Name Date Designation
Prepared
JF 05.07.13
Service Manual BB 150
Index Name Date
Document No. Page
File
50078923_04_CN 50 079 823 31/ 31
4.8 FAN SYSTEM AND ERRORS
Short description:
DC motor (nominal voltage: 24 V; operating voltage: 12 V) mounted on the sensor
block. Located outside the sample chamber.
The fan speed is adjusted to the various operating modes by pulse package control:
Incubation mode: Low speed
Decontamination mode: Maximum speed
The fan runs continuously.
After a mains reset or when the door is closed, the fan runs at maximum speed for 2
sec., even in the incubation mode.
Fan control
Errors in the fan system
Error
code
Faulty function Inspections and tests Possible
corrective
actions
- Fan not rotating. LED LD1 on the sensor
board must be flashing or lit.
Check the solder
connections.
Replace the
sensor block.
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