50
Maintenance and cleaning
• From inside with the handwheel:
In idle status, the door lock drive is disengaged,
i.e. mechanically separate from the key. By turning the handwheel of the door lock
drive, the lock can be locked or unlocked and the door can also be opened. The door
lock drive must be in idle status (motor not moving).
• From outside with a key:
In this case, a lock cylinder with emergency and hazard
functionality (double cylinder) is required, otherwise a key inserted from inside will
block any actuation of the lock cylinder. The lock can (if a lock cylinder with emer-
gency and hazard functionality is used) be locked or unlocked from outside or the
door can be opened with a key. The door lock drive must be in idle status (motor not
moving) in this case.
Do not tighten the screws that fasten the door lock drive to the base too tight,
since it might jam the drive and make opening from outside difficult.
8
Maintenance and cleaning
This product does not require you to carry out any maintenance other than replacing the
battery when necessary. Enlist the help of an expert to carry out any maintenance or
repairs. Clean the product using a soft, lint-free cloth that is clean and dry.
You may dampen the cloth a little with lukewarm water in order to remove more stub-
born marks. Do not use any detergents containing solvents, as they could corrode the
plastic housing and label.
Check that your product is safe from a technical point of view (that the housing
is not damaged, for example) on a regular basis. If you have reason to believe
that it is no longer safe to operate the device, put it out of service. Remove the
battery pack to safeguard the device against unintentional operation.
Hazardous operation is no longer possible in certain circumstances, if
• the devices shows visible damage
• the device no longer functions
• after longer period of storage under unfavourable conditions
• after severe transport conditions.
If not used for any length of time (e.g. when in storage), remove the batteries/
rechargeable batteries to avoid damages caused by leaking, etc.
9
General information about radio operation
Radio transmission is performed on a non-exclusive transmission path, which means
that there is a possibility of interference occurring.
Interference can also be caused by switching operations, electrical motors or defective
electrical devices.
