DA 7440 User Manual v.1.1 Aug 2015
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4. The air purge membrane can be removed and cleaned separately if needed, by hand or in
dishwasher.
5. Attach the air purge by fitting its side to the instrument and rotating it counterclockwise.
8.4 Replacing the lamp
The DA 7440 instrument halogen lamp has a limited life, estimated to 12000 hours. Replace it by
following the listed steps.
Warning, the lamp could be a hot surface! Before replacing it must the power cable to
the instrument be disconnected and lamp cooled down.
1. Disconnect the power cable.
2. Remove the six screws on top of the instrument (Torx T10).
3. Remove the top plate and gasket.
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