VALVE SIT 826
The main feature of this valve is being able to have two power units in the oven, therefore more even cooking, more accurate
temperatures and a longer service life for the oven.
The adjustments are made according to the data of Tab.4.6.1.5.1. The inlet and outlet pressures should be checked with a
pressure meter (in mbar) at the test points on the valve. Alternatively, the pressure gauge can be connected to the test point on
the ramp (inlet) and on the nozzle (outlet).
Adjusting the outlet pressure at the nozzle:
Maximum pressure
Connect the oven to the gas socket, on the display set min. 250°C (to prevent the oven reaching the set temperature before
finishing the adjustment) on convection, manual, and Start.
Take off the cap C, turn the nut B (use a 10 mm wrench) clockwise to increase the pressure,
anticlockwise to decrease it. Set the pressure to the value of Table 4.6.1.5.1.
Caution
: Do not screw too far clockwise as this could irreparably damage the valve
(see outlet pressure in Table 4.6.1.5.1).
Minimum pressure
Make this adjustment only after completing the maximum pressure adjustment.
Disconnect the blue wire of the black cable leaving the SMD valve (central valve) from the male-female fast-on connector to
permit
the valve to work only with the minimum pressure.
Keeping the nut B locked with the wrench, turn the screw A (cross-head screwdriver) anti-clockwise to decrease the pressure
or vice versa. The outlet pressure should be adjusted according to the table.
Fit the protective cap C back on, reconnect the blue wire in the male-female fast-on connector: the valve is adjusted according
to the
chosen gas.
Check: Cool the oven, set convection 150°C, press Start and, with the pressure meter, check that the
pressure at the nozzle is:
- maximum (see Table 4.6.1.5.1) when the temperature shown on the display is < 145°C
- minimum (see Table 4.6.1.5.1) when the temperature shown on the display is between 145°C and 149°C.
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