Viewing System Information - Bosch ACS 251 Original Instructions Manual

A/c service unit

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Table Of Contents

Table of Contents

12 | ACS 251 | Commissioning

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 251.

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 251 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.

Press the MENU key on the keypad.

10. Select " Add. Services" >> "Tank Fill".

11. Follow the instructions on the screen.

To ensure reliable operation, it is recommended to

use the optimum refrigerant quantity. The optimum

refrigerant quantity for the ACS 251 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.

12. Enter the quantity of R134a to be filled and

press E.

 The filling of the internal refrigerant tank starts.

13. After the internal refrigerant tank is filled, close the

valves on the external refrigerant tank.

14. Disconnect the adapter from the external tank.

15. Follow the screen instructions 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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