Service Handbook OEB/OES/OGB/OGS
2.5 Functioning of the cooking programmes
2.5.2a Steaming under 100°C in units with steam generator (OEB/OGB)
1 = Pressure compensation valve
2 = Fan wheel
3 = Oven chamber
4 = Steam and air circulation
5 = Bypass pipe
6 = Convection heat exchanger
7 = Demoisturizing tub
8 = Hydraulic seal in condenser
9 = Demoisturizing nozzle
10 = Condenser cooling
11 = Convection heating
12 = Fan motor
13 = Steam generator heating
14 = Steam generator heat
exchanger
15 = Back flow protection
16 = Water level probe
17 = Steam generator
B1 = Water level probe
B3 = Condenser temperature probe
B4 = Steam generator temperature
probe
B5 = Bypass temperature probe
= active in this cooking programme
= not active in this cooking programme
= can be active
B6 =
Oven temperature probe
B10 = Core temperature probe
Y1 = Solenoid valve "condenser cooling"
Y2 = Solenoid valve " demoisturizing "
Y3 = Solenoid valve steam generator
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Information:
In this temperature range the oven 3, as in Steaming at 100°C, is heated only by
means of the water evaporated in the steam generator 17 .
i
In electric units, the steam generator heating 13 is controlled via the oven
temperature probe B6. 2 °C before reaching the nominal temperature, K1 switches
a part of the heating off. Via K2 and K3 the oven is further heated with reduced
heating until the set nominal temperature is reached
In gas units, the steam generator burner 14 is also controlled only via the oven
temperature probe B6.
In this programme, the fan motor 12 will be pulsed within a pre-set temperature of
30 - 99 °C via contactors K5 and K50 (reverse operation)
With a constant activation time of the fan 12 (normally 2 seconds) the length of the
pause can be extended from the default value of 60 seconds to 240 seconds
depending on the oven temperature.
The programme is stopped automatically when the time or the pre-set CTC (Core
temperature probe B10 ) temperature is reached.
AS/11-2011 2_05_02e_Steaming under 100°C_b
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