Service Handbook OEB/OES/OGB/OGS
2.4 Safety switches (parallel to cooking programmes)
2.4.3 Electrical safety switches
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1 = Main co
ntactor 2 = Control module (SM) or Gas module (GM)
3 = Steam generator automatic firing N21
4 = Convection automatic firing N20 and
N22
5 = Gas valve Convection burner
6 = Gas valve Steam generator burner
Information:
The electronic controls are completed through the following electrical safety
switching organs:
Electric units
The capillary probe with safety thermostat B7:
switches the main contactor K0 1 off when a critical oven temperature is
exceeded (from STB B7 no error code is produced). Thereby all other
contactors are switched off. The capillary probe is fastened outside the oven
on the unit cover or the side panel (Service area) under the insulation.
Gas units
The capillary probe with safety thermostat B7.1:
switches the gas valve in the automatic firing N20 and N22 4 off . Thereby the
blowing burner U20 and U22 is no longer supplied with gas and switches off.
From STB B7.1 alone, no error code is produced, the error is registered from
the automatic firing and sent to the controls The capillary probe is fastened
outside the oven on the unit cover or the side panel (Service area) under the
insulation.
Electric units Gas units
i
AS/11-2011 2_04_03e_Electrical safety switches_b
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