CB (E7) 06/2018 Page 145/174
After 8760 operating hours or two years the following message appears:
After confirmation with the Confirm icon, the
message window will pop up again every two
weeks until it is reset by BINDER Service.
22.2 Checking the humidity system fan
The user should regularly perform the following checks:
Hold a sheet of paper in front of the ventilation silts at the bottom rear of the chamber. If the sheet of
paper is suctioned inwards, the fan operates correctly. When opening the door, the fan automatically
turns off.
22.3 Gas inlet fine filter
When the chamber is in operation, the incoming gas passes through a fine gas filter (aseptic filter,
filtration efficiency 99.99 %, particle size 0.45 µm).This fine filter prevents dirt accumulating in the gas
inlet valves and the tubes leading into the inner chamber, which could be in the gas cylinder or in the
supply tubes.
When using gas with a technical grade of 99.5 %, we recommend changing the fine gas filter once a year.
Please consult BINDER Service. When using gases with less pureness, the changing intervals should be
shorter.
22.4 Replacing the CO
2
sensor
Pull the power plug.
Remove the cover on the chamber rear:
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