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BRU3 MANUAL
BRU3 MANUAL, Doc.no: 155 16-ANNA 805 08 Uen, Rev H, 2003-02-07
8
Heating unit
The FE Heating Unit (FHU) is located in the FE Case Top Frame (FTF). The
FHU ensures that the temperature inside the BRU3 is within set limits.
The unit consists of the FE Heating Board (FHB), including a heating regulator,
a heating element and an overheating protection device.
When the temperature on the surface of the FTF is about 25 °C or lower, the
FHU starts heating the BRU3.
If the temperature rises to about 55 °C due to a temperature regulating failure,
the overheating protection will cut off the power supply to the FHU.
