2. Test that the RCCB works correctly by pressing the test button.
● If the RCCB does not trip when the test button is pressed, this indicates that it has failed. The
R
CCB must be replaced for safety reasons; call your service representative to remove and
replace the RCCB.
● If the RCCB trips, this indicates it is working correctly; reset the RCCB to its normal on state.
Check that the processing station is correctly earthed
Check that the resistance between any metal part of the processing station’s internal chamber and the
building’
s earth is less than 1 Ω.
Replace the dust extractor filters
The following steps provide the complete procedure for this topic.
1. Start the replacement from the front panel, when requested.
2. Clean the door with an explosion-protected vacuum cleaner.
3. HP recommends cleaning the filters through the door grid, to avoid splashing the material when
extracting the filters.
4. Ensure that the build unit is inserted.
Check that the processing station is correctly earthed 297
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