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6. Operation/using for the first time
Operating the fan of the Airmix™ is simple: if it is connected to the power supply it will start
ventilating, if it is disconnected it will stop ventilating. It is possible to set the speed by adjusting the
voltage at the plug with something like a control transformer, but this is not part of the Airmix™.
6.1 Gear-rack drive
The drive (figure 16) of the valves must be controlled by the climate computer. A 3-core cable exits
the drive. Core number 1 is neutral, and cores number 2 and 3 respectively open and close the linear
gear-rack drive. 24 V AC 50/60 Hz. 24 V DC.
Figure 16 Gear-rack drive
Figure 17 Gear-rack drive
Connection diagram
7. Maintenance
When servicing the Airmix™, the fan plug must be removed from the socket, and the drive
disconnected, to prevent unexpected and unwanted starting of the fan or linear drive.
The Airmix™ requires a minimum of maintenance:
Keep the inlet side of the fan free of foreign objects and dirt.
If the fan blades, fan housing, or aluminium housing of the Airmix™ are dirty, wipe down with a
damp cloth.
Replace the capacitor after 10,000 operating hours. This will help maintain the correct speed and
avoid excessive power consumption (reduced efficiency).
8. Failures and repairs
Experience has shown that failures are virtually inexistent. What can happen in practice is that the
thermal protection of the fan is triggered due to an internal defect, but if this does happen, it means
that the fan has reached the end of its service life and must be replaced.
If the Airmix™ valves do not move to the desired position, it means the linear gear-rack drive is
defective or a valve has jammed. Defective drives must be replaced. The valves can be manually
opened or closed if the drive is unblocked (see unblock button in figure 12). This allows the position
where the valve is jammed to be determined and fixed.
9. Disassembly
Check that the plug is disconnected from the power supply and the linear drive is disconnected, to
prevent unexpected and unwanted starting of the fan or the valves opening or closing. Make sure the
workplace is safe, then remove the self-locking nuts of the U-clamps or the fan. Depending on what
has to be disassembled, the Airmix™ and/or fan can now be removed.
Unblok button
