Filling Internal Refrigerant Cylinder - Bosch ACS 752 Original Instructions Manual

en 48 | ACS 752 | Initial commissioning
7.6

Filling internal refrigerant cylinder

WARNING – Risk of frostbite from escap-
ing refrigerant
Refrigerant causes severe frostbite on the
skin.
¶
Check the service hoses for damage.
¶
Firmly connect the service quick-release
couplings to the service hoses.
¶
Wear safety goggles.
¶
Wear protective gloves.
i
Before the ACS 752 can be used, the internal refrig-
erant cylinder must be filled with liquid refrigerant.
Make exclusive use of R134a refrigerant.
i
The refrigerant can be obtained from your gas sup-
plier. It can be stored normally and transported in
vessels with connection fittings.
!
The internal refrigerant cylinder should only be re-
placed if it is severely damaged. The internal refriger-
ant cylinder must always be filled using an external
refrigerant cylinder.
!
During filling, the external refrigerant cylinder must
be firmly positioned and the operator must ensure
that the service hoses are safely routed to avoid the
danger of the external refrigerant cylinder falling
over.
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The optimum quantity is approx. 5 - 10 kg.
!
Do not interrupt the automatic filling process prior
to automatic termination by the ACS 752.
!
ACS 752 automatically empties the service hoses
and internal lines after charge of the internal refrig-
erant cylinder using suction. This additional quantity
causes the actual filling capacity to deviate + 500 g –
700 g from the filled in refrigerant quantity.
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S P00 D00 159 2019-03-01
MENU
<MENU> key
!
Observe the ACS 752 menu prompting.
1. Screw the adapter onto the external refrigerant
cylinder.
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Connection types of external refrigerant cylinder
$
External refrigerant cylinder with one valve: Al-
ways turn this external refrigerant cylinder upside
down when filling the internal refrigerant cylinder.
Screw the adapter onto the connection of the
external refrigerant cylinder.
$
External refrigerant cylinder with two valves:
Screw the adapter onto the LIQUID connection of
the external refrigerant cylinder.
2. Connect the LP service hose to the adapter on the
external refrigerant cylinder.
3. Open the valve on the external refrigerant cylinder.
4. Press <Menu>.
5. Press <2>for "Functions".
6. Select <4> for "Tank filling".
 The max. quantity to be filled is displayed.
7. Enter filling capacity with <0 – 9> and confirm with
<OK>.
 Filling process starts.
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The current pressure inside the external refrigerant
cylinder is indicated on the high/low-pressure gauge.
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ACS 752 ends the filling process when the entered
refrigerant quantity is reached.
8. Close the valves of the external refrigerant cylinder
and of the LP service hose.
9. Confirm with <OK>.
 Automatic emptying starts.
 Recovery phase completed (after approx. 2-4
minutes).
10. Disconnect the LP service hose and adapter from
the external refrigerant cylinder.
"
Internal refrigerant cylinder is filled.
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Call up start screen to check refrigerant quantity in
internal refrigerant cylinder and press <OK>.
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Return with <ESC>.
Robert Bosch GmbH