16.4 Unable to unscrew the thumb turn of an AirKey cylinder
Proceed as follows if you are no longer able to unscrew the thumb turn of an AirKey
cylinder:
> Ensure you use the assembly tool for the AirKey cylinder when removing the thumb
turn.
> AirKey cylinders with European profiles are equipped with a service bore at the front
of the electronics module which can be used to secure the thumb turn sleeve using a
matching metal pin. We recommend you use assembly tool set 2.
Procedure:
> Insert the metal pin from assembly tool set 2 into the front service bore of your
European profile cylinder.
> In this process, turn the thumb turn until you are able to insert the metal pin
considerably deeper into the service bore. Now hold the metal pin in this position and
disassemble the thumb turn as usual using the assembly tool.
> Once again remove the metal pin after having removed the thumb turn.
> If you do not have AirKey cylinder with European profile or the AirKey cylinder is
fitted in an escutcheon or a rosette with plug pulling protection, hold an authorised
medium to the reader unit so the cylinder engages. Attach the assembly tool to the
cylinder within the release duration (while the cylinder is engaged). The cylinder then
no longer disengages and the thumb turn can be unscrewed more easily.
16.5 Locking component indicates "Hardware error"
If the locking component indicates a hardware error (refer to Locking components signals), it
is possible that the thumb turn / reader unit is not connected to the associated electronics
module / control unit.
Check the contacts, connectors, and connections as per the assembly manual.
16.5.1 AirKey cylinders
> Ensure the seal has been positioned correctly on the cylinder axis and once again
attach the thumb turn to the cylinder by turning it clockwise until you feel a resis-
tance.
> Remove the assembly tool.
> Subsequently turn the thumb turn anti-clockwise until you notice it engages.
> Ensure the thumb turn and electronics module have engaged correctly.
16.5.2 AirKey wall readers
> Ensure the reader unit and the control unit of the AirKey wall reader have been
connected correctly. If applicable, check the cabling and the plug connections.
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