Bartscher 900 MASTER Serie Mode D'emploi page 29

gas supply when the appliance is not being used. When the connection has been completed, the
tightness must be checked by using a leak-finder spray.
Electric connection
Before connecting the appliance, it is necessary to check that the voltage of the power supply
available corresponds to the voltage the appliance has been set for. In the event that they do not
correspond, it is necessary to modify the connection as shown in the electric diagram, if voltage
change is provided for. The junction boxes are situated behind the control panel of the top.
Furthermore, the efficiency of the earth connection must be checked, and also that the earth
conductor on the connecting side is longer than the other conductors, and that the connecting cable
has a wire bunch adequate for the power absorbed by the appliance and is at least type H05 RN-F.
As in international provisions, before installing the appliance a unipolar device must be
installed with a contact opening of at least 3mmwhich must not interrupt the YELLOW-
GREEN earth wire. The device must be installed near the appliance, it must be approved and have
adequate capacity for the absorption of the appliance (see technical features).
The appliance must be connected to the EQUIPOTENTIAL system. The connector is situated near
the end of the electric cable and is identified by a label with the symbol shown in fig. 8-pag. 4.
By using a safety thermostat for breakdown tensions there must observe what follows:
- According to the ruling normative law, the leakage of electric power for these kind of
appliances can have a value of 1 mA without limitations for the maximum for each kW of
installed power. Besides, there must take care that all the switches for breakdown found on
the market have a tolerance for the operating tension of less than the 50%; that's why there
must be chosen a suitable switch.
- Connect only a single appliance for each switch
- In some cases it is possible that the appliance after long periods of inactivity or in case of a
new installation, switches off during working. Most of the times the main reason is the moist
produced during the isolation. The problem can be easily resolved with a short pre-heating
bypassing the safety thermostat.
Checking gas tightness and pressure (fig. 9 -pag. 4).
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:
Pag. 28