Bosch ACS 763 Notice Originale page 71

6.12 Test N2H2 or N2
To locate leaks using an external nitrogen cylinder or
mixture of nitrogen and hydrogen, proceed as follows:
1. Call up the Main Menu.
2. Select
.
3. Select
.
4. Select Functions.
5. Select Nx Test.
6. Enter the service data and confirm with
(see chapter 6.1).
7. Select among:
$
N2H2 Leak Check
$
N2 Leak Test
1
Fig. 19: Test N2H2 or N2
1 Input port N2H2 or N2
i
Before and after use of N2H2 / N2, the machine
performs an automatic vacuum to minimize the risk
of cross contamination. The software is also able to
handle a sudden shutdown of the machine. At the
machine restart make sure that the N2H2 / N2 still
present is discharged and drained before any other
operation with the refrigerant.
6.12.1 Installation and connection of the external
cylinder of N2H2 or N2
The SP00101740 kit is an installation kit for the N2H2
or N2 cylinder.
1
2
2
Fig. 20: N2H2 or N2 cylinder installation
1 Bracket for N2H2 or N2cylinder
2 Clamp for N2H2 or N2 cylinder
Robert Bosch GmbH
Instructions for use | ACS 763/863 | 71
1. Install the bracket inserting the 4 tabs on the
bracket into the 4 holes on the rear of the machine
and push down to engage it.
!
If fitted correctly, the service door must not open
to ensure operator safety when the cylinder is in
position.
2. Place the cylinder on the bracket fastening it to the
supplied bracket.
CAUTION: The commercial cylinder must
be equipped with a pressure regulator
that allows adjustment around 8 - 12 bar.
Recommended commercial cylinders:
€
Height = 30 - 60 cm
€
Diameter = 7 - 15 cm
€
Weight = max 12 kg
CAUTION: Make sure that all the units
connected before the pressure reducer can
withstand the maximum operating pressure
indicated on the cylinder data plate.
Make sure that all the units connected
after the pressure reducer can withstand a
maximum operating pressure of 14 bar.
CAUTION: Before connecting the regulator
output to the N2H2 or N2 input port on the
machine, make sure that the regulator is set
at a pressure less than 14 bar and that the
cylinder valve is closed.
3. Connect the regulator output to the N2H2 or N2
input port on the machine.
CAUTION: Before each use of the N2H2 or
N2 tightness test function, carefully check
the correct positioning and fastening of
the cylinder as well as the tightening of the
connection hose.
en
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SP00D00490 2020-01-08