small
amount.
1.
In the main menu, select "
Vehicle A/C Service
" and
press
E
.
2.
Select the operator name and press
E
.
3.
Select "
Additional Services
"
→
"
A/C Performance
Test
".
4.
Press
E
.
The following screen is displayed.
5.
Wait till the clearing is complete. Then, connect the
HP and LP service hoses to the service connections
on the vehicle A/C system. Press
.
6.
Start the engine with the vehicle gear lever turned to
Neutral
.
7.
Switch on the vehicle A/C to
Maximum
(cooling to
maximum). Press
.
8.
Perform the A/C system test based on either of the
following as per the A/C or vehicle manufacturer’s
recommendation:
$
Grill temperature
$
HP and LP pressure gauge readings
9.
After the A/C system test is complete, turn off the
engine and the vehicle A/C system. Press
.
10.
Wait for two minutes.
The
Hose Drain
screen is displayed.
Warning - Risk of frostbite!
If refrigerant escapes, there is a risk of frost-
bite to the hands and body
.
¶
Carefully disconnect filling hoses as all
hoses can contain pressurized refrigerant.
11.
Turn the quick couplers in the counterclockwise
direction and detach the HP/LP couplers from the
service connections on the vehicle
.
Press
.
12.
Press
to select "
Start hose drain
". To abort the
hose drain, press
c
.
The hose drain starts.
