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4.1 Boards block and FRU Identification
Once extracted from the casing the boards form a compact block.
According to the identification number of the FRU, it must be located in the stack according to the
following plan:
Replace the identified card and reassemble the reverse of disassembly (no need a screwdriver to clip).
Do not press the CO2 sensor, as this may cause it to be decalibrated.
4.2 Changing sensors with limited lifespans
In order to simplify maintenance, CO2, VOC and Particles sensors can be changed together. Refer to the
previous chapter to identify them.
VOC sensor module
Single or dual band CO2 sensor
Motherboard
Interconnection board.
Particle sensor board
power supply board.
