Bartscher 900 K4 series Bedienungsanleitungen Seite 45

Furthermore, it is necessary to check that the earthing wire is efficient, that the earth conductor on
the connecting side is longer than the other conductors, that the connecting cable has a wire bunch
adequate for the power absorbed by the appliance, and that the connecting cable is at least type H07
RN-F. As in international provisions, before setting up the appliance a unipolar device has to
be installed with a contact opening of at least 3mm that must not interrupt the YELLOW-
GREEN earthing wire. This device has to be installed near the appliance, has to be approved, and
has to have adequate capacity for the absorption of the appliance (see technical features).
The appliance has to be connected to the EQUIPOTENTIAL system. The connector is situated near
the end of the electric cable and it is identified by a label with the symbol shown on fig. 8 (p. 5).
While using a safety thermostat for breakdown tensions, it is necessary to note what follows:
- According to the normative law in force, the leakage of electric power for this kind of
appliances can have a value of 1 mA without limitations for the maximum for each kW of
installed power. Besides, it must be noted that all the switches for breakdown to be found on
the market have a tolerance for the operating tension of less than the 50%; therefore, a
suitable switch has to be chosen.
- Connect only a single appliance to each switch.
- In some cases, after long periods of inactivity or in case of a new installation, it is possible
that the appliance switches off during the setting-up. The main reason is usually the moist
produced during the isolation. The problem can be easily solved through a short pre-heating
bypassing the safety thermostat.
Checking gas tightness and pressure (fig.9 – page 5)
Before proceeding to check the pressure, it is necessary to check the tightness of the gas installation
up to the nozzle with a leak-finder spray to ensure that no damage has been done to the appliance
during transportation. Then it is possible to proceed with checking the inlet pressure, which is done
by means of a gauge for liquids, either a "U" gauge or an electronic gauge with a minimum
definition of 0.1 mbar. To carry out the reading, the screw (1) must be removed from the pressure
outlet (2) and the rubber pipe of the gauge connected. Open the gas supply valve of the appliance,
check the pressure output and close the valve. Remove the pipe of the gauge and put back the
screws correctly into the pressure outlet. The pressure valve must be within the minimum and
maximum values shown below:
If the pressure reading is not within the limits of the table, find out the cause. After solving the
problem, check the pressure again.
Type of gas
G20 (Natural gas)
G20 (Natural gas)*
G25 (Natural gas)
G25.1 (Natural gas)*
G30 (Butane) (3B/P)
G30 (Butane) (3+)
G30 (Butane) (3B/P)
G31 (Propane) (3B/P)
G31 (Propane) (3P, 3+)
G31 (Propane) (3B/P)
Pag. 45/68
P P P
n min MAX
[mbar] [mbar] [mbar]
20 17 25
25 20 30
25 20 30
25 20 30
28-30 25 35
28-30 20 35
50 42,5 57,5
28-30 25 35
37 25 45
50 42,5 57,5