Edition 3 April 2012 Mars/Mars Pro Service Manual
Page 13/59
10. PIR sensor. 9.001.000.087
The PIR is used when fully automatic operation of the cabinet is required.
The cabinet is run at reduced speed and when the operator starts to work in the cabinet the
PIR sensor detects the movement and automatically sets the fans to run at normal speed. If no movement is
detected for 10 minutes then the fans automatically revert to reduced speed
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