Storage; Care And Maintenance - Rothenberger NITROGEN-KIT Bedienungsanleitung

After this short period of time and after having checked that there were no leaks, disconnect
the equipment until complete discharge
Using 950cc cartridges, it may be that the pressure in the bottle is insufficient to reach the test
pressure required by the system. Use a new bottle in order to reach the correct pressure test.
The residual contents in the bottle may be used for operations for which only a low pressure is
required (fluxing during welding) or to perform a successive pressurization at lower values.
2. Systems flushing
Make connections and prepare the 1689.01 flushing system (not available in Germany).
Connect the kit's hoses to the flushing system (open ball valve on the hose with (4) pressur
gauge).
Regulate the regulator over the Regulating knoband set up the pre-established value (in the
range 0,5 – 0,7 MPa). See user's manual for 1689.01
3. Fluxing with nitrogen during welding/brazing
The presence of oxygen during welding/brazing causes the forming of
oxides inside the hose, which are very noxious for the refrigeration and
conditioning systems. All this can be avoided with the usage of nitrogen.
Make connections as in the diagram.
After having made the connections and opened the pressure regulator at the lowest
pressure (0,5MPa), regulate the correct pressure value (~ 0,02 – 0,05 MPa) for welding by
means of the valve situated on the hose with gauge.
Close the valve on the bottle or disconnect the 950 cc cartridge after having completed the
operations and go on with disconnection.
4. Checking the correct calibration of pressure gauges and pressure switches
The kit being equipped with a pressure gauge with scale – 0,1 + 5,3 Mpa, class 1, it is possible to check
the correct calibration of pressure gauges (4) and pressure switches by connecting them to the ends of the
hose with pressure gauge.
2.5

Storage

The pressure regulator must be stored as a precision instrument. It must be stored in its
case so that to be protected from accidental shocks or from dust, oil, or any other impurity.
3

Care and Maintenance

•
Replacement parts are available on request. If you notice something wrong in
the regulator, which cannot be repaired following these instructions, send it
back to your distributor.
•
Do not clean the gauges glasses with petrol, solvents or detergents of any type.
Malfunctionings
- In case of malfunctioning (for ex. leaks from the gauges or from the safety valve), stop
using the pressure regulator and immediately close the bottle valve.
- If no damage can be seen on the outside of the regulator, we suggest to send it back to
your distributor, so that it can be checked and repaired.
Do not use the pressure regulator if there are the following malfunctionings
- The seal gaskets used for the connection to the bottle are damaged or missing.
- The regulator or some of its parts (gauge, input or output connection) are damaged or
contaminated by dirt.
- Joints are leaking.
- The safety valve regulation has been modified or gas is coming out of the valve.
Safety valve
For safety reasons, the pressure regulator is equipped with an overpressure valve.
In case of functioning defects, this valve lets the excess gas pressure flow towards the outside.
It is absolutely forbidden to modify the safety valve calibration.
10 ENGLISH