April 8, 2011 HN FAQ Memo, Version 3.0 Page 27 of 108
3.1.7 Correct mounting of the Air detector assembly, BD1,BD5,BD3 and BD4.
3.1.7.1 Important information: Keeping the BD dry.
The sensors may never be left wet or with drops of fluid on as this can cause system
failures.
If the inside of SI unit has to be cleaned it can be hard to avoid the sensors getting wet. If the sensors get
wet they have to be thoroughly dried.
BD3 and/or BD4 should be dismounted from the tube and dried with compressed air and a dry cloth.
Assemble as described in appendix 2
BD1 and BD5 should not be dismounted from the tube but carefully dried with compressed air and a dry
cloth. Take great care to blow away all fluid that is on the sensor beneath the tube.