Foster Gas Oven KS 90 - Manual (Page 12)

ADJUSTING THE THERMOSTAT MINIMUM SETTING
This operation is performed with the oven in the unit and after the
electrical and gas connections have been made by qualified personnel.
The operation is necessary when switching from one type of gas to
another (from natural gas G20 to liquid gas G30) in order to guarantee
a minimum temperature of around 150°C.
Sequence with metal dashboard
• open the oven door (the burner will ignite only with the door open);
• remove the bedplate (base) of the oven;
• operate the oven at maximum temperature for at least 20+30 minutes;
• once the oven is on, close the door;
• reset the thermostat knob to 150°C;
• remove the knob A;
• insert a screwdriver into hole B parallel with the thermostat shank
and adjust the by-pass until you obtain a reduced but stable
flame.
This operation must be performed with the oven door closed.
• Use a
flat blade screwdriver to adjust the by-pass screw.
Simply unscrew the by-pass to adjust the minimum setting when switching
from liquid gas to natural gas.
• For operation with G30/G31 (LPG) the by-pass adjustment screw must
be fully tightened.
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