Operating instructions

4 Main switch module with fresh air control
The main switch module contains:
o main switch to select the working mode
o three signal lamps for display of the oven status
o
g p py
slide knob for fresh air control
o Main switch in position 0:
oven is shut down
o Main switch in position I:
continuous operation
o Main switch in position ©:
Operation with timer (special equipment)
Green: wed: Yellow:
ready for operation fault indicator oven is heating
fresh air
Tr:
— 3
""5
"6
Flap closed: virtually no through ventilation.
Intermediate positions: the air in the camber is renewed to a
limited extent.
Maximum fresh air ventilation, but no complete change of air
within the chamber (in ovens with an air turbine by max.
rotation speed).
UM 200-800/SM 200-400, ULM/SLM 400-800