INFICON UL1000 Helium leak detector - Manual (Page 107)

Maintenance Work
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• When inserting the new air filter insert, note the direction of the air flow. It is
indicated in the figure above
Fig. 9-2 by a black arrow.
Notice: The side of the filter insert marked „clean air side" or the white surface of
the filter insert must point in the direction of the fans.
• Push the filter insert into the guide and place the covers back on. To close the
instrument, insert the covers and press these on.
Fig. 9-2 Replacement of the air filter in the chassis wall
Item Description Item Description
a Air filter cut out 2 Air filter guide
1 Air filter insert 3 Ejection bore (rear)
a
a
2
1
3