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DRC transmitters and receivers meet the requirements of the standards and
regulations listed in the EC conformity declaration. The specified EC conformity
declaration is an integral part of the relevant operating instructions.
Transmitters and receivers of the DRC range can be operated without any
registration or operating fee. The benefits that this provides for the user are also
utilised by some other manufacturers of devices for communications and telemetry
applications. The consequence of this is that the relevant approved frequency
ranges may be used by many transmitters at the same time, depending on the
time and location.
The transmission method used by Demag is designed for the most robust and
interference-resistant radio transmission between the transmitters and receivers
of the DRC range.
The state-of-the-art transmission method is provided with technical features (e.g.
frequency hopping) which are intended to ensure a minimum of conflicts for radio
operation together with other transmitter and receiver devices which use the same
frequency range.
Despite all of the technical precautions taken by Demag, it cannot be entirely ex-
cluded that the transmission characteristics of other radio systems are impaired,
in particular devices supplied by other manufacturers that use the same frequency
range, or that the transmission characteristics of the system supplied by Demag
are negatively affected. In such cases, interference or radio connection interrup-
tions may occur, which disrupt the communication and function of a system sup-
plied by Demag or other manufacturers. Such impairment or interference does not
constitute a defect on the part of DRC transmitters and receivers. Demag will only
accept liability for wilful or grossly negligent behaviour on its part.
The number of transmitters that operate without any interference in a given area
depends on the relevant radio solution design of all systems and the selectivity of
each individual system.
If this limit is exceeded continuously or for certain periods, additional technical
measures may be necessary in order to ensure simultaneous and interference-
free operation of the radio systems. Whether and to which extent such measures
are required can only be determined by means of suitable measurements on site
or when the system is put into operation. Demag is not responsible for such addi-
tional technical measures.
Radio remote control systems of the DRC range are exclusively intended for
single-transmitter operation; i.e. there is always a clear assignment between a
specific transmitter and the corresponding receiver.
The DRC-10 hand-held transmitter may only be operated when in perfect working
order by trained personnel in accordance with the relevant safety and accident
prevention regulations. This also includes compliance with operating and mainte-
nance conditions specified in the operating instructions.
In Germany, the owner of a crane installation with radio control system is
responsible for compliance with accident prevention regulations BGV D6.
Hand-held radio transmitters that are ready for operation must not be left unat-
tended. They must be protected against unauthorized use.
For appropriate use, the information in the operating instructions for the receiver
used (DRC-DR/DRC-MP) and the machine/crane installation to be controlled must
be complied with in addition to the information contained in these operating in-
structions (see accompanying documents, page 3).
Serious personal injury or damage to property may occur in the event of:
•
unauthorized removal of covers,
•
inappropriate use of the product/system,
•
incorrect
operation,
•
insufficient
maintenance,
•
working on live parts.
