ABUS accepts no liability for modifications or changes which were not approved or agreed upon.

The Declaration of Conformity or Declaration of Incorporation issued by ABUS becomes invalid if independent reconstruction or modifications to the crane are performed.

Observe at least these points when making extensive changes to the crane:

─     The crane must be able to be switched off by a mains switch or otherwise be isolated from the mains supply at any time.

─     The unit must be connected to a protective conductor according to the local and national regulations, the user must be protected from the voltage and the motors protected from overloading.

─     An emergency stop device must be available at all times.

─     If the hoist motors or travel motors are controlled via frequency converter by a third party, the frequency converter manufacturer's specifications for installation and adjustment must be observed.

To keep voltage peaks from damaging the windings of the hoist motor or travel motor, a general mains filter must be used if the frequency converter is used by a third party.

ABUS recommends using the ABULiner control system, since the frequency converter is optimally matched for the motors used.