Filling The Internal Refrigerant; Tank; Viewing System Information - Bosch ACS 255 Original Instructions Manual

en 12 | ACS 255 | Commissioning
4.5

Filling the internal refrigerant

tank

Before the ACS 255 can be used, the internal refriger-
ant tank must be filled with R134a.
The refrigerant can be procured from the local gas sup-
plier. The refrigerant is normally stored and transported
in tanks with connection fittings.
If cylinders without dip tube are used, the liquid ports
of the external cylinders should be connected to the
internal refrigerant cylinder. The cylinder should be
placed in an inverted position during the filling process.
If external cylinders with dip tube are used, the cylin-
ders can be placed in an upright position.
1. Power off the ACS 255.
2. Disconnect the power cable from the mains supply.
3. Apply the brakes on the rear wheel.
4. Connect the adapter to the connection on the
external refrigerant tank.
5. Connect the HP quick coupler of the ACS 255 to the
connecting adapter on the external refrigerant tank.
6. Open shut off valves on the external refrigerant tank.
 The pressure of the external refrigerant tank is
displayed on the HP manometer.
7. Connect the power cable to the mains supply.
8. Turn on the master switch.
9. In the main menu select "Vehicle A/C Service" >>
"Additional Services" >> "Internal Bottle Fill". Alter-
nately, press c and select "Additional Services" >>
"Internal Bottle Fill".
i
To ensure reliable operation, it is recommended to
use the optimum refrigerant quantity. The optimum
refrigerant quantity for the ACS 255 is 4 kg - 7 kg.
If the quantity is too less, you may not be able to
recharge the refrigerant during service. If the quan-
tity is too high, you may not be able to recover the
refrigerant during service.
10. Enter the quantity of R134a to be filled and
press E.
 The filling of the internal refrigerant tank starts.
11. After the internal refrigerant tank is filled, close the
valves on the external refrigerant tank. Press .
12. Disconnect the adapter from the external tank.
Press .
13. Press  to execute the hose drain.
"
After the hose drain is completed, the internal refriger-
ant tank is filled. The quantity of refrigerant filled is
displayed.
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F 002 DG9 432 2014-12-19
4.6

Viewing system information

¶
Press the i key.
"
The system information is displayed.
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To dismiss the information screen, press the i key
again.
Bosch Limited