Fault Finding - Gastrodomus FG11 Bedienungsanleitung

To adapt the appliance to another type of gas, replace the main injector, replace the by-pass screw of the
gas tap, regulate the clamp of the primary air and regulate the power to minimum with the by-pass screw
of the tap.
a) Replacing of the main injector and adjusting the primary air.
Carry out the following operations in series on the burner referring to table 2 and Fig. 5:
• Remove the pan supporting grid, the brass flame spreading, the body burner cover and the basin.
• Loosen clamp fixing screw V, pull clamp B inwards, unscrew and replace injector U with the injector
for the new type of gas installed.
• Regulate the primary airflow positioning clamp B at the right distance H for the new type of gas
installed.
b) Adjusting the minimum power
Carry out the following operations in series for the gas tap referring to table 2 and Fig. 6:
• Remove the knob and use a flat-bladed screwdriver to reach the by-pass screw BP of the tap
through the hole. Insert the screw of the correct diameter and adjust it for the type of gas according
to these instructions:
For G20 gas: adjust the screw of the by-pass nozzle until you find the correct minimum adjustment. Once
you have found the minimum, with the burner on, check that passing from the maximum to the minimum
position doesn't suffocate the flame or cause blowbacks of the main burner.
For G30/G31 gas: always screw the by-pass screw fully down.
ATTENTION - After adapting remember to:
• Apply an indelible sticker on the data plate with the data of the new installation.
• Fix the new seals on the regulated parts (injector, air clamp and by- pass screw of the tap).
• Perform a pressure test of the gas circuit and check for leaks.
Table 2
Main injector diameter
( mm)
1/100
By-pass screw
diameter ( mm)
1/100
Distance H of the
primary air (mm)
2.5 Replacing the main components
After a fault, you may have to replace a component. All the components can be reached after you have
removed the pan supporting grid, the brass flame spreading, the body burner cover and the basin.
a) Gas tap.
• Loosen the gas connections to the tap and in other words the capillary pipe of the thermocouple, the
gas pipe to the main burner and the gas supply pipe.
• Unscrew the two screws of the flange fixing the tap to the frame and disconnect the gas connections.
• Replace the gas tap and reconnect all the gas connections proceeding in the reverse order.
b) Safety thermocouple.
• Unscrew the gas connection of the thermocouple to the tap.
• Open the bracket fixing the thermocouple bulb after having removed the screw.
• Replace the safety thermocouple and reconnect all the connections in the reverse order.
c) Main burner.
• Remove the bracket fixing the thermocouple from the burner body after having removed the two
screws.
• Unscrew the four screws fixing the manifold of the burner to the frame of the grill.
• Unscrew the injector and the fixing nut.
• Pull the main burner out and replace it.
• Reconnect all the connections proceeding in the reverse order.

2.6 Fault finding

Type of gas
G20 G30/G31
at 20 mbar at 28/37 mbar
235 160
Adjustable
5 Clamp open
60
11