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6.5
Recharging the A/C system of the
vehicle
WARNING: to prevent injuries while work-
ing with the refrigerant, read and follow
the instructions and warnings in this man-
ual, and wear protective clothing, such as
safety glasses and gloves.
1. Call up the Main Menu.
2. Select
.
3. Enter the service data and select
vehicle data through the database. confirm with
(see chapter 6.1).
4. Enter the quantity of refrigerant to be charged with
the numeric keypad.
5. Select the "type of charge" with the Down arrow
button and set with
charge the vehicle (high pressure side, low pres-
sure side or both sides).
6. Select
to continue.
7. With
select if you want to perform the oil injec-
tion. If you set not to perform the oil injection, go
directly to phase 10 displaying.
8. Enter the amount of oil to be charged with the
numeric keypad.
i
The display shows the amount of oil/dye available
for the injection. Into the bottles is actually pres-
ent a slightly higher quantity that includes a safety
margin of about 30 g.
9. Select the "oil type" with the Down arrow button
and set with
the oil to be charged (PAG or
POE).
10. Select
to continue.
11. Enter the amount of UV dye to be charged with the
numeric keypad.
12. Select
to continue.
13. ACS 753 displays a dedicated message that asks
to the operator whether to perform the hoses flush-
ing.
« Select
to proceed or
hoses flushing.
i
Follow the on-screen instructions to perform the
hoses flushing procedure.
14. When the message appears, connect both service
hoses to the vehicle service connections and open
the valves of the service hoses turning the ring nuts
clockwise.
Robert Bosch GmbH
to set the
the hoses to be used to
not to perform the
Instructions for use | ACS 753 | 59 |
!
The charging function, if accompanied by oil injec-
tion, can only be carried out on the high pressure
side or on both sides.
i
In systems provided with only a low pressure con-
nection, after charging, wait at least 10 minutes
before operating the air conditioning system of the
vehicle.
i
Fill only through the high pressure connection (if
possible) or always follow the vehicle manufactur-
er's instructions.
!
Always follow the vehicle manufacturer's instruc-
tions before changing the amount of oil.
!
Prior to the addition of UV dye, it is absolutely
necessary to check if an air-conditioning leak test
with UV contrast agent is permitted according to
the vehicle manufacturer.
i
New oil and UV dye can only be added in a vacuum
air conditioner. Prior to the addition of oil/UV dye,
it is necessary to create a vacuum.
15. Select
to start the charging procedure.
« When the charge cycle is close to the desired
weight value, the station slows down, alternat-
ing charging and settling phases, etc.
i
At this point, if the vehicle is moved or hit, it is
possible to obtain an inaccurate charge.
16. When the message appears, close the service hose
connections turning the ring nuts counter-clock-
wise. Disconnect the service hoses from the A/C
system and connect them to the station flushing
connections.
17. Select
to start the hoses cleaning.
18. ACS 753 displays, at the end of the hoses clean-
ing, a dedicated message that indicates to the op-
erator the procedures to be performed to start the
pressures test (see chapter "Pressures test").
« Select
to proceed or
pressures test.
19. At the end the ACS 753 displays a screen with the
charge result report.
i
Select
to print the overview.
Select
to return to the Main Menu.
20. The A/C system of the vehicle at this point is ready
for use.
en
not to perform the
|
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2020-12-01
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