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Behaviour after power recovery
Maintenance and cleaning
11 Behaviour after power recovery
When the operating voltage is switched on (recovery
of mains voltage), the actuator performs a self-test.
The LED will flash if an error is detected during this
test (see sec. “9 Device LED feedback messages”
on page 52). This is repeated continuously and the
device does not perform its function.
If the test is completed without errors, the actuator
transmits a wireless telegram containing its status
information. To prevent all actuators from transmitting
at the same time when power is recovered (after a
mains power failure or a disconnection, for example),
there is a random delay before the actuator transmits.
During this time, the device LED flashes (as in teach-in
mode). If the delay is very short, this flashing may be
almost imperceptible.
12 Maintenance and cleaning
The product does not require any maintenance.
Enlist the help of an expert to carry out any
repairs.
The device is provided with an internal fuse
protection! The fuses protect the device relays
against excessive current load. If the device is
overloaded and the fuse blows, it can be
replaced by an expert.
The mains voltage must be disconnected
before the device is removed (trip the miniature
circuit-breaker). Only qualified electricians (to
VDE 0100) are permitted to carry out work on
the 230 V mains.
Replacement fuses must always be of the
same type (round fuse 5 A slow-blowing).
Disconnect the device from the power supply
system before commencing cleaning.