Safety Thermostat - Blomberg BWOS 30100 Service Manual

BWOS 30100 SERVICE MANUAL
connected in parallel with it.
In the regular cooking mode when the read temperature at the surface of the metal
sheet in under 158 °F (70 °C) the power is flowing trough the resistor and it feeding
the cooling fan with a voltage AC 93V .
If the temperature of 158 °F (70 °C) is depassed, the thermostat is closing the circuit
and the resistor is by-passed and now we can read at the poles of the cooling fan
motor the full voltage of installed AC 120V and the RPM of the cooling fan will almost
double.
The reset is automatic when the temperature at the surface of the metal sheet
decreases under the 122 °F (50°C) and the cooling fan is reducing the RPM at the
manufacturer factory set-up.
RPM : rotation per minute

2.9.5 Safety Thermostat

The function of the safety thermostat is to protect the of the oven from over heating in
the event of a malfunction of the cooling fan.
Description: In the regular cooking mode when the read temperature at the surface of
the metal sheet in under 311 °F (155 °C) the power is energizing the electronics and
the heating elements as well.
In the event that the temperature is rising over the 311 °F (155 °C) limit, the
thermostat will switch mechanically from off position to on position and all of the
heating elements will be cut off from the power.
All of the electronics will be cut off.
The reset is manual when the cooling fan was replaced or the oven problem was
solved and the temperature is in the right functioning parameters the red button on
the top of case of thermostat must be pressed to reset it (see picture on the previous
page).
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